Table of Content

25 March 2015, Volume 48 Issue 3

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Generation Technology

Optimization of Cooling Water Circulation System Modification and Operation for Ultra-Supercritical Steam Turbine Units

WANG Fei, LIU Xiaohong, WAN Zhonghai, YAN Tao, WU Yanghui, LU Jing

2015, 48(3):  1-5.  DOI: 10.11930.2015.3.1

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Aiming at the existing issues such as the limited adjusting margin, high house service rate and poor economic performances of the circulating water system of a power plant, the modification on the circulating water system is carried out and the testing studies on the micro increase output, the cooling water flow rate and power consumption of the circulating pump under different working conditions and the variable conditions of the condenser are also conducted. Through the studies, the economic operation mode of the circulating water system is obtained, which can ensure that the steam turbine operates at or close to the optimal vacuum.

Causes and Solutions of Water Leaking into the Lubricating Oil System of Feedwater Pump Turbine of 350-MW Supercritical Units

LIU Junfeng

2015, 48(3):  6-8.  DOI: 10.11930.2015.3.6

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In this paper, the characteristics of the domestically-made feedwater pump with the imported technology and its driving turbine are introduced for the 350-MW unit. Taking the Unit 1 of Xinjiang Alar Shengyuan Power Plant as a case, the long-term existing problems of water leaking into the lubricating oil system of the feedwater pump turbine and oily emulsion are analyzed. The analysis concludes that it is the instable gland steam pressure that causes water to leak into the lubricating oil system. Through the modification of the steam supply mode of the shaft seal system for the feedwater pump turbine, the problems are solved effectively.

Technical Analysis on Auxiliary Power Ratio Reduction in Coal-Fired Power Plants

ZHAI De-shuang

2015, 48(3):  9-12.  DOI: 10.11930.2015.3.9

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Reducing the auxiliary power consumption rate of thermal power plants is an important part of energy conservation and emission reduction, and it is also an effective way to improve the economic efficiencies. Taking account of the current situation of coal-fired power plants and the coal market, as well as the energy conservation requirements, the analysis on the practical operation of various auxiliary equipments and systems is conducted to figure out the factors affecting the auxiliary power consumption and the common deficiencies, and exploit the potential of energy saving. Then, the optimal operation adjustment measures are proposed to reduce the auxiliary power consumption rate, with the related strategies on equipment maintenanceand technology improvement being put forward.

Study and Application of Catalytic Citric Acid Cleaning of Superheater Tubes

ZHUANG Wenjun, LONG Guojun, GAN Chaoqi, CAO Jianjun, CAO Jieyu, ZHANG Guangwen,ZHANG Qiang, DENG Yuqiang, YAO Jiantao

2015, 48(3):  13-16.  DOI: 10.11930.2015.3.13

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With the commissioning of large-capacity and high-parameter power generating units, the superheater tube failure due to the iron oxide deposits falling off has become one of the main causes affecting the safe operation of the power generating unit. Therefore, the study on the technology of chemical cleaning using catalytic citric acid cleaning medium for superheater tube scale is conducted and the study results are successfully applied to the superheater of a 600-MW unit. The application shows that this technology can effectively remove the oxide layer on the superheater tubes without causing significant exfoliation of the oxide layer. All the average corrosion rates of different materials in the cleaning process meet the specified values in the chemical cleaning guide for thermal power plant boilers (DL/T 794-2012). During the unit startup and regular operation after the chemical cleaning, the quality of water and steam is good and the superheater wall temperature excursion is normal, realizing the goal of chemical cleaning.

Optimal Analysis on Heat Supply of Combined Heat and Power Direct Air-Cooling Units

WANG Jinquan, CAI Xinchun, ZHANG Guosheng

2015, 48(3):  17-20.  DOI: 10.11930.2015.3.17

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In this paper, through the analysis on the existing problems of heat extraction of direct air-cooling combined heat and power units and water supply and return temperatures of the heat-supply network, a combined extraction and exhaust steam heating system is proposed and the economic comparison between the proposed and the original systems is performed based on the calculation of overall energy consumption. The result exhibits that in the combined extraction and exhaust steam heating system, the coal consumption is decreased by 26 g/kWh, the generator power is increased by 20.36 MW, and 700 thousand m2 more of heating area is increased, suggesting great energy saving potentials.

Power System

Study on Urban Saturated Power Load Forecasting based on Rolling Multi-dimension Method

ZHAO Huiru, ZHOU Jia, LI Nana, HAN Xinyang, HUO Huijuan, XUE Wanlei

2015, 48(3):  21-26.  DOI: 10.11930.2015.3.21

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The study of saturated power load has important significance on long-term planning of urban power grid and coordinated development between economy society and power grid. The economic and social development indices for urban saturated power load forecasting are firstly selected with consideration of impacts of economic development, industry structure, urban development level and people’s living standards. The Logistic model of economic and social development indices forecasting is introduced. The proposed urban saturated power load forecasting model based on rolling multi-dimensions method is then analyzed. Finally, the economic and social development indices of Beijing are forecasted, and the saturated power load is analyzed by employing the proposed model. The testing result shows effectiveness and practical of the proposed method.

Research on Online Monitoring Method of Aeolian Vibration on Transmission Lines Based on FBG

ZHAO Long,, HUANG Xinbo, ZHU Yongcan

2015, 48(3):  27-31.  DOI: 10.11930.2015.3.27

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The conductor and fittings could be damaged because of aeolian vibration of overhead transmission lines. The existing aeolian vibration monitoring devices use mutual inductor and lithium battery as power source, which has short lifespan and also are susceptible to electromagnetic interference and lightning surge current. An aeolian vibration monitoring system based on fiber bragg grating(FBG) is presented. FBG interrogator is used as sensor to detect reflected light wavelength variation during grounding wire vibration. The optical signal is sent through OPGW/OPPC to FBG demodulator inside substation to calculate grounding wires parameters including strain, vibration amplitude and frequency. The proposed online monitoring system does not require onsite power supply, has high resistance to electromagnetic interference and high measurement accuracy, which in turn improves system stability and reliability.

The Analysis of Explosion airflow Arc-quenching performance and application result

YAO Lina, MA Ping, YAN Peng

2015, 48(3):  32-38.  DOI: 10.11930.2015.3.32

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In order to study the extinguishing characteristics of gas blast arc-quenching lightning protection gap, Through the explosion airflow power frequency arc extinguishing test of the lightning protection gap, concluded that the arcing gap lightning protection of stream power frequency arc in the 4 ms time be strong airflow blows out, the air flow to maintain time is more than 6 ms. At the same time establish a chain arc model and Mayr arc model of arc respectively research the air pressure and the energy lost characteristics of explosion airflow arc extinguishing lightning protection gap.And using mechanics software ANSYS14.0 to simulation analysis arc energy under the disturbance of strong airflow. The results of the analysis show that energy of the arc is reduced rapidly and the electric arc is extinguished in a very short period of time under the effect of airflow. And arc extinguishing data are obtained by experiment, arcing time is 0.4 ms, the airflow is maintained longer than 6 ms. In actual operation, it can lower 97% lightning accident rate and arcing effect is obvious.

Research on QoS Support Technology of Wireless Transmission Networks for Transmission Line Monitoring

SHI Xin, ZHU Yongli

2015, 48(3):  39-43.  DOI: 10.11930.2015.3.39

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Transmission line plays an important role in power transmission, which is directly related

level of 1m above the ground and the horizontal distance of the six-phase transmission line Calculation of Power Frequency Electric Field Intensity of UHV Six-phase Transmission Lines

WANG Yan, WANG Shuhuan, JIAO Yanjun

2015, 48(3):  44-49.  DOI: 10.11930.2015.3.44

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To study the characteristics of the surface and space electric field for UHV six-phase transmission lines, the typical tower size is designed and the bundle conductor type is selected for the six-phase UHV transmission system by referring to the tower structure of double-circuit transmission lines. The maximum electric field intensity on the six-phase conductor surface and the maximum space electric field intensity at the level 1 m above the ground under the transmission line are calculated with consideration of the interaction between sub-bundle conductors, and the calculated result is compared with that of double-circuit transmission lines of corresponding voltage levels, which shows that both the conductor surface electric field intensity and the space electric field of six-phase transmission lines are better than those of double-circuit transmission lines. It can thus be concluded that the UHV six-phase transmission lines have better environmental performance.

On-Line Identification of Coherent Generators Based on PMU and Improved Support Vector Machine

TIAN Yu, LIANG Haifeng, KANG Yi, GAO Yajing, LIU Kequan, LI Xiaohu, WANG Geng

2015, 48(3):  50-55.  DOI: 10.11930.2015.3.50

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When transient stability problems occur in the modern power systems, it is necessary to identify coherent generators quickly and accurately, which can provide the basis for the controlled islanding strategy in the next step. On account of dynamic trajectory information of generators measured by PMU tends to be high dimensional and nonlinear, a new method for online identification of coherent generators is proposed. Firstly, the dynamic rotor angle trajectory information can be measured by PMU. Then the information measured by PMU should be normalized to generate the standardized and high-dimensional data. After that, the optimal value of Gauss radial basis kernel function parameter g and penalty coefficient C can be determined by using LOO-CV, and the accurate classification model can be generated. Finally, this accurate classification model can be used to classify the unknown samples and get the final classification results. The simulation results show that the new method can overcome the shortcomings of the traditional methods and identify the coherent generators online both quickly and accurately, meeting the requirements of on-line analysis and real-time computing of transient stability in modern power system.

bstacle Avoidance For UAV Power Line Inspection Based on Cylindrical Space and Support Vector Machine

ZHANG Jian, WANG Shiyong, CHEN Xi, XU Huadong, YU Dengke, YANG Zhong

2015, 48(3):  56-60.  DOI: 10.11930.2015.3.56

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To deal with the obstacle avoidance problems in power line inspection with Unmanned Aerial Vehicle(UAV), a novel obstacle avoidance approach is proposed for UAV line inspection based on cylindrical space and support vector machine algorithm. Firstly, the cylindrical space model is established according to the obstacles in the flight zone. Secondly, the support vector machine is introduced to achieve the obstacle avoidance with UAV in a new perspective way. Finally, the novel method is applied in the UAV and tested by simulation. The simulation results illustrate that the proposed method can ensure obstacle avoidance in UAV power line inspection with safety and reliability.

Research on Adaptive UFLS Strategy Based on Power Flow Tracing Algorithm

WU Yaodong, LIANG Haifeng, GAO Yajing, KANG Yi, LIU Kequan, LI Xiaohu, WANG Geng

2015, 48(3):  61-66.  DOI: 10.11930.2015.3.61

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Under frequency load shedding(UFLS) is one of the valid implementations to avoid system frequency collapses. It significantly ensures the stability of the power system by means of shedding excessive loads in certain places. Considering the regulating effect of voltage on the load, an improved method for the calculation of power imbalance is proposed. It calculates the total amount of load shedding for different disturbance online. Taking advantage of the sparsity of adjacency matrix, a new power flow tracing algorithm is proposed by combining the adjacency matrix with the principle of proportional distribution, which can improve the computing efficiency and can be applied in UFLS to determine the location and the corresponding quantity of the load shedding online. The simulation results show that the new adaptive UFLS method is more reliable and can both improve the frequency and the voltage recovery performance with less amount of load shedding.

Harmonic Suppression Method for Micro-grid Based on Immune Particle Swarm Optimization Algorithm

WANG Jing, ZHANG Ying, CHEN Junyu, GONG Yufeng, WANG Zongli

2015, 48(3):  67-74.  DOI: 10.11930.2015.3.67

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The application of a large number of power electronic devices and a variety of nonlinear load switching in micro-grid make harmonic problems complicated. In view of the problem that the difficultly in filter parameters tuning affects the effectiveness of micro-grid harmonic suppression, a method is proposed in this paper to optimize the micro-grid filter parameters by using the immune particle swarm optimization algorithm. Firstly, a droop control-based micro-grid model is established, which includes the power control module, voltage and current control module and droop control module, and an objective function is established based on micro-grid performance and filter parameters design features. Secondly, the immune particle swarm optimization algorithm is introduced to avoid the PSO getting into local optimization and to solve the premature convergence problem. The immune particle swarm algorithm, by introducing the concept of antibody concentration in immune algorithm into particle swarm optimization algorithm and replacing some of the individuals, can keep the diversity of population and jump out of local optimum Micro-grid filter parameter optimization is a multi-constraint and nonlinear optimization problem, This method can be used to obtain the appropriate filter parameters that meet the conditions. A new method is proposed to use the immune particle swarm optimization algorithm to call the micro-grid simulation system for optimizing parameters. In the end, the harmonic suppression method based on immune particle swarm optimization algorithm is proved to be feasible through MATLAB simulation of micro-grid.

Study on Safety Performance of Fixed Series Compensation Capacitor Bank

CHEN Na, ZHOU Zhicheng, MA Yong, WU Hao, XIE Tianxi

2015, 48(3):  75-79.  DOI: 10.11930.2015.3.75

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Capacitor explosion accidents happen at times due to the poor performance, improper type selection and scheme design of the capacitor bank in 500-kV transmission line FSC devices, which brings about huge losses such as equipment damage, plants burnout and even large-scale blackouts in the electric power system. The secure operation of capacitor banks will greatly influence the FSC reliability and the secure, reliable and economical operation of the power system. Therefore, it is essential to study the capacitor bank scheme design so as to improve FSC security. In this paper, the influences of the type selection and design scheme of FSC capacitor banks on FSC security are analyzed and the explosion energy of the capacitor banks with different design schemes is calculated. Finally, the suggestions on FSC optimization are put forward for FSC safety performance improving.

Influence of Ultraviolet Radiation Aging on Hydrophobicity of Silicone Rubber used for Composite Insulator

LI Peng，, MA Bin, LIU Daohui, ZHU Yong, SONG Bo

2015, 48(3):  80-83.  DOI: 10.11930.2015.3.80

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The excellent performance of composite insulators originates in the hydrophobicity and hydrophobic transfer property of silicone rubber. This paper emphasized the effects of UV aging on hydrophobicity and also the influences of surface contamination on hydrophobic migration property. The results show that Shenma's silicone rubber kept good hydrophobicity after 2000-hour UV radiation, with a static contact angel of 102.3°. And the hydrophobic migration property reached HC2 level. The hydrophobicity of contaminated layer on the surface can migrate to HC2 to HC3 level during a short time. This paper also analyzed the UV aging mechanism and hydrophobic migration mechanism of silicone rubber.

The Anhui Annual Maximum Load Forecasting Method Research Based on Economic and Meteorological Factors

GE Fei, RONG Xiuting, SHI Xuemei, YANG Xin, LI Zhou

2015, 48(3):  84-87.  DOI: 10.11930.2015.3.84

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This paper analyzes the features of the centrally dispatched maximum power load (referred to as“maximum load”) from the characteristics of electricity consumption structure and decomposes the maximum power load into three separate loads: base load, residents’ air conditioning load and non-residents’ air-conditioning load. Upon the decomposition, econometric methods are applied to analyze the economic and meteorological factors of each load. The paper finally establishes the maximum load forecasting model including economic and meteorological factors. The model explains the fundamental factors influencing the maximum load; the forecasting error is controlled within 3%, which meets the requirement of load forecasting practice and has certain applied values.

Analysis of Propagation Characteristics of Transient Traveling Waves in HVDC Grounding Electrode Line Faults

ZHANG Yining, WANG Caizhi, CHEN Ping, LI Jing

2015, 48(3):  88-93.  DOI: 10.11930.2015.3.88

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HVDC grounding electrode line faults tend to happen due to the specificity and complexity of line laying. In this paper, the mechanism of the traveling wave initiated by the grounding fault is introduced. Then the detailed analysis on the traveling wave modulus and the transmission characteristics in the DC neutral bus and the grounding electrode is conducted in terms of single line to ground fault, line to line fault and double line to ground fault, respectively. Based on the PSCAD/EMTDC electromagnetic transient simulation platform, the HVDC system model is established, in which the grounding fault in the single-pole grounding metal line mode is simulated and verified. The simulation results show the validity of the analysis. The analysis on the grounding fault and the propagation characteristics of the transient traveling wave can provide a theoretical foundation for grounding fault location by adopting transient traveling wave.

Study on Connection Performance of D-Shaped Composite Tube

XING Haijun, YUE Ping, WANG Cancan, JIANG Wendong, WANG Jiajia, ZHANG Yingjie

2015, 48(3):  94-98.  DOI: 10.11930.2015.3.94

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The D-shaped composite tube which is mechanically connected by steel bolts is applied to the lattice composite tower. However, there is still lack of enough studies on the impacts of machining hole and bolt pre-tightening force on the rod bearing capacity and the bearing properties are still unclear in the current field. In order to understand the connection performance of D-shaped composite tube, the node test on the inter-node model of the tower with D-shaped composite tube is carried out, which concludes that the damage type on top of the connection hole of the composite rod is mainly slipping off and shearing. Then, the analysis on the impact of bolt pre-tightening force on the connection performance of D-shaped composite tube is conducted with the finite element model. The analysis result indicates that the value of pre-tightening torque of the shear bolts for D-shaped composite tower should be 220 N?m.

Study on Structural Characteristics of Transmission Tower with the Tower Head of D-Shaped Composite Material

CHEN Cheng, PAN Feng, WANG Cancan, WANG Cong, ZHANG Tong, HUANG Jingwen

2015, 48(3):  99-102.  DOI: 10.11930.2015.3.99

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By adopting composite materials as the main structure of transmission towers, both the floor space and electrical distance of transmission lines are reduced effectively, which can realize transmission corridor compression. Other than the angle iron, composite materials can adopt D-shaped cross section which increases the sectional resistance moment. In this paper, the finite element analysis on the section of the composite materials of different types is conducted to calculate the sectional characteristics. Based on a typical case of 110-kV transmission tower which is equipped with a tower head made of composite material, a precise finite element model is established and the vibration characteristics of the structure are obtained and compared to those of traditional angle steel towers with cause analysis being carried out. The distribution characteristics of RMS displacement, mean displacement and RMS acceleration are studied with the calculation of time domain based wind vibration coefficient. Meanwhile, the wind vibration coefficient at different transmission tower heights are obtained and compared with the standard values set by China. The result of this paper can be used as reference for wind resistance design of composite towers.

New Energy

Security Analysis of Static Voltage in Wind Farm Based on Safe Operation Range

GE Jiangbei, ZHOU Ming, LI Gengyin, DING Meng

2015, 48(3):  103-108.  DOI: 10.11930.2015.3.103

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Static voltage deviation of wind farm is analysed based on static voltage security. Static safe operation range of wind farmer is proposed in this paper by using linear transformation of power output based on voltage constraints. The safe distance between wind farm operating point and security boundary is defined and voltage forewarning is investigated under steady-state operating conditions. A reactive power optimization method is proposed to improve wind farm static voltage security. The simulation results with DIgSILENT/ Power Factory software show that the proposed static safe operation range has good applicability for wind farms. The proposed method provides methodological support for the safe and stable operation of wind farms, and can be used to realize static voltage forewarning and reactive power optimization.

Analysis of Fault Current Characteristics of Tie-Line at PMSG Wind-farm’s PCC and Its Influences on Differential Protection

MENG Long, CHAO Qin, WANG Yibo

2015, 48(3):  109-115.  DOI: 10.11930.2015.3.109

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Based on the actual parameters of a wind farm which is integrated with Xinjiang grid. The PMSG model, which is based on d-q decomposition and hysteresis tracking method, and the wind farm equivalent model, which is based on the account wake effect equivalent velocity law, are built on the platform of PSCAD/EMTDC. A simulation is conducted on the characteristics of the short-circuit at the exit of the wind farm and its impacts on the differential protection of transmission line current integrated with the 110 kV grid under variations of wind speed, control strategy and fault type. The simulation results show that when a short circuit fault occurs outside the wind farm, the virtual value of short-circuit current provided by the wind farm is smaller than that of thermal power with same capacity but has strong volatility and has a significant influences on the protective devices at the PCC(Point of Common Coupling) of wind farms. Some improvement measures are proposed in view of the problems that may arise, which can provide a theoretical basis for large-scale integration of wind powers.

Research on System Modeling and Grid Connection Characteristics of Large-scale PV-ES Hybrid Power System

GAN Siqi, KONG Lingguo, CAI Guowei, HU Xiangnan

2015, 48(3):  116-121.  DOI: 10.11930.2015.3.116

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This paper presents a dynamic model and a coordinated control strategy for photo voltaic and energy storage hybrid power system. The proposed control strategy is able to effectively improve transient voltage stability and suppress power fluctuation of large scale grid-connected photo voltaic system. The maximum power control algorithm based on maximum power change rate is adopted in photo voltaic system along with decoupled power control method, while the power control reference is obtained from the error between real values and settings of voltage and frequency in energy storage system. The system synchronization is realized by decoupling control of power and current loop. The simulation result shows the validity of proposed model and control strategy, which consequently improve system low voltage ride-through ability and power grid stability.

Application of SRTM Data in Wind Resource Assessment of Mountainous wind farms

ZHANG Yu, ZHANG Hua, OU Haiqing

2015, 48(3):  122-126.  DOI: 10.11930.2015.3.122

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In wind resource assessment, high resolution terrain data is usually difficult to be obtained, thus finding the alternative data is particularly important. In view of the fact that it is very difficult to conduct topographic mapping and ground investigation for wind resource assessment, based on the case of a DGS wind farm in mountains with high altitude and complicated terrain in Yunnan province, it is tried to use SRTM data of 90-meter resolution for acquiring the electronic topographic map, which is needed in Meteodyn WT model. A comparison is made of the wind resource assessment results based respectively on the electronic topographic map and the surveyed 1∶10 000 gauss map, which can be concluded that the SRTM data can be used for wind resource assessment in mountains with high altitude and complicated terrain.

Analysis of Uncertainty Management Technology for Lager-scale Wind Power Integration in Generation Scheduling

DING Qia, LI Lili, WANG Yang, TU Mengfu, DAI Zemei

2015, 48(3):  127-132.  DOI: 10.11930.2015.3.127

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As main content of electric power dispatching, generation scheduling plays an important role in power grid for security and economic operation. The increasing integration of wind energy brings new challenges to the generation scheduling due to its randomness. Based on the descriptive manner of wind power, this paper analysis and review the characteristics of three different methods: reserve requirements, stochastic programming and robust optimization. Furthermore, some aspects that need to be urgently solved are proposed. This paper hopes to provide reference to the study of uncertainly management technology for large-scale wind power integration in generation scheduling.

The Application of Reactive Power and Voltage Coordinated Control Based on Multi-agent in Grid Integrated with Wind Farms

XU Peng, LIU Wenying, XU Yuanyuan, ZHANG Jianhua

2015, 48(3):  133-138.  DOI: 10.11930.2015.3.133

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This paper proposes a novel reactive power and voltage coordinated control model based on Multi-agent. In this model, an improved power network partitioning method is presented to form region agent and local agent by using sensitivity method and distance vector algorithm, which compromise the physical distance and electrical distance. It should be noticed that the improved method has self-learning ability for the reason that real-time power data is used in the partitioning procedure. It is strong coupling of reactive power and voltage in the same partition but weak in different ones. The proposed model can optimize control strategy in the global scope, which break through the limitations of partial solution in traditional method. Finally, take some district power grid in GANSU province for instance to prove the feasibility and effectiveness of the new method and control model.

Mechanical Study on Influence of Large Scale Wind Power on Static Voltage Stability

XU Xiaoyan, MA Shuo, HUANG Yuehui, CHANG Xiqiang

2015, 48(3):  139-143.  DOI: 10.11930.2015.3.139

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Viewed from static voltage stability, by using PV curve method, and index of active power margin and voltage-active power sensitivity, this paper gives mechanism analysis of influence of wind power on grid voltage stability. Also, affection of reactive power from wind farm and local grid strength on the former index is analyzed, result shows that increasing reactive power support and strengthening power grid could improve grid static voltage satiability effectively. A wind power congregation system in China area is simulated to verify the theory, at last, some measurements to improve voltage stability are proposed.

Intermittent Micro Source Control in a Networking State

YU Hong, LI Lingli, LUO Jiping, XIANG Min

2015, 48(3):  144-149.  DOI: 10.11930.2015.3.144

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For intermittent new energy, in the state of networking the traditional method of control is generally used to set the power output but with a significant increase of Intermittent micro source, if it continues to use the traditional method of controlling the grid will substantially reduce the inertia, the ability to reduce the impact of inertia means that the system becomes stability is weak, the system is reduced. In view of this situation we propose improved droop control for networkedly Intermitten micro-source, taking active micro-power output capability into account, and the actual operation more characters and give a detailed inverter and battery state control block in networking. Intermittent new energy can actively participate in the voltage and frequency regulation system to improve inertial systems, and enhance stability. The simulation software has been validated its feasibility.

Energy Conservation and Environmental Protection

Study on Contribution of Power Industry for Regional Energy Conservation and Carbon Intensity Reduction Goal

TIAN Zhonghua, YANG Zeliang, CAI Ruixian

2015, 48(3):  150-155.  DOI: 10.11930.2015.3.150

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Basing on the rule of regional energy statistic and carbon emission accounting, with a combination of former study, a model of CO2 emission accounting was built, with energy consumption and CO2 emission per unit final electricity consumption has been put forward to analyze the power industry’s energy saving and CO2 emission reduction as well as its contribution to regional energy saving and CO2 emissionreduction.As the verification of the effectiveness of the method proposes, a case study of Guangdong province is presented based the data between 2005 and 2012. The conclusion clarified some particial judgement, which will be instructional and helpful to the afterward countermeasures of energy saving and CO2 emission intensity policies making.

Comparative Study on Flue Gas Emission Rules of Thermal Power Plants in EU and China

DENG Weini

2015, 48(3):  156-160.  DOI: 10.11930.2015.3.156

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DIRECTIVE 2010/75/EU is well recognized worldwide. In this article, the comparative study between DIRECTIVE 2010/75/EU and Emission Standard of Air Pollutants for Thermal Power Plants(GB13223-2011) are conducted from the aspects of appliable objects, unit capacity, fuel types, standard condition and oxygen content benchmark, pollutant items, emission limits and minimum desulfurization efficiency. The study finds that SO2, NOx, dust and CO are included in the EU pollutants control items, whereas mercury emission control is not mentioned; the classification of fuel and unit types in DIRECTIVE 2010/75/EU is more specific than that in GB13223-2011; the minimum desulfurization efficiency is mandatory in EU, but not in China; in regarding the common pollutants control items, the emission limits are comparable between EU and China, and some limits are even more stringent in China.