Influence of Turbine Droop on the Primary Frequency Control Capacity of Steam Turbine Units

doi:10.11930/j.issn.1004-9649.201803125

Abstract

Abstract: The instability of primary frequency modulation of steam turbine units is not rare, and it affects the security of power grid operation seriously. The study on the specific case of East China power grid figures out the root cause of primary frequency control capacity instability of being the large turbine local droop. After analyzing the main factors influencing the turbine local droop, it is concluded that the turbine local droop is closely related to the corresponding power grid frequency deviation. A 600-MW supercritical steam turbine is taken as a case to generate the optimized local droop curve. The results can be used to enhance the capability of the turbine and power grid coordination of steam turbines.

Key words: steam turbine, turbine droop, primary frequency control, flow characteristics, power system

CLC Number:

TM712

ZHANG Bao, GU Zhenghao, YING Guangyao, DING Yangjun, FAN Yinlong. Influence of Turbine Droop on the Primary Frequency Control Capacity of Steam Turbine Units[J]. Electric Power, 2018, 51(7): 78-83.

Add to citation manager EndNote|Ris|BibTeX

URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201803125

https://www.electricpower.com.cn/EN/Y2018/V51/I7/78

References

[1] 张正陵. 中国"十三五"新能源并网消纳形势、对策研究及多情景运行模拟分析[J]. 中国电力, 2018, 51(1):2-9.ZHANG Zhengling. Research on situation and countermeasures of new energy integration in the 13th Five-Year Plan Period and its multi-scenario simulation[J]. Electric Power, 2018, 51(1):2-9.
[2] 高强, 张小聪, 施正钗, 等. ±800 kV宾金直流双极闭锁故障对浙江电网的影响[J]. 电网与清洁能源, 2014, 30(11):47-51.GAO Qiang, ZHANG Xiaocong, SHI Zhengchai, et al. Impact of ±800 kV Yibin-Jinhua DC bipolar block fault on Zhejiang power grid[J]. Power System and Clean Energy, 2014, 30(11):47-51.
[3] 盛德仁, 韩旭, 陈坚红, 等. "能源互联网"下特高压输电对汽轮机组的影响分析[J].中国电机工程学报, 2015, 35(增刊):132-137.SHENG Deren, HAN Xu, CHEN Jianhong, et al. Study of ultra-high voltage transmission's impact on turbo set under internet of energy[J]. Proceedings of the CSEE, 2015, 35(S1):132-137.
[4] 姚峻, 祝建飞, 金峰. 1000 MW机组节能型协调控制系统的设计与应用[J].中国电力, 2010, 43(6):79-84.YAO Jun, ZHU Jianfei, JIN Feng. Design and application of energy-saving coordination control system in 1000 MW unit[J]. Electric Power, 2010, 43(6):79-84.
[5] 张宝, 童小忠, 罗志浩, 等. 凝结水节流调频负荷特性测试与评估[J]. 浙江电力, 2013(2):48-51.ZHANG Bao, TONG Xiaozhong, LUO Zhihao, et al. Test and assessment on load characteristic of frequency modulation by condensate throttling[J]. Zhejiang Electric Power, 2013(2):48-51.
[6] 陈波, 周慎学, 丁宁, 等. 超(超)临界机组高加给水旁路调节方式的一次调频控制技术研究与试验[J]. 中国电力, 2017, 50(8):32-36.CHEN Bo, ZHOU Shenxue, DING Ning, et al. Research and test of the primary frequency control in ultra supercritical units under feed water bypass control of HP heater[J]. Electric Power, 2017, 50(8):32-36.
[7] 费章胜, 卢宏林, 何永君, 等. 特高压直流闭锁后超(超)临界机组大频差控制策略[J]. 中国电力, 2017, 50(8):29-31.FEI Zhangsheng, LU Honglin, HE Yongjun, et al. Primary frequency regulation of large frequency-difference in supercritical/ultra-supercritical units after UHVDC transmission system block fault[J]. Electric Power, 2017, 50(8):29-31.
[8] 宣晓华, 尹峰, 张永军, 等. 特高压受端电网直流闭锁故障下机组一次调频性能分析[J]. 中国电力, 2016, 49(11):140-144.XUAN Xiaohua, YIN Feng, ZHANG Yongjun, et al. Analysis on primary frequency regulation performance of the units under DC blocking fault in UHV receiving end power grid[J]. Electric Power, 2016, 49(11):140-144.
[9] 王一振, 马世英, 王青, 等. 大型火电机组动态频率响应特性[J]. 电网技术, 2013, 37(1):106-111.WANG Yizhen, MA Shiying, WANG Qing, et al. Dynamic frequency response characteristics of large thermal power generation units[J]. Power System Technology, 2013, 37(1):106-111.
[10] 樊印龙, 张宝, 顾正皓, 等. 节流配汽汽轮机组一次调频经济代价分析[J]. 中国电力, 2016, 49(7):86-89.FAN Yinlong, ZHANG Bao, GU Zhenghao, et al. Economic cost analysis on primary frequency regulation of throttling steam turbine unit[J]. Electric Power, 2016, 49(7):86-89.
[11] 张宝, 樊印龙, 顾正皓, 等. 大型汽轮机流量特性试验[J]. 发电设备, 2012, 26(3):73-76.ZHANG Bao, FAN Yinlong, GU Zhenghao, et al. Flow characteristic test for large steam turbines[J]. Power Equipment, 2012, 26(3):73-76.
[12] 李劲柏, 刘复平. 汽轮机阀门流量特性函数优化和对机组安全性经济性的影响[J]. 中国电力, 2008, 41(12):50-53.LI Jinbai, LIU Fuping. Optimization for the flow characteristic function of turbine valves and the influences on safe and economic operation[J]. Electric Power, 2008, 41(12):50-53.
[13] 包劲松, 孙永平. 1000 MW汽轮机滑压优化试验研究及应用[J]. 中国电力, 2012, 45(12):12-15.BAO Jinsong, SUN Yongping. Experimental research & application of sliding pressure optimization for 1000-MW steam turbines[J]. Electric Power, 2012, 45(12):12-15.
[14] 中华人民共和国国家质量监督检查检疫总局. 火力发电机组一次调频试验及性能验收导则:GB/T 30370—2013[S]. 北京:中国标准出版社, 2014.
[15] 中华人民共和国国家质量监督检查检疫总局. 火力发电厂汽轮机数字电液控制系统运行维护与试验技术规程:GB/T 35729—2017[S]. 北京:中国标准出版社, 2017.
[16] 中华人民共和国国家经济贸易委员会.汽轮机调节控制系统试验导则:DL/T 711—1999[S]. 北京:中国电力出版社, 1999.
[17] 伍宇忠, 张曦, 朱亚清. 热工控制系统原因引发机组功率振荡的机理探讨及防控措施[J]. 广东电力, 2013, 26(6):63-68.WU Yuzhong, ZHANG Xi, ZHU Yaqing. Discussion on mechanism of unit power oscillation triggered by thermal control system and precontrol measures[J]. Guangdong Electric Power, 2013, 26(6):63-68.
[18] 张宝, 樊印龙, 顾正皓, 等. 汽轮机调速系统中影响电力系统低频振荡的关键因素[J]. 中国电力, 2017, 50(1):105-110.ZHANG Bao, FAN Yinlong, GU Zhenghao, et al. The Key factor in turbine governor system influencing the low frequency oscillations in power system[J]. Electric Power, 2017, 50(1):105-110.
[19] 张宝, 樊印龙, 顾正皓, 等. 汽轮机组参与电力系统低频振荡的机理与抑制措施[J]. 中国电力, 2016, 49(12):91-95.ZHANG Bao, FAN Yinlong, GU Zhenghao, et al. The mechanism and restraining measures for low frequency oscillations with participating steam turbine units in power plant[J]. Electric Power, 2016, 49(12):91-95.
[20] 张宝, 顾正皓, 樊印龙, 等. 通过试验计算汽轮机的流量特性[J]. 汽轮机技术, 2013, 55(3):215-218.ZHANG Bao, GU Zhenghao, FAN Yinlong, et al. Calculating the steam turbine flow characteristics through testing[J]. Turbine Technology, 2013, 55(3):215-218.