孤岛电网频率电压耦合机理及控制措施

doi:10.11930/j.issn.1004-9649.201706147

中国电力 ›› 2018, Vol. 51 ›› Issue (11): 53-60.DOI: 10.11930/j.issn.1004-9649.201706147

孤岛电网频率电压耦合机理及控制措施

吕思卓¹, 郑超¹, 彭利², 宋新甫³, 高凯⁴, 吕盼³, 唐俊刺⁴

1. 中国电力科学研究院有限公司, 北京 100192;
2. 中核陕西铀浓缩有限公司, 陕西汉中 723312;
3. 国网新疆电力有限公司经济技术研究院, 新疆乌鲁木齐 830016;
4. 国网辽宁省电力有限公司, 辽宁沈阳 110006

收稿日期:2017-06-22 修回日期:2018-06-14 出版日期:2018-11-05 发布日期:2018-11-16
作者简介:吕思卓(1989-),男,通信作者,硕士,工程师,从事电力系统稳定与控制方面的研究,E-mail:lvsizhuo@epri.sgcc.com.cn;郑超(1977-),男,高级工程师(教授级),博士,从事电力系统稳定与控制、交直流系统分析、FACTS、新能源并网技术方面的研究,E-mail:zhengch@epri.sgcc.com.cn
基金资助:
国家电网公司科技项目（XT71-18-022）。

Coupling Mechanism and Control Measures of Dynamic Frequency and Voltage in Isolated Power Grid

LYU Sizhuo¹, ZHENG Chao¹, PENG Li², SONG Xinfu³, GAO Kai⁴, LYU Pan³, TANG Junci⁴

1. China Electric Power Research Institute, Beijing 100192, China;
2. CNNC Shaanxi Uranium Enrichment Co., Ltd., Hanzhong 723312, China;
3. State Grid Xinjiang Economic Research Institute, Urumqi 830016, China;
4. State Grid Liaoning Electric Power Company, Shenyang 110006, China

Received:2017-06-22 Revised:2018-06-14 Online:2018-11-05 Published:2018-11-16
Supported by:
This work is supported by Science and Technology Project of SGCC (No. XT71-18-022).

摘要/Abstract

摘要： 地区电网与主网发生解列故障时，将转为孤岛电网运行状态，由于孤岛电网转动惯量较小，大容量不平衡功率冲击下孤网频率和电压交互作用显著。首先，揭示了孤岛电网频率和电压之间耦合作用的机理，通过构建单机单负荷模型，分析了线路传输有功、负荷频率因子和线路高抗补偿度对孤网频率和电压动态过程的影响。结合西藏电网实际运行情况，从稳定控制措施方面给出了应对孤网频率和电压越限的建议，并通过仿真验证其有效性，研究结论可以为藏中联网工程投运后西藏电网稳定运行提供技术支撑。

关键词: 孤岛电网, 频率, 电压, 耦合机理, 控制措施

Abstract: The regional power grid will change to isolated power grid operation after disconnected with main network. Considering the low inertia of isolated power grid, the interaction between frequency and voltage is significant under the impulse of large capacity unbalanced power. This paper firstly reveals the coupling mechanism of frequency and voltage in isolated power grid. And then, through constructing the equivalent model of single machine and singe load, the paper analyzes the influence of transmission power, load frequency factor and compensation degree on the dynamic process of frequency and voltage. Finally, based on the actual operation of the Tibet power grid, some stability control measures are put forward to address the over-frequency and overvoltage of isolated power grid, and their effectiveness is verified through simulation. The research results can provide a technical basis for the stable operation of the Tibet power grid after the central-Tibet interconnection project is put into operation.

Key words: isolated power grid, frequency, voltage, coupling mechanism, control measures

中图分类号:

TM722

吕思卓, 郑超, 彭利, 宋新甫, 高凯, 吕盼, 唐俊刺. 孤岛电网频率电压耦合机理及控制措施[J]. 中国电力, 2018, 51(11): 53-60.

LYU Sizhuo, ZHENG Chao, PENG Li, SONG Xinfu, GAO Kai, LYU Pan, TANG Junci. Coupling Mechanism and Control Measures of Dynamic Frequency and Voltage in Isolated Power Grid[J]. Electric Power, 2018, 51(11): 53-60.

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https://www.electricpower.com.cn/CN/Y2018/V51/I11/53

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孤岛电网频率电压耦合机理及控制措施

Coupling Mechanism and Control Measures of Dynamic Frequency and Voltage in Isolated Power Grid

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孤岛电网频率电压耦合机理及控制措施

Coupling Mechanism and Control Measures of Dynamic Frequency and Voltage in Isolated Power Grid

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