| 引用本文: | 谢惠藩,梅勇,周剑,黄河,李鹏,刘洪涛.金中直流送端孤岛运行研究与实践[J].电力自动化设备,2018,(11): |
| XIE Huifang,MEI Yong,ZHOU Jian,HUANG He,LI Peng,LIU Hongtao.Study and practice of islanding operation of Jinzhong HVDC sending end system[J].Electric Power Automation Equipment,2018,(11): |
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| 摘要: |
| 为了保障黄太双线同停检修期间滇西北地区电网的稳定性及减少梨园和阿海电厂的弃水量，开展金中直流送端孤岛运行方式研究与实践：研究金中直流孤岛运行的可行性，校验送端孤岛运行的稳定性，提出孤岛运行原则和要求，分析直流孤岛调试和实际运行情况，并提出孤岛运行异常事故处理建议。实际运行表明：金中直流孤岛运行期间孤岛系统平稳，各种运行工况下频率和电压均满足规程要求，现场一、二次设备未发现损坏和异常现象。金中直流成功实施孤岛运行，提高了滇西北地区电网的稳定性和金中直流的输电能力，孤岛运行15 d共减少送端电厂弃水量约6.9×108 kW·h，社会效益和经济效益显著。 |
| 关键词: 高压直流输电 孤岛运行 频率限制控制 过电压控制 |
| DOI：10.16081/j.issn.1006-6047.2018.11.031 |
| 分类号:TM721.1 |
| 基金项目: |
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| Study and practice of islanding operation of Jinzhong HVDC sending end system |
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XIE Huifang, MEI Yong, ZHOU Jian, HUANG He, LI Peng, LIU Hongtao
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Power Dispatch and Control Center of China Southern Power Grid, Guangzhou 510623, China
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| Abstract: |
| In order to guarantee the stability of northwest region of Yunnan Power Grid and reduce the surplus water quantity of Liyuan and Ahai power plants, the islanding operation mode of Jinzhong HVDC sending end system is studied during the maintenance period of Huangtai double lines. The feasibility of islanding operation of Jinzhong HVDC is studied, the islanding operation stability of sending end system is verified, the principles and requirements of islanding operation are proposed, the debugging and actual operation of the DC islands are analyzed, and the suggestions for abnormal accident treatment of islanding operation are proposed. Practical operation shows that the island system is stable under various operating conditions with frequency and voltage both meeting the specification requirements, and the primary and secondary equipments both behave normally. The successful islanding operation of Jinzhong HVDC improves the stability of northwest region of Yunnan Power Grid and the transmission capacity of Jinzhong HVDC. The surplus water quantity of power plants at the sending end reduces by about 6.9×108 kW?h in 15 days of islanding operation, and the social and economic benefits are remarkble. |
| Key words: HVDC power transmission islanding operation frequency limit control overvoltage control |
