无功功率就地补偿对变压器调档过程的影响分析
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摘要
本文以一起某110kV变电站变压器差流越限告警实例为依据,深入分析了变电站内变压器调档过程中由于系统节点无功功率不足,且该变电站内未安装无功补偿设备,导致变压器差动保护和差动电流增加,并触发差流越限告警,威胁电网的安全稳定运行。文中采用现场记录的数据计算出变压器调档过程中产生的差流大小,并从理论上探析了无功功率对变压器及输电线路的影响,为类似事件的分析提供参考。
Based on an example of transformer differential current over-limit alarm in a 110 kV substation, this paper analyzes in-depth the problem of transformer over-limit alarm caused by insufficient reactive power at system nodes and no reactive power compensation equipment installed in the substation during the shifting process of transformer in the substation. Threatening the safe and stable operation of the power grid. This paper calculates the differential current produced in the course of transformer shifting by using the data recorded on the spot, and analyzes the influence of reactive power compensation on transformers and transmission lines theoretically, which provides a reference for the analysis similar events.
Based on an example of transformer differential current over-limit alarm in a 110 kV substation, this paper analyzes in-depth the problem of transformer over-limit alarm caused by insufficient reactive power at system nodes and no reactive power compensation equipment installed in the substation during the shifting process of transformer in the substation. Threatening the safe and stable operation of the power grid. This paper calculates the differential current produced in the course of transformer shifting by using the data recorded on the spot, and analyzes the influence of reactive power compensation on transformers and transmission lines theoretically, which provides a reference for the analysis similar events.
引文
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[12]任建文,高雯曼,申旭辉,等.统一潮流控制器装置级优化控制策略综述[J].电力电容器与无功补偿2018,39(4):140-146.
[13]黄娟娟,康义,陈凌云.南方电网无功补偿配置原则与标准探讨[J].中国电力,2013,46(3):43-46,58.
[14]胡雨姣.关于新建输变电工程无功补偿容量的初步计算[J].电气技术,2012,13(7):73-74.
[15]洪卫国,彭明生.一典型10k V线路通过无功补偿提高功率因数的方法[J].硅谷,2014(19):149-150.
[2]郑涛,陆格野,黄婷,等.特高压有载调压变压器差动保护自适应算法[J].电工技术学报,2017,32(20):271-280.
[3]黄伟,黄春艳,何奉禄,等.110k V变电站多维度变参数无功配置方法[J].电力电容器与无功补偿,2017,38(2):34-39.
[4]Masato Ishida,Takeshi Nagata,Hiroshi Saihi,et al.Amulti-agent based cooperative voltage and reactive power control[J].IEEE Transactions on Power and Energy,2011,131(8):647-653.
[5]Dong Ping,Xu Liangde,Lin Yun,et al.Multiobjective coordinated control of reactive compensation devices among multiple substations[J].IEEE Transactions on Power Systems,2018,33(3):2395-2403.
[6]Wang Peng,Zou Jianlong,Ma Xikui.Stability analysis of magnetically controlled reactor for reactive power compensation based on small-signal model[J].IEEETransactions on Industrial Electronics,2018,65(11):8585-8594.
[7]代伟.分相差动保护试验分析[J].云南电力技术2015,43(Z2):58-61.
[8]陈健强,李婷.变电站无功补偿配置及运行分析[J]电气技术,2017,18(11):123-127.
[9]方明.电压无功综合控制系统的优化措施[J].电气技术,2017,18(9):102-106.
[10]李勇,程汉湘,方伟明,等.无功补偿装置在电力系统的应用综述[J].广东电力,2016,29(5):77-81.
[11]陈晓菊,张杭,张爱民,等.链式静止同步补偿器自适应反步控制器[J].电工技术学报,2017,32(24):205-213.
[12]任建文,高雯曼,申旭辉,等.统一潮流控制器装置级优化控制策略综述[J].电力电容器与无功补偿2018,39(4):140-146.
[13]黄娟娟,康义,陈凌云.南方电网无功补偿配置原则与标准探讨[J].中国电力,2013,46(3):43-46,58.
[14]胡雨姣.关于新建输变电工程无功补偿容量的初步计算[J].电气技术,2012,13(7):73-74.
[15]洪卫国,彭明生.一典型10k V线路通过无功补偿提高功率因数的方法[J].硅谷,2014(19):149-150.