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电力弹簧稳态运行范围及越限失灵机理分析
引用本文:程益生,陆振纲,汪可友,赵国亮,黄鑫,柳劲松. 电力弹簧稳态运行范围及越限失灵机理分析[J]. 电力系统自动化, 2017, 41(14): 147-152
作者姓名:程益生  陆振纲  汪可友  赵国亮  黄鑫  柳劲松
作者单位:电力传输与功率变换控制教育部重点实验室(上海交通大学), 上海市 200240,先进输电技术国家重点实验室(全球能源互联网研究院), 北京市 102211,电力传输与功率变换控制教育部重点实验室(上海交通大学), 上海市 200240,先进输电技术国家重点实验室(全球能源互联网研究院), 北京市 102211,电力传输与功率变换控制教育部重点实验室(上海交通大学), 上海市 200240,国网上海市电力公司科学研究院, 上海市 200437
基金项目:国家重点研发计划资助项目(2016YFB0900504);国家电网公司科技项目“基于电力弹簧的微电网新型运算模式原理、设计与控制技术研究”
摘    要:在介绍电力弹簧的研究背景和基本原理的基础上,通过相量图法对电力弹簧稳态调节能力进行详细分析,得到电力弹簧稳态运行范围,同时分析电力弹簧越限失灵的机理,给出了网侧电压越限条件下的关键负载电压设定值优化计算方法。若网侧电压在稳态运行范围内波动,经电力弹簧调节,可使关键负载电压幅值稳定到标准值;若超出稳态运行范围,即发生越限,则受电力弹簧调节能力限制,关键负载电压稳定值会发生偏离,甚至会发生电力弹簧失灵情况。通过优化网侧电压越限情况下的关键负载电压设定值计算方法,考虑关键负载电压允许小范围波动,可以保证电力弹簧在网侧电压越限情况下依旧正常工作,从而扩大电力弹簧稳定运行范围。最后,通过仿真实验对分析结果进行了验证。

关 键 词:电力弹簧;稳态运行范围;越限失灵;相量分析
收稿时间:2016-12-07
修稿时间:2017-05-12

Analysis on Steady-state Operating Range and Off-limits Malfunction Mechanism of Electrical Spring
CHENG Yisheng,LU Zhengang,WANG Keyou,ZHAO Guoliang,HUANG Xin and LIU Jinsong. Analysis on Steady-state Operating Range and Off-limits Malfunction Mechanism of Electrical Spring[J]. Automation of Electric Power Systems, 2017, 41(14): 147-152
Authors:CHENG Yisheng  LU Zhengang  WANG Keyou  ZHAO Guoliang  HUANG Xin  LIU Jinsong
Affiliation:Key Laboratory of Control of Power Transmission and Transformation(Shanghai Jiao Tong University), Ministry of Education, Shanghai 200240, China,National Key Laboratory for Advanced Transmission Technology(Global Energy Interconnection Research Institute), Beijing 102211, China,Key Laboratory of Control of Power Transmission and Transformation(Shanghai Jiao Tong University), Ministry of Education, Shanghai 200240, China,National Key Laboratory for Advanced Transmission Technology(Global Energy Interconnection Research Institute), Beijing 102211, China,Key Laboratory of Control of Power Transmission and Transformation(Shanghai Jiao Tong University), Ministry of Education, Shanghai 200240, China and Electric Power Research Institute of State Grid Shanghai Municipal Electric Power Company, Shanghai 200437, China
Abstract:With the background and basic principle of the electrical spring(ES)described, the modulability of ES is analyzed at length by the vector diagram method, and the operation range of the line voltage under which ES can work is investigated. Besides, the malfunction mechanism is analyzed, and a new computational method for optimizing the specified value of critical load voltage is found. When the line voltage changes in the range, the critical load voltage can be stabilized on the standard value by ES, but when changes are beyond the range, the ES will break down, and the critical load voltage will deviate from the standard state, or even the system can become unstable. Given the permissible fluctuation range of the critical load voltage, the expanded safety regulation domain of the ES system can be obtained by optimizing the specified value of the critical load voltage. Finally, the analysis results are validated by simulation and experiment results.
Keywords:electrical spring(ES)   steady-state operating range   off-limits malfunction   phasor analysis
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