基于高耦合电抗器的500kV限流器限流特性等效试验  

Equivalent test of current limiting characteristics of 500 kV current limiter based on high coupling reactor

作　　者：褚博 唐强 王培人 宇文博 苏海博 修士新[1] 贾申利[1] CHU Bo;TANG Qiang;WANG Peiren;YU Wenbo;SU Haibo;XIU Shixin;JIA Shenli(State Key Laboratory of Electrical Insulation for Power Equipment,Xi’an Jiaotong University,Xi’an 710049,China;Xi’an High Voltage Apparatus Research Institute Co.,Ltd.,Xi’an 710077,China;Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd.,Guangzhou 510410,China)

机构地区：[1]西安交通大学电力设备电气绝缘国家重点实验室,陕西西安710049 [2]西安高压电器研究院股份有限公司,陕西西安710077 [3]广东电网有限责任公司广州供电局,广东广州510410

出　　处：《电力自动化设备》2023年第4期201-206,共6页Electric Power Automation Equipment

基　　金：国家重点研发计划项目(2018YFB0904300);中国南方电网有限公司科技项目(GZHKJXM20180055)。

摘　　要：基于高耦合电抗器的500 kV限流器在限流状态下的阻抗较大,而由于试验室电源电压有限,限流状态下的试验电流远小于额定短路电流,因此500 kV限流器在额定短路工况下的限流特性试验和动稳定性考核试验无法直接进行。针对上述问题,提出了一种间接验证限流器限流特性的等效试验方法。通过设计降低阻抗参数的比例缩小样机,在试验室条件下进行全电流的比例缩小样机间接试验,同时结合试验室内500 kV限流器比例缩小样机的低电压试验和500 kV限流器接入实际系统的高电压人工短路试验,综合验证500 kV限流器的限流能力。研究结果表明,500 kV限流器在额定短路工况下的限流幅度满足设计要求,所设计试验方法具有良好的等价性。The 500 kV current limiter based on the high coupling reactor has a larger impedance under the current limiting state.Due to the limited power supply voltage in the laboratory,the test current under the current limiting state is far less than the rated short circuit current.So,the current limiting characteristic test and dynamic stability assessment test under the rated short circuit condition of 500 kV current limiter cannot be carried out directly.To solve the above problems,an equivalent test method is proposed to indi⁃rectly verify the current limiting characteristics of the current limiter.By designing a scaled down prototype with reduced impedance parameters,the indirect test of scaled down the prototype with full current is carried out in the laboratory.At the same time,combined with the low voltage test of the 500 kV current limiter scaled down prototype in the laboratory and the high voltage artificial short circuit test of the 500 kV current limiter connected to the actual system,the current limiting capacity of the 500 kV current limiter are com⁃prehensively verified.The results show that the current limiting amplitude of 500 kV current limiter under rated short circuit conditions meets the design requirements,and the designed test method has good equivalence.

关 键 词：限流器 限流特性 人工短路试验 等效试验方法 比例缩小样机 

分 类 号：TM774[电气工程—电力系统及自动化]