750kV母线可控高抗运行中的谐波影响  

The Affect of the Harmonics to the Operational Controllable High Resistance of 750 kV Bus

作　　者：杨勇[1] 秦睿[1] 郑晶晶[1] 高磊[1] 梅姚[1] 周喜超[1] 邢延东[1] 

机构地区：[1]甘肃省电力公司甘肃电力科学研究院,甘肃兰州730050

出　　处：《电气自动化》2013年第2期43-45,共3页Electrical Automation

摘　　要：750kV变母线可控高抗是国内750kV电压等级的可控高抗,之前缺少实际运行的经验。由于可控高抗在空投和容量调节时,均会产生不同程度、不同频次的谐波电压或谐波电流,因此对系统的稳定运行和设备的安全造成较大威胁。通过对750kV可控高抗空投及运行调节时的电气量记录及谐波分析,分别从空投时的二次谐波对网内直流输电系统的影响,可控高抗调节时产生的直流分量对电抗器自身的危害等角度进行分析研究,得出了750kV变母线可控高抗在空投及调节时的谐波特性。在此基础上,对750kV变母线可控高抗的运行维护提出了相应的建议。The controllable high resistance of the bus of 750 kV transformer substation is the first controlled high resistance of the 750 kV voltage level; it is lack of actual operating experience. Controllable high resistance is in the airdrop and capacity adjustment will produce different levels, different frequency harmonic voltage or harmonic current, therefore it will lead to a greater threat to the stability of the system operation and equipment safety. This article study the controllable high resistance when it is in airdrop and run adjustment, according to record the electrical quantities and analysis the harmonic, study the affect the second harmonic to the HVDC system of the net when it is in the airdrop and the hazards the DC component to the reactor when the controllable high resistance is adjustment, obtain the harmonic characteristics of the controllable high resistance of the bus of 750 kV transformer substation of Dunhuang when it is in the airdrop and capacity adjustment. Based on above statements, this article makes recommendations accordingly to the operation and maintain of the controllable high resistance of the bus of 750 kV transformer substation of Dunhuang.

关 键 词：可控高抗 空投 励磁涌流 二次谐波 直流分量 

分 类 号：TM472[电气工程—电器]