摘要
广西-广东交流输电通道联络线(以下简称“两广断面”)和近区电厂配置了大量失步解列装置,其可靠性对南方电网主网的安全稳定运行至关重要。基于实际一次系统构建了可精确定位振荡中心和计算测量点最小电压的等值系统模型,对多种型号和不同原理的失步解列装置开展了动态实时仿真校核,发现并解决了故障过程中失步闭锁判据不可靠、振荡中心落在失步安装点时装置拒动等典型问题,提高了失步判据和动作逻辑的可靠性;同时,基于电网全景仿真试验技术和实际系统失步解列配置,综合分析了两广断面近区失步解列装置协调配合存在的问题,提出了尽快将两广断面广域失步解列系统投入运行的实施建议。本文所提出的相关改进优化措施已在实际系统中得以应用。
A large number of out-of-step separation devices are installed in the tie lines and power plants near the AC transmission section of Guangxi and Guangdong(Guangxi-Guangdong section),and their reliabilities are very important for the security and stability of the main grid of China Southern Power Grid.Based on the actual primary system,this paper constructs an equivalent system model which can accurately locate the oscillation center and calculate the minimum voltage at the measuring point.Dynamic real-time simulation is carried out for various types and different principles of out-of-step separation devices.Typical problems such as unreliable outof-step locking criterion in fault process and device refusing to move when the oscillation center is located at the device installation point are found and solved at the same time,based on the power grid panoramic simulation test technology and the actual configuration of out-of-step separation devices,the problems existing in the coordination of out-of-step devices near the Guangxi-Guangdong section are comprehensively studied,and the suggestions of putting the wide area out-of-step separation system into operation as soon as possible are put forward.The improvement and optimization measures proposed in this paper have been applied to the actual system.
作者
刘瑞彩
常东旭
郭琦
朱益华
朱煜昆
武明康
毛李帆
LIU Ruicai;CHANG Dongxu;GUO Qi;ZHU Yihua;ZHU Yukun;WU Mingkang;MAO Lifan(Hainan Power Grid Co.,Ltd.,Haikou 570203,China;State Key Laboratory of HVDC,Electric Power Research Institute,CSG,Guangzhou 510663,China;Guangdong Provincial Key Laboratory of Intelligent Operation and Control for New Energy Power System,Guangzhou 510663,China;CSG Key Laboratory for Power System Simulation,Electric Power Research Institute,CSG,Guangzhou 510663,China)
出处
《南方电网技术》
CSCD
北大核心
2021年第6期78-84,共7页
Southern Power System Technology
基金
海南电网有限责任公司科技项目(HNKJXM20180721)。
关键词
失步解列
交流断面
振荡中心
实时仿真
安全稳定
out-of-step separation
AC transmission section
oscillation center
real-time simulation
security and stability
