摘要
随着新型电力电子器件在电网的大规模应用,引发谐波谐振的风险越来越高,而以往设计稳控装置跳闸判据时均未充分考虑新的谐波工况。结合南方电网实际发生的高次谐波谐振事件,开展了谐波对稳控装置的影响研究。针对研究中发现的稳控装置无法有效滤除特定频率高次谐波的缺陷,对装置的采样算法进行理论分析,并分析了现有条件下谐波对线路无故障跳闸判据的影响。结合电网实际稳控装置,提出了应对稳控装置拒动风险的临时措施,以及最终的装置软硬件改进方法。最后,利用稳控系统RTDS试验平台对优化方法进行了仿真试验,试验结果表明了方法的有效性。该方法对其他稳控装置的设计和改进有着重要的参考意义。
With the large-scale application of new power electronic devices in power grid,the risk of harmonic resonance is higher and higher.However,the design of trip criterion of security and stability control(SSC)device in the past seldom considers the new harmonic condition.Combined with the actual harmonic resonance happened in CSG,this paper carries out the study of harmonic impact on SSC device.According to defects found in studies that SSC device can't effectively filter out specific frequency of high order harmonic,sampling algorithm of the device is analyzed theoretically,and harmonic impact of no-fault line trip criterion is also analyzed under existing conditions.Combined with the actual SSC devices in CSG,a temporary measure to deal with the risk of refusing action of SSC device is put forward.Also an ultimate optimization method of SSC software and hardware is proposed and tested on the SSC test platform.Test results verify the effectiveness of the proposed method,and meanwhile the method has important significance to the design and improvement of other SSC devices.
作者
朱益华
郭琦
常东旭
徐光虎
张建新
任祖怡
胡斌江
ZHU Yihua;GUO Qi;CHANG Dongxu;XU Guanghu;ZHANG Jianxin;REN Zuyi;HU Binjiang(State Key Laboratory of HVDC,Electric Power Research Institute,CSG,Guangzhou 510663,China;CSG Key Laboratory of Power System Simulation,Guangzhou 510663,China;CSG Power Dispatching Control Center,Guangzhou 510663,China;NARI-Relays Electric Co.Ltd.,Nanjing 211102,China)
出处
《南方电网技术》
北大核心
2018年第1期55-61,共7页
Southern Power System Technology
基金
中国南方电网公司科技项目(ZBKJXM20170065)~~
关键词
谐波
稳控装置
硬件滤波
软件算法
RTDS仿真
harmonic
security and stability control device
hardware filter
software algorithm
RTDS simulation
