摘要
磁控型并联电抗器具有容量连续可调的特点,在限制过电压和无功补偿方面有广阔的应用前景。目前,磁控型并联电抗器保护的算法均基于恒定的电抗器容量,在电抗器容量变化时灵敏度及可靠性下降,可能导致保护拒动、误动。将参数识别原理用于电抗器保护中,通过对电抗器阻抗参数的识别,对电抗器容量进行实时修正,使保护参数与电抗器运行工况相匹配。以某实际工程的参数为例,进行了定量分析,验证了该方法的有效性。该方法的应用将极大地提高磁控型并联电抗器保护的灵敏性,并提供更加可靠的保护。
Magnetic shunt reactors are of continuously adjustable capacity,and have wide application prospect in limiting over-voltage and reactive power compensation.At present,the protection of magnetic shunt reactors is based on constant reactor capacity,so that the sensitivity and reliability of the protection will decline if the reactor capacity changes,which might lead to the failure to operate or unwanted operation of the protection.Applying the parameter identification principle in reactor protection,by identifying the impedance parameters of the reactor,the protection parameters will match with the operating conditions of reactors.The feasibility of this method was improved by quantitative analysis on an engineering case.Application of this method will greatly improve the sensitivity of the magnetic reactor and provide more reliable protection.
作者
行武
郭晓
王哲
史博伦
XING Wu;GUO Xiao;WANG Zhe;SHI Bolun(Nanjing SAC Power Grid Automation Company Limited,Nanjing 211151,China)
出处
《华电技术》
CAS
2020年第6期62-65,71,共5页
HUADIAN TECHNOLOGY
关键词
参数识别原理
磁控型并联电抗器
继电保护
算例分析
阻抗
特高压技术
parameter identification principle
magnetic shunt reactor
relay protection
calculation case study
impedance
UHV
