摘要
由于电网的系统越来越大,输电线路电压等级越来越高,现代输电网管理和运营模式的变革迫在眉睫,这也要求电力系统的运行和控制更安全、更稳定、更高效、更灵活。随着电力系统的不断发展和继电保护设备的大量使用,传统的检修模式已经不能适用于当前的电力系统,因此,电力系统对继电保护设备的检修模式进行了改革,构建电力双回线路继电保护设备故障状态预测模型,以继电保护二次回路的输出电流有效值和三次谐波平面电流分量为约束变量,进行二次回路的各相定子电流稳定性分析,检修电力双回线路继电保护设备的状态。
As the grid system becomes larger and larger,and the transmission line voltage level is getting higher and higher,the transformation of modern transmission grid management and operation models is imminent.This also re?quires the operation and control of power systems to be safer,more stable,more efficient,and more flexible.With the continuous development of the power system and the extensive use of relay protection equipment,the traditional main?tenance mode can no longer be applied to the current power system.Therefore,the power system has reformed the maintenance mode of relay protection equipment,and constructed a fault state prediction model of relay protection equipment for power double-circuit lines,and analyzed the stator current stability of each phase of the secondary cir?cuit by taking the effective value of the output current of the secondary circuit of the relay protection and the plane current component of the third harmonic as constraint variables,in order to repair the status of the power protection equipment of the double-circuit line.
作者
吕渊
许洪新
李腾飞
LYU Yuan;XU Hongxin;LI Tengfei(Hydropower Plant of PetroChina Changqing Oilfield Company,Qingyang Gansu 745100;China University of Petroleum(East China),Dongying Shandong 257061;Material Supply Division of PetroChina Changqing Oilfield Company,Xi'an Shaanxi 710016)
出处
《河南科技》
2019年第32期67-69,共3页
Henan Science and Technology
基金
广东省本科高校教学质量与教学改革工程——实验示范中心建设项目（2017002）
关键词
电力双回线路
继电保护设备
检修
power double circuit
relay protection equipment
overhaul
