特高压直流控制保护系统参数对零功率试验影响分析

零功率试验与阀组正常解锁在控制保护特性方面有着很大的区别,直流控制保护系统正常情况下所设置的参数有可能导致零功率试验失败。对云广特高压直流控制保护系统配置进行了介绍,并对控制保护系统影响零功率试验的因素进行了详细分析。为保障零功率试验顺利开展,云广特高压直流工程进行零功率试验时,对控制保护系统的参数设置做了部分修改,文中对所修改的内容进行了详细说明。实例分析表明,云广特高压直流输电工程所采用的方法有效保证了零功率试验的顺利开展。

Analysis of the Effects of the Control and Protection System Parameters on Zero-Load Test in Yunnan-Guangdong UHVDC Transmission Project

Zero-load test is very different from valve group deblock in control and protection characteristics, the parameters of DC control and protection system in normal condition may result in zero-load test failure. The configuration of control and protection system in Yunnan—Guangdong UHVDC transmission project was introduced in this paper,and the factors influencing the zero-load test of control and protection system were analyzed. In order to successfully conduct the zero-load test of the Yunnan—Guangdong UHVDC transmission project, the control and protection system parameters were partly modified. Case study shows that the method adopted in Yunnan—Guangdong UHVDC transmission project can effectively ensure the successful implementation of the zero-load test.