智能安全稳控系统在风电集中接入电网中的应用

吉林省松原、白城地区（简称松白）电网大量风电集中接入,火电亦超常规发展,并且电磁环网问题突出,送出压力与日俱增,同塔并架的500 kV输电通道故障失去后存在严重的稳定问题。为此在该区域8个厂站配置了安全稳定控制装置,组成松白电网智能安全稳定控制系统。系统采取分区分层设计,自动获取电网信息和识别故障类型,根据预设策略采取快速切风电、再切火电的措施保证电网安全稳定运行。介绍了松白电网安全稳定控制系统的配置、设计、策略及仿真计算情况。结果表明,此系统可以保证电网严重故障后的安全稳定运行,提高松白电网的输送能力。

Application of Intelligent Security and Stability Control System to Power Grid with Large Scale Wind Power

Increasing power transmission pressures are brought on Songbai power grid of Jilin province by concentrated accession of wind power and thermal power. And serious stability problems will be caused by the 500 kV multiple-circuit transmission lines at concurrent fault. An intelligent security and stability control system was built for Songbai power grid in order to solve those problems, which consists of stability control devices in eight stations (power plants). The system is designed by using layering and zoning strategy and can automatically identify the power grid information and fault types and rapidly cut off the wind power plants and thermal power plants in turn to protect the stability of power system according to the preset strategy. The configuration, control strategy, design and simulation analysis of the regional security and stability control system for Songbai power grid are presented in this paper. Results show that the security and stability control system can guarantee security and stable operation of power grid and improve the power supply ability of Songbai power grid.