Multi-level multi-area hybrid automatic voltage control system and its trial operation in Northeast China Grid

Abstract

In order to coordinate automatic voltage control (AVC) systems of a large interconnected system, a multi-level multi-area hybrid automatic voltage control (MLMA-HAVC) system was constructed. This system began its trial operation in the Northeast China Grid in January 2010, and for the first time in China and abroad it realized automatic close-loop control of multi-area and multi-level interconnected power grid and multi-objective self-approaching optimization in aspects of security, high quality and economic operation. This system has three breakthroughs in theory and engineering application: 1) Established the MLMA-HAVC theory to solve multi-objective optimization of large-scale system; 2) proposed reactive power/voltage coordination control method to inhibit or further eliminate regional oscillations; 3) presented advanced state estimation algorithm to guarantee acquisition of high reliability data. This paper summarizes the basic principle of MLMA-HAVC, and reports engineering realization of MLMA-HAVC system in the Northeast China Grid. hybrid automatic voltage control, coordinated control, advanced state estimation Citation: Zhang X M, Mei S W, Su X Y, et al. Multi-level multi-area hybrid automatic voltage control system and its trial operation in Northeast China Grid.

Research focuses and advance technologies of smart grid in recent years

“…Numerical simulation tests on power system with power electronics validated the effectiveness of the proposed method. A multi-level multi-area hybrid controller was developed for the automatic voltage control in Northeast China grid [37]. This work successfully investigated and solved the following three hard problems: the coordination of AVC systems, the closed-loop voltage control method for multi-objective optimization and the high quality data for close-loop voltage control.…”