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Multi-level multi-area hybrid automatic voltage control system and its trial operation in Northeast China Grid 被引量:6
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作者 ZHANG XueMin MEI ShengWei +4 位作者 SU XinYi WANG Gang JIA Wei SHAO GuangHui XU XingWei 《Science China(Technological Sciences)》 SCIE EI CAS 2011年第9期2501-2505,共5页
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 ... 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: l) 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 MI ,MA-HAVC system in tha Northeast China Grid. 展开更多
关键词 hybrid automatic voltage control coordinated control advanced state estimation
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Improved Voltage Control Strategy for Photovoltaic Grid-Connected System Based on DoubleLayer Coordination Control 被引量:3
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作者 戚艳 贾宏杰 《Transactions of Tianjin University》 EI CAS 2012年第4期271-278,共8页
An improved automatic voltage coordination control strategy (AVCCS) based on ;automatic voltage control (AVC) and battery energy storage control (BESC) is proposed for photovoltaic grid-connected system (PVGS)... An improved automatic voltage coordination control strategy (AVCCS) based on ;automatic voltage control (AVC) and battery energy storage control (BESC) is proposed for photovoltaic grid-connected system (PVGS) to mitigate the voltage fluctuations caused by environmental disturbances. Only AVC is used when small environ- mental disturbances happen, while BESC is incorporated with AVC to restrain the voltage fluctuations when large disturbances happen. An adjustable parameter determining the allowed amplitudes of voltage fluctuations is introduced to realize the above switching process. A benchmark low voltage distribution system including ]?VGS is established by using the commercial software Dig SILENT. Simulation results show that the voltage under AVCCS satisfies the IEEE Standard 1547, and the installed battery capacity is also reduced. Meanwhile, the battery's service life is ex- tended by avoiding frequent charges/discharges in the control process. 展开更多
关键词 photovoltaic power system voltage control pulse width modulation (PWM) inverter state ofcharge (SOC) automatic voltage coordination control strategy (AVCCS)
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