Abstract
The use of wind power generation (WPG) as a source for black starts will significantly enhance the resiliency of power systems and shorten their recovery time from blackouts. Given that frequency stability is the most serious issue during the initial recovery period, virtual inertia control can enable wind turbines to provide frequency support to an external system. In this study, a general procedure of WPG participating in black starts is presented, and the key issues are discussed. The adaptability of existing virtual inertia control strategies is analyzed, and improvement work is performed. A new coordinated frequency control strategy is proposed based on the presented improvement work. A local power network with a permanent-magnet synchronous generator (PMSG)-based wind farm is modeled and used to verify the effectiveness of the strategy.
Highlights
Black start is the procedure of restoring an entire power system or portion of a power system without relying on the external electric power network after a blackout
This paper investigates the black start procedure with wind power generation (WPG) and the related key problems based on the actual demand of an electric utility in China
Coordinated frequency control strategy consists of three control modules: (1) frequency response responseCoordinated module of frequency diesel generator, the primary frequency function of the diesel control strategy consists of three modulation control modules: (1) frequency module of diesel generator, the primary frequency modulation function of the diesel generator governor generator governor to generator, respond tothetheprimary frequency variation of the system, and response module isofused diesel frequency modulation function of the the frequency diesel isresponse used to respond to the frequency variation of the system, and the frequency response of diesel of diesel power generation is considered as the variation base frequency regulation
Summary
Black start is the procedure of restoring an entire power system or portion of a power system without relying on the external electric power network after a blackout. With the maturation of micro-grid technology, several researchers have proposed using WPG in the black start procedure of a local network with auxiliary energy storage [6,7,8,9,10,11]. These schemes ensure that a micro grid undergoes a seamless transition from grid-connected mode to island mode when a blackout occurs in the external power network [12]. The research achievements will be adopted in an on-site test
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