Joint primary frequency regulation strategy for asynchronous power grids connected by a VSC‐MTDC system

Autor:	Zheren Zhang, Zheng Xu, Guoteng Wang
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	Interconnection Renewable Energy Sustainability and the Environment Computer science media_common.quotation_subject TJ807-830 Converters Inertia Grid Renewable energy sources Power (physics) Control theory Asynchronous communication Voltage source Linear search media_common
Zdroj:	IET Renewable Power Generation, Vol 15, Iss 15, Pp 3588-3600 (2021)
ISSN:	1752-1416 1752-1424
Popis:	Asynchronous interconnection will reduce the inertia of each grid, and it is difficult for a small inertia grid to maintain frequency stability under the fluctuation of new energy or load. In order to improve the frequency stability of asynchronous power grids connected by a voltage source converters based multi‐terminal direct current (VSC‐MTDC) system, a joint primary frequency regulation (JPFR) strategy is proposed in this paper. The main principle of the proposed JPFR strategy is firstly to formulate frequency regulation protocols (FRPs) between asynchronous power grids. Next, an improved analytical steady‐state model of the VSC‐MTDC system is adopted. The improved model can calculate the power reference of each VSC according to the FRP, avoiding the impact on the grid not participating in the protocol. Then, based on the sequential search method, the results of the improved model are modified to prevent overload. Finally, simulations of a four‐terminal VSC‐MTDC system are carried out for validating the proposed JPFR strategy.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bcb17fce677a71479974b725feb07417 https://doaj.org/article/7609beb601144c5dac58d01c16999c3a Zobrazit plný text záznamu Plný text