风电为主体的海上油田群电力系统构网方式初探

Preliminary Exploration of Grid-Forming Strategies for Wind Power-Dominant New-Type Offshore Oilfield Power Systems

中文关键词:新型电力系统  构网型控制  海上风电  构网方式

keywords:new type power systems  grid-forming control  offshore wind power  grid-forming strategies

中文摘要:该文研究了以风电为主体的海上油田群新型电力系统的构网方式。首先，以某实际海上油田群电网为例，说明其基本结构和边缘平台轻/重负荷两类典型情况；然后，分析构网型海上风电控制策略，提出集中接入、部分集中接入和分散式接入3种构网方式；最后，以典型故障下系统不失稳为判据，通过时域仿真分析3种构网方式在边缘平台轻/重负荷两类情况下的稳定差异及失稳原因，提出适用于以风电为主体的海上油田群新型电力系统的构网策略。结果表明，部分集中接入的构网方式能够在边缘存在重负荷情况下达到稳定，且需合理配置中央与边缘平台的风电容量比例。

Abstract:This paper investigates grid-forming strategies for establishing a wind power-dominant， new-type offshore oilfield power system. Firstly， the inherent architecture of the offshore oilfield power system is defined， differentiating between two primary scenarios characterized by either light or heavy loads on the edge platforms. Secondly the study explores control strategies relevant to grid-forming offshore wind power， introducing three fundamental integration methods: centralized， semi-centralized， and distributed. Utilizing time-domain simulations， the performance of these integrative approaches under various conditions is evaluated. Finally， employing the criterion that the system remains stable under typical fault conditions， the stability differences and causes of instability for the three methods under light/heavy load conditions at the edge platform are analyzed through time-domain simulations. Based on these findings， a grid-forming strategy for new-type offshore oilfield power systems is proposed. Results indicate that the semi-centralized mode can maintain stability in scenarios with significant edge platform loads， but the balance between wind power capacities at central and peripheral platforms remains a critical factor.