电网移相器RTDS建模及应用场景分析

电网移相器可以有效均衡电网潮流分布,提升供电能力。为掌握移相器参与电网潮流调节的暂态特性,文中首先分析了移相器的结构特点以及调节电网潮流的原理;然后,基于实时数字仿真平台建立了双芯对称型移相器的详细电磁暂态模型,分析了串、并联变压器在潮流控制中的具体作用,并分别在不同运行方式下研究了电网潮流分布情况以及移相器的暂态控制特性,结果表明,文中所建移相器模型可有效控制电网的潮流分布;最后,总结了移相器在电网中的典型应用场景,以实际电网为例,分析了移相器通过均衡线路潮流分布提升电网供电能力和清洁能源消纳能力的可行性,为潮流控制技术在我国电网中大规模推广应用提供借鉴。

Modeling and application scenario analysis of power phase shift transformer based on RTDS

As a mature power flow control device, power phase shift transformer can effectively balance the power flow distribution and improve the power supply capacity of power grid. It also has the advantages of low investment cost and high operation reliability. Firstly, this paper analyzes the structure characteristics of phase shift transformer and the principle of power flow control. Then, based on the real-time digital simulation platform, the detailed electromagnetic transient model of dual core symmetrical phase shift transformer is established. The power flow fluctuation and the control characteristics of the phase shift transformer are studied under the put-in situation and the power flow regulation mode respectively. The results show that the proposed model is correct and effective. Finally, according to the actual operation situation of power grid, the application scenarios of phase shift transformer in power grid are summarized, which provides reference for the large-scale application of power flow control technology in China"s power grid.#$NLKeywords: phase shift transformer; power flow control; real-time digital simulation ; electromagnetic transient model