基于特征线的短线路解耦方法及其仿真分析

Decoupling Method of Short Line Based on Characteristic Line and Its Simulation Analysis

为了全面反映分布式电源给配电网带来的暂态过程以及分布式电源并网给主动配电网仿真速度带来的限制,急需提升暂态仿真速度。目前多采用分核并行仿真方式进行提速,即通过分布式参数长线路解耦方法将配电网进行分区解耦,但是由于配电网的短线路特性导致传统长线路解耦方法并不适用于配电网,所以文章对其进行改进,以行波理论详细分析,提出增加分布式电容的基于特征线的短线路解耦方法,并进行了仿真分析,验证了其有效性。

In order to fully reflect the transient process brought by distributed generation to the distribution network and the limitation of distributed generation grid connection to the simulation speed of active distribution network,it is urgent to increase the speed of transient simulation.At present,the split-core parallel simulation method is often used to speed up,that is,the distribution network is decoupled by the distributed parameter long line decoupling method.However,due to the short line characteristics of the distribution network,the traditional long line decoupling method is not suitable for distribution network,so this paper improves it,analyzes in detail with traveling wave theory,proposes a short line decoupling method based on characteristic line that adds distributed capacitors,and conducts simulation analysis to verify its effectiveness.