考虑限制功能的励磁系统仿真模型优化研究

摘要

针对电力系统仿真计算模型与现场发电机励磁调节器模型不一致而导致仿真出现机端电压越限不合理的结果,提出一种考虑限制功能的改进型励磁系统仿真模型.介绍励磁系统顶值约束的模型结构及作用,通过机电-电磁混合仿真软件(dynamic simulation program,DSP)自定义模块对励磁系统进行改进,并在实时数字模拟器(real time digital simulator,RTDS)和PSD-BPA中搭建单机无穷大系统,对模型的准确性、有效性进行验证.最后,利用广东电网实际系统动态仿真进行比较,证明所提励磁模型可以有效抑制电压越限问题.%In allusion to the problem of unreasonable out-of-limit of terminal voltage in simulation caused by inconsistence of simulation calculation model for power system and field generator excitation regulator model,a kind of improved simulation model for the excitation system considering limit function is presented.This paper introduces model structure and role of top value restriction of the excitation system,and improvement for the system by using dynamic simulation program (DSP) customer module.In real time digital simulator (RTDS) and PSD-BPA,a single-machine infinite-bus system is established for verifying correctness and effectiveness of the model.Finally,by dynamic simulation and comparison for the actual system of Guangdong power grid,it proves that the proposed excitation model can effectively restrict voltage out-of-limit.