引用本文: | 刘洪波,边娣,孙黎,等.交直流混联系统机电—电磁暂态混合仿真研究[J].电力系统保护与控制,2019,47(17):39-47.[点击复制] |
LIU Hongbo,BIAN Di,SUN Li,et al.Electromechanical transient-electromagnetic transient hybrid simulation of AC/DC hybrid system[J].Power System Protection and Control,2019,47(17):39-47[点击复制] |
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摘要: |
大规模高压直流跨区输电、交直流混联使电力系统的动态特性更加复杂,仿真分析成为研究交直流混联大电网的重要工具。传统电力系统暂态仿真主要分为机电暂态仿真和电磁暂态仿真。前者适用于开关切换不频繁、仿真步长较大的工频元件,可实现大规模系统仿真。后者适用于开关频繁切换、小步长仿真的电力电子元件,可实现对小系统的详细建模仿真。通常,仿真的规模与仿真元件的精细程度之间存在矛盾。为研究直流系统控制模型对混联系统动态特性的影响,兼顾两种仿真方法的优点,采用中国电力科学研究院开发的ADPSS仿真软件,分析了计及脉冲发生机制和定电压控制器的仿真差异。并用IEEE39节点为基础的扩展系统进行验证,可为含有大量电力电子器件接入的交直流混合系统提供更高效、更准确的建模方式。 |
关键词: 高压直流输电 交直流混联 定电压控制器 ADPSS |
DOI:10.19783/j.cnki.pspc.181231 |
投稿时间:2018-09-29修订日期:2019-03-01 |
基金项目:国家重点研发计划项目资助(2017YFB0902000) |
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Electromechanical transient-electromagnetic transient hybrid simulation of AC/DC hybrid system |
LIU Hongbo,BIAN Di,SUN Li,YUN Zejian,LI Yao |
(School of Electrical and Electronic Engineering, Northeast Electric Power University, Jilin 132012, China;Inner Mongolia Hulunbuir Power Generation Co., Ltd., Hulunbuir 021000, China) |
Abstract: |
Large-scale High Voltage Direct Current (HVDC) cross-region transmission and AC/DC hybrid transmission make the dynamic characteristics of power system more complex. Simulation is a powerful method for studying AC/DC hybrid grids. Electromechanical and electromagnetic transient simulation has been widely used in power system simulation analysis. Electromechanical transient simulation can use large-step to simulate the components of power frequency with infrequent switching, so it can simulate a large scale power system. Electromagnetic transient simulation is suitable for modeling the components’ details considering frequent switching in the small scale power system by small-step. Usually it is a contradiction between system’s scale and component’s precision in the simulation. In order to analyze the influence of HVDC system control model in hybrid power system and combine advantages of two simulation methods, this paper establishes a large-scale AC/DC hybrid system in Advanced Digital Power System Simulator (ADPSS), which is developed by China Electric Power Research Institute. The simulation differences are analyzed considering the detail modeling of the pulse generator and the constant voltage controller. It is verified by the extended system based on IEEE 39-bus. It will provide a more efficient and accurate simulation modern for AC/DC hybrid systems with a large number of power electronic devices. This work is supported by National Key Research and Development Program of China (No. 2017YFB0902000). |
Key words: HVDC AC/DC hybrid system constant voltage controller ADPSS |