基于NI-PXI的微电网分级控制数模混合仿真方法

李光辉; 何国庆; 孙艳霞; 郝木凯

基于NI-PXI的微电网分级控制数模混合仿真方法

中国电力科学研究院,北京 100192

基金项目: 国家863课题(2011AA05A106)

详细信息

作者简介:
李光辉(1984—),男,硕士,工程师,主要研究方向为分布式电源和微电网关键技术。

中图分类号: TM4
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出版历程
- 收稿日期: 2014-07-21
- 发布日期: 2015-06-08

Digital/Physical Hybrid Simulation Method Based on NI-PXI for Hierarchical Control Strategy of Micro-grid

China Electric Power Research Institute, Beijing 100192,China

摘要

摘要: 针对多电压源型微源组网的独立型微电网,首先提出了基于微源下垂控制的系统分级控制策略:利用微源一级下垂控制,实现组网微源间功率自动分配;利用MGEMS二级控制修正下垂曲线空载频率和电压,提高系统供电质量;利用MGEMS三级控制确定下垂曲线基点功率及斜率,实现系统经济运行。其次设计了基于NIPXI的微源分层控制数模混合仿真平台,实现了基于NI VeriStand的实时建模仿真技术。最后提出了基于NIPXI的微电网分级控制数模混合仿真平台整体方案,并在国家能源大型风电并网系统研发(实验)中心完成系统搭建,开展微电网的分级控制数模混合仿真实验,结果验证了控制策略的有效性。
- 微电网 /
- 分级控制 /
- NIPXI /
- 数模混合仿真 /
- 下垂控制
Abstract: As to the islanded micro-grid composed of multi-voltage source type micro-sources, a hierarchical control strategy based on the droop control of micro-sources is proposed. On the primary control level, the power of the isolated system is automatically allocated between micro-sources. On secondary control level, the no-load frequency and voltage of droop curve characteristics are adjusted by micro-grid energy management system (MGEMS) to improve power quality. On tertiary control level, the power and droop gain of droop characteristics at rated set point are coordinated by MGEMS to achieve economic operation of micro-grid. A digital/physical hybrid simulation scheme based on NI-PXI (PCI Extensions for Instrumentation, PXI) of micro-sources is proposed, and a real-time modeling and simulation method based on NI VeriStand is realized in this paper. In the end, a digital/physical hybrid simulation platform for hierarchical control based on NI-PXI is built in National Wind Power Grid Integration R&D(Testing)Center, and the validity of hierarchical control strategy is verified based on the digital/physical hybrid simulation experiment for hierarchical control of micro-grid.
- micro-grid /
- hierarchical control /
- NI-PXI /
- digital/physical hybrid simulation /
- droop control

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