微电网离网运行有功缺额计算方法

姚莉娜; 杨东海; 段运鑫; 刘宝江; 孙玉锋

引用本文:	姚莉娜,杨东海,段运鑫,等.微电网离网运行有功缺额计算方法[J].电力系统保护与控制,2015,43(15):137-144.
	YAO Lina1,,YANG Donghai,DUAN Yunxin,et al.A calculation method of active power shortage in off-grid microgrid[J].Power System Protection and Control,2015,43(15):137-144

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微电网离网运行有功缺额计算方法
姚莉娜¹, 杨东海², 段运鑫², 刘宝江², 孙玉锋²
1.郑州轻工业学院,河南郑州 450002;2.许继电气股份有限公司,河南许昌 461000

摘要:

针对微电网中由于存在多种分布式电源导致其系统频率稳定控制方式比传统的配电网复杂的问题，研究快速求出微电网离网频率异常时系统内存在的有功功率缺额值的计算方法。提出了一种快捷的微电网有功功率缺额计算方法，并分析了该有功功率缺额算法对于微电网离网频率稳定控制的意义。算例分析结果表明，该方法可以指导频率稳定控制系统对孤立运行微电网内电力设备进行精确的有功功率调度，使系统频率快速恢复正常。且可以指导微电网能量管理系统进行频率稳定控制策略的仿真测试与验证。

关键词: 微电网频率稳定控制功频响应特性有功功率缺额频率调节效应系数有功调节系数

DOI：10.7667/j.issn.1674-3415.2015.15.022

分类号:

基金项目:

A calculation method of active power shortage in off-grid microgrid

YAO Lina1,¹, YANG Donghai², DUAN Yunxin², LIU Baojiang², SUN Yufeng²

1.Zhengzhou University of Light Industry, Zhengzhou 450002, China;2.Xuji Electric Co., Ltd., Xuchang 461000, China

Abstract:

Based on the fact that the system frequency control method in micro grid is much difficult than the situation in traditional distribution power grid as the micro grid contains a variety of DERs, this paper researches on the control method to know how much the shortage gap of the active power storage in the abnormal frequency state during the off-grid operation of the micro grid system. A fast calculation method of the active power vacancy is proposed and the meaning of this method for the off-grid micro grid frequency stability is analyzed. Numerical example result shows that, this method for the active power vacancy can be used not only to guide the frequency stability control system adjusting the active power of the equipment in the off-grid micro grid accurately in order to maintain the system frequency within the range of conformity, but also to guide simulation verification of the control strategy about the frequency stability of the micro grid.

Key words: micro grid control strategy about the frequency stability response characteristics between active power and frequency active power shortage load frequency coefficient active power adjustment coefficient

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