基于静态安全性和实时供电能力的输电网安全等级研究

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Abstract Grid security is associated with internal and external factors, in which the internal factor is mainly grid’s structure and the external factor is mainly operating status. The paper considers the weather’s effect on current capacity and grid’s security, and adopts Morgan formula to calculate the real-time current capacity. Based on real-time current capacity, it makes real-time static security analysis to grid and adopts linear programming to calculate real-time power supply capability. The paper defines danger index, risk index, safety index, safety and equilibrium to assess grid situation such as islanding, off-limit, and safety. On this basis, the grid’s security level is divided into five levels, and standards of each grade are quantified. It also proposes the partition management concept of grid security analysis. It introduces decomposition-coordination method to realize data exchanging between the regions. According to the simulation example, the evaluation system can quantitatively depict the grid’s security in condition of normal, fault and overhaul, accurately reflect grid security and locate irrational aspects of grid’s structure, which is convenient to take step timely.

Key words： Security classification static security power supply capability decomposed grid real-time current capacity

Received: 23 August 2012 Published: 05 November 2014

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TM727

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	Articles by authors
	Ma Liye
	Jia Bin
	Lu Zhigang
	Cao Liangjing

Cite this article:

Ma Liye,Jia Bin,Lu Zhigang等. Research on Security Classification of Transmission Network Considering Static Security and Real-Time Power Supply Capability[J]. Transactions of China Electrotechnical Society, 2014, 29(6): 229-237.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2014/V29/I6/229

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