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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摘要考虑到天气因素对输电线载流量及电网安全的影响,采用摩尔根公式计算实时载流量;基于实时载流量,对电网进行实时静态安全分析,并通过线性规划法计算实时供电能力,定义了危险指标、风险指标、安全指标、安全均衡度等,来定量评估电网解列、越限、安全等情况;以此将电网安全状态划分为5个等级,给出了量化标准。同时,提出了电网安全分析的分区管理理念,通过“分解-协调法”来实现区域间的数据交换。算例表明该评价体系能定量刻画电网在正常、故障及检修时的安全状况,准确反映电网安全性高低、定位电网结构不合理的地方,便于提早采取措施。

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	马丽叶
	贾彬
	卢志刚
	曹良晶

关键词 ：安全等级, 静态安全性, 供电能力, 电网分区, 实时载流量

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

收稿日期: 2012-08-23 出版日期: 2014-11-05

PACS:

TM727

基金资助:国家自然科学基金（61071201）,河北自然科学基金（F2010001319）和秦皇岛市科学技术研究与发展计划（201302A013）资助项目

作者简介: 马丽叶男,1980年生,博士,讲师,研究方向为电力系统经济运行和评价。贾彬男,1985年生,硕士研究生,研究方向为电网安全运行评价。

引用本文:

马丽叶, 贾彬, 卢志刚, 曹良晶. 基于静态安全性和实时供电能力的输电网安全等级研究[J]. 电工技术学报, 2014, 29(6): 229-237. Ma Liye , Jia Bin , Lu Zhigang , Cao Liangjing. Research on Security Classification of Transmission Network Considering Static Security and Real-Time Power Supply Capability. Transactions of China Electrotechnical Society, 2014, 29(6): 229-237.

链接本文:

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

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