电力系统运行均匀性分析与评估

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摘要均匀性是物质的一项基本状态属性。提出针对电网运行安全性与电力资产利用效率的均匀性分析与评估方法。首先, 分析电力系统不均匀性产生的原因, 研究系统运行均匀性与经济性和安全性之间的关系, 阐述在电网规划、运行和管理过程中考虑系统均匀性的重要性。其次, 从电力系统运行状态和安全裕度两个角度, 定义系统状态均匀度和固有均匀度评价指标。最后, 针对固有均匀度指标直接求解的困难, 提出基于设备负载率约束参数δ_U和δ_L的优化模型并进行求解。IEEE 30节点测试系统上的算例分析表明, 均匀性分析与评估对电力系统规划、运行和管理都具有积极的参考意义, 是对智能电网评价体系的补充与完善。

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	孙伟卿
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关键词 ：均匀性, 运行安全性, 资产利用率, 状态均匀度, 固有均匀度

Abstract：Homogeneity is a basic state property of matters. A homogeneity analysis and evaluation method on power system operation security and power asset utilization is proposed. Causes of power system inhomogeneity are first analyzed, and the relationship among power system homogeneity, economy and security is researched. After that, the importance of homogeneity through grid programming, operation and management are revealed. Then, for the considerations of system operation states and security margins, degrees of power system state homogeneity and inherent homogeneity are defined respectively. Finally, for the difficulties in direct solution of the inherent homogeneity index proposed, an optimization model using equipment load rate constraint parameters δ_U, and δ_L is defined and solved. Case study on IEEE 30-bus test system shows that homogeneity analysis and evaluation have positive reference significance to power system programming, operation and management, and can be complement and perfection to evaluation system of smart grids.

Key words： Homogeneity operation security asset utilization degree of state homogeneity degree of inherent homogeneity

收稿日期: 2012-02-20 出版日期: 2014-06-27

PACS:

TM711

基金资助:国家自然科学基金资助项目(51177099)

作者简介: 孙伟卿, 男, 1985年生, 博士研究生, 研究方向为电力系统优化、智能电网; 王承民, 男, 1970年生, 博士, 副教授, 博士生导师, 研究方向为电力系统优化、电力市场、智能电网。

引用本文:

孙伟卿, 王承民, 张焰, 潘智俊, 祝达康. 电力系统运行均匀性分析与评估[J]. 电工技术学报, 2014, 29(4): 173-180. Sun Weiqing, Wang Chengmin, Zhang Yan, Pan Zhijun, Zhu Dakang. Analysis and Evaluation on Power System Operation Homogeneity. Transactions of China Electrotechnical Society, 2014, 29(4): 173-180.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2014/V29/I4/173

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