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输电断面热稳定功率极限区间在线识别方法
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南瑞集团有限公司国网电力科学研究院有限公司

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南方电网公司科技项目资助“电网限制短路电流运行方式在线智能决策控制系统研究


On-line Identification Method for Thermally Stable Power Limit Interval of Transmission Section
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NARI Group Corporation State Grid Electric Power Research Institute

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    摘要:

    针对日益复杂多变的运行情况和系统对安全稳定经济运行的要求,提出了热稳定输电断面功率极限区间在线识别方法。首先建立热稳定输电断面功率最小极限(CTC)和最大极限(TTC)的优化模型,然后基于关键热稳模式筛选和改进Benders分解法将原问题降维、解耦,最后基于集群计算平台快速求解。所提方法为调度运行人员实时准确掌握系统安全稳定边界、动态释放输电能力提供技术手段,某实际系统的算例分析验证了提出方法的实用性和有效性。#$NL关键词: 热稳极限; 关键模式;极限区间; 奔德斯分解; 非线性优化

    Abstract:

    To meet requirements for safe, stable and economic operation of power system under the increasingly complex and changing condition, an on-line identification method of power limit interval of thermal stability section is proposed in this paper. An optimization model for the Conservative Transfer Capability (CTC) and Total Transfer Capability (TTC) of the thermal stability transmission section is established. Based on screening of key thermal stability mode, the Benders decomposition method is used to reduce and decouple the original problem. The cluster computing platform is adopted to improve calculation speed. The proposed method pro-vides technical means for dispatch operators to accurately grasp the system"s security and stability boundaries and dynamically release power transmission capabilities. The analysis of an actual system example verifies the practicability and effectiveness of the proposed method. #$NLKeywords: thermal stability limit; key thermal stability mode; interval of transfer capability; Benders decomposition; nonlinear optimization

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张金龙,鲍颜红.输电断面热稳定功率极限区间在线识别方法[J/OL].电力系统自动化,http://doi.org/10.7500/AEPS20200201003.
ZHANG Jinlong,BAO Yanhong.On-line Identification Method for Thermally Stable Power Limit Interval of Transmission Section[J/OL].Automation of Electric Power Systems,http://doi.org/10.7500/AEPS20200201003.

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  • 收稿日期:2020-02-01
  • 最后修改日期:2020-05-11
  • 录用日期:2020-03-26
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