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考虑安全约束的未来输电网利用率评估

Future Transmission Network Utilization Evaluation Considering Operational Security Constraints

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【作者】 孙亚肖晋宇彭冬龙望成张振高王学军李慧张沛王澍

【Author】 SUN Ya;XIAO Jinyu;PENG Dong;LONG Wangcheng;ZHANG Zhengao;WANG Xuejun;LI Hui;ZHANG Pei;WANG Shu;Key Laboratory of Smart Grid (Tianjin University), Ministry of Education;State Power Economic Research Institute;Tianjin Electric Power Corporation;

【机构】 智能电网教育部重点实验室(天津大学)国网北京经济技术研究院天津市电力公司

【摘要】 根据电改"9号文"的规定,未来电网公司将按照政府核定的输配电价收取过网费。设备的利用率将决定未来电网公司的收入,成为电网规划经济性评估的主要因素。为此,提出一种考虑安全约束的未来输电网利用率评估方法,在基于蒙特卡罗仿真的概率潮流计算过程中,引入考虑安全约束的发电调度算法,通过对未来输电网运行状态的大量仿真,计算输电设备的利用率指标。利用IEEE RTS 24节点系统对本文提出的方法进行验证,并定量分析了安全约束发电调度对输电网利用率的影响。仿真结果表明,所提方法使调度安排更加合理,无线路过载等故障问题出现,所得利用率指标能真实客观地反映实际系统利用水平。

【Abstract】 According to the 9th power industry reform document, revenue of electric power companies will come from transmission and distribution tariff approved by government in future. Utilization of power grid equipment will determine income of electric power companies to some extent, and will be a major factor in economic evaluation of transmission planning. A new approach of calculating transmission network utilization considering security constraints is proposed for transmission network planning studies. This approach incorporates security constrained generation dispatch into probabilistic load flow algorithm based on Monte Carlo simulation. It calculates utilization indices based on Monte Carlo simulation on variety of operation conditions. The proposed approach is validated with IEEE RTS 24-bus system. Meanwhile, impact of security constrained generation dispatch on transmission network utilization is quantitatively analyzed. Results show that with this approach generation dispatch becomes more reasonable without failure problems such as line overload occurring. Obtained utilization indices can objectively reflect utilization of actual systems.

  • 【文献出处】 电网技术 ,Power System Technology , 编辑部邮箱 ,2016年12期
  • 【分类号】TM715
  • 【被引频次】8
  • 【下载频次】296
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