| 引用本文: | 鲍颜红,张金龙,江叶峰,徐伟,毕明德,杨君军.考虑新能源出力不确定性的可用输电能力在线评估方法[J].电力自动化设备,2020,40(4): |
| BAO Yanhong,ZHANG Jinlong,JIANG Yefeng,XU Wei,BI Mingde,YANG Junjun.Online assessment method of available transfer capacity considering uncertainties of renewable energy output[J].Electric Power Automation Equipment,2020,40(4): |
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| 摘要: |
| 准确、高效地在线计算新能源送出断面的可用输电能力(ATC)对于在维持系统安全稳定运行的前提下提高新能源消纳能力具有重要意义。提出一种考虑新能源出力不确定性的ATC在线评估方法，在各新能源电厂出力区间概率的基础上进行概率潮流计算，获得关键输电断面的功率区间及其概率；评估断面功率区间故障后新能源机组脱网和受端负荷损失情况，获得运行风险；以收益与运行风险差值最大化为目标获得断面的ATC值。某实际电网算例验证了所提方法的有效性。 |
| 关键词: 新能源出力 可用输电能力 在线评估 安全稳定 运行风险 |
| DOI：10.16081/j.epae.202004013 |
| 分类号:TM73 |
| 基金项目:国家电网公司科技项目(大电网调度运行关键指标及实时评价方法研究) |
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| Online assessment method of available transfer capacity considering uncertainties of renewable energy output |
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BAO Yanhong1, ZHANG Jinlong1, JIANG Yefeng2, XU Wei1, BI Mingde2, YANG Junjun1
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1.NARI Group Corporation(State Grid Electric Power Research Institute),Nanjing 211106, China;2.State Grid Jiangsu Electric Power Company Dispatch and Control Center, Nanjing 210024, China
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| Abstract: |
| The accurate and efficient online calculation of ATC(Available Transfer Capability) of renewable energy delivery section is of great significance for improving the renewable energy consumption capacity under the premise of maintaining safe and stable operation of the system. An online assessment method of ATC considering the uncertainties of renewable energy output is proposed. Based on the probability of output interval of each renewable energy plant, the probabilistic load flow is calculated to obtain the power interval and its probability of key transmission section. The situation of off-grid renewable energy units and load loss at the receiving end is evaluated to obtain the operational risk. The maximum difference between the revenue and the operational risk is taken as the objective to obtain the ATC value of the section. The effectiveness of the proposed method is verified by the case of an actual power grid. |
| Key words: renewable energy output available transfer capacity online assessment security and stability operational risk |
