| 考虑隐性故障时电网二级连锁过载的风险水平分析方法研究 |
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| 引用本文： | 邓慧琼,徐 刚,张 颖.考虑隐性故障时电网二级连锁过载的风险水平分析方法研究[J].河北科技大学学报,2014,35(2):164-171. |
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| 作者姓名： | 邓慧琼 徐 刚 张 颖 |
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| 作者单位： | 福建工程学院信息科学与工程学院;河北科技大学电气工程学院; |
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| 基金项目： | 福建省教育厅基金(JB13143);福建工程学院科研项目(GY-Z13104) |
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| 摘 要： | 针对电网的二级连锁过载现象,并结合继电保护隐性故障,提出了一种风险水平研究方法:首先结合直流潮流法定义了二级连锁过载模式下的风险指标,然后从初始故障和剩余系统受扰支路的不同角度给出了3种进行风险水平统计的模型,进一步结合IEEE39节点系统,通过模拟计算对风险的统计结果及隐性故障中的参数对风险统计的影响进行了分析。所提出的方法可为分析具有不确定因素的电网连锁过载现象提供一定的借鉴。
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| 关 键 词： | 电力系统 连锁故障 相继开断 隐性故障 统计规律 |
| 收稿时间： | 2013/4/24 0:00:00 |
| 修稿时间： | 2014/2/23 0:00:00 |
Research on risk level analysis method of cascading overload in power grid with two stages considering recessive faults |
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| DENG Huiqiong,XU Gang and ZHANG Ying.Research on risk level analysis method of cascading overload in power grid with two stages considering recessive faults[J].Journal of Hebei University of Science and Technology,2014,35(2):164-171. |
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| Authors: | DENG Huiqiong XU Gang and ZHANG Ying |
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| Abstract: | In order to solve the two-stage cascading overload problem considering the hidden failure in relay protection, a risk level research method is presented. Firstly, using the DC power flow method to define the risk indicators in the two-stage cascading overload mode, and three statistical risk models from different angles for the initial fault system and the remaining failure branches in power network are proposed. Then, integrated with the IEEE39 node system, the effects of the statistical results and risk parameters in hidden failures on the risk statistics are analyzed by simulation. The proposed method can provide a reference for the analysis of power grid cascading overload phenomenon with uncertainties. |
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| Keywords: | power system cascading failure successive failure hidden failure of relay statistical rule |
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