| DG容量及接入方式对变电站继电保护定值的影响 |
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| 引用本文： | 孙鸣,赵月灵,王磊. DG容量及接入方式对变电站继电保护定值的影响[J]. 电力自动化设备, 2009, 29(9) |
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| 作者姓名： | 孙鸣 赵月灵 王磊 |
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| 作者单位： | 合肥工业大学,电气与自动化工程学院,安徽,合肥,230009;合肥工业大学,电气与自动化工程学院,安徽,合肥,230009;合肥工业大学,电气与自动化工程学院,安徽,合肥,230009 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 为探讨分布式发电(DG)的并网运行将可能对原变电站的继电保护带来哪些影响,以生物质能发电厂接入110 kV终端变电站为例,从故障点是否出现在系统电源进线入手,通过分析DG接入对变电站线路短路电流增量的影响以及线路故障尚未切除时DG能够满足暂态稳定运行时间的长短,进而研究分布式电源的不同容量、不同接入方式对所接入变电站原有三段式电流继电保护的影响,并通过EMTDC/PSCAD仿真加以验证.研究结果表明,在不考虑孤岛运行的前提下,分布式电源可能会对所接入的变电站出线三段式电流保护产生影响;对电流保护的动作电流定值的影响主要取决于DG容量的大小,会对哪些段的动作电流定值产生影响取决于故障时DG失稳时间的长短.
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| 关 键 词： | 分布式发电 继电保护 整定值 EMTDC PSCAD |
Impact of DG capacity and location on relay protection of substation |
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| SUN Ming,ZHAO Yueling,WANG Lei. Impact of DG capacity and location on relay protection of substation[J]. Electric Power Automation Equipment, 2009, 29(9) |
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| Authors: | SUN Ming ZHAO Yueling WANG Lei |
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| Affiliation: | SUN Ming,ZHAO Yueling,WANG Lei(School of Electric Engineering , Automation,Hefei University of Technology,Hefei 230009,China) |
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| Abstract: | With a biomass energy power plant connected to 110 kV terminal substation as an example,the impact of DG(Distributed Generation) capacity and connection mode on three-section overcurrent protection of substation is discussed from different aspects:the fault location,the short circuit current increment and the steady running time of DG after fault.Simulative results with EMTDC /PSCAD show that:without islanded operation,DG has impact on the trip current setting depending on its capacity and which section is ... |
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| Keywords: | EMTDC PSCAD |
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