基于电流行波的微电网保护策略
针对微电网的故障电流小、潮流双向性等特性,提出了适合微电网的保护策略并进行了仿真。传统的基于过电流的电网保护技术对于微电网的保护受到一定限制,因而需要对新的技术进行探索。在对这些因素分析的基础上,提出了微电网的保护策略：通过小波变换对电流行波进行分析判断故障位置,母线电压确定故障发生与否及扰动电压判断故障类型。利用SVPWM控制原理在Matlab/Simulink中使用SimPowerSystems搭建微电网的模型,并对孤岛运行模式下微电网不同的故障类型进行仿真分析,仿真结果表明所提出的保护策略在孤岛运行的方式下是有效的。...
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| Published in | 电力系统保护与控制 Vol. 42; no. 18; pp. 94 - 100 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
河北工业大学控制科学与工程学院,天津,300130
2014
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-3415 |
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| Abstract | 针对微电网的故障电流小、潮流双向性等特性,提出了适合微电网的保护策略并进行了仿真。传统的基于过电流的电网保护技术对于微电网的保护受到一定限制,因而需要对新的技术进行探索。在对这些因素分析的基础上,提出了微电网的保护策略：通过小波变换对电流行波进行分析判断故障位置,母线电压确定故障发生与否及扰动电压判断故障类型。利用SVPWM控制原理在Matlab/Simulink中使用SimPowerSystems搭建微电网的模型,并对孤岛运行模式下微电网不同的故障类型进行仿真分析,仿真结果表明所提出的保护策略在孤岛运行的方式下是有效的。 |
|---|---|
| AbstractList | 针对微电网的故障电流小、潮流双向性等特性,提出了适合微电网的保护策略并进行了仿真。传统的基于过电流的电网保护技术对于微电网的保护受到一定限制,因而需要对新的技术进行探索。在对这些因素分析的基础上,提出了微电网的保护策略：通过小波变换对电流行波进行分析判断故障位置,母线电压确定故障发生与否及扰动电压判断故障类型。利用SVPWM控制原理在Matlab/Simulink中使用SimPowerSystems搭建微电网的模型,并对孤岛运行模式下微电网不同的故障类型进行仿真分析,仿真结果表明所提出的保护策略在孤岛运行的方式下是有效的。 TM71; 针对微电网的故障电流小、潮流双向性等特性，提出了适合微电网的保护策略并进行了仿真。传统的基于过电流的电网保护技术对于微电网的保护受到一定限制，因而需要对新的技术进行探索。在对这些因素分析的基础上，提出了微电网的保护策略：通过小波变换对电流行波进行分析判断故障位置，母线电压确定故障发生与否及扰动电压判断故障类型。利用SVPWM控制原理在Matlab/Simulink中使用SimPowerSystems搭建微电网的模型，并对孤岛运行模式下微电网不同的故障类型进行仿真分析，仿真结果表明所提出的保护策略在孤岛运行的方式下是有效的。 |
| Abstract_FL | Based on the characteristics of microgrid, for example small fault current, the bidirectional powerflow, etc, a protection scheme is proposed and simulated. The traditional protection scheme based on overcurrent has some restrictions on the microgrid protection, thus a novel protection needs to be explored. Based on the analysis of the above factors, a microgrid protection scheme is proposed. Wavelet transform is used in analyzing current traveling waves to identify faulted location, the bus bar voltages are used to determine whether a fault happened or not, and disturbance voltages are used to determine fault types. A microgrid model is established using SVPWM with SimPowerSystems in Matlab/Simulink, and different faults in the islanded microgrid are simulated, and the result shows that the proposed protection is valid in an islanded operating mode. |
| Author | 李练兵 张晓娜 张家安 孙鲁滨 |
| AuthorAffiliation | 河北工业大学控制科学与工程学院,天津300130 |
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| Author_FL | LI Lian-bing ZHANG Xiao-na SUN Lu-bin ZHANG Jia-an |
| Author_FL_xml | – sequence: 1 fullname: LI Lian-bing – sequence: 2 fullname: ZHANG Xiao-na – sequence: 3 fullname: ZHANG Jia-an – sequence: 4 fullname: SUN Lu-bin |
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| Keywords | 电流行波 failure characteristics 小波变换 DG wavelet transform 故障特性 SVPWM current traveling wave 微电网保护 microgrid protection |
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| Notes | Based on the characteristics of microgrid, for example small fault current, the bidirectional powerflow, etc, a protection scheme is proposed and simulated. The traditional protection scheme based on overcurrent has some restrictions on the microgrid protection, thus a novel protection needs to be explored. Based on the analysis of the above factors, a microgrid protection scheme is proposed. Wavelet transform is used in analyzing current traveling waves to identify faulted location, the bus bar voltages are used to determine whether a fault happened or not, and disturbance voltages are used to determine fault types. A microgrid model is established using SVPWM with SimPowerSystems in Matlab/Simulink, and different faults in the islanded microgrid are simulated, and the result shows that the proposed protection is valid in an islanded operating mode. 41-1401/TM LI Lian-bing, ZHANG Xiao-na, ZHANG Jia-an, SUN Lu-bin （Control Science and Engineering, Hebei University of Technology, Tianjin 300130, China） DG; microg |
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| Snippet | 针对微电网的故障电流小、潮流双向性等特性,提出了适合微电网的保护策略并进行了仿真。传统的基于过电流的电网保护技术对于微电网的保护受到一定限制,因而需要对新的技术进... TM71; 针对微电网的故障电流小、潮流双向性等特性，提出了适合微电网的保护策略并进行了仿真。传统的基于过电流的电网保护技术对于微电网的保护受到一定限制，因而需要对新... |
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| SubjectTerms | DG SVPWM 小波变换 微电网保护 故障特性 电流行波 |
| Title | 基于电流行波的微电网保护策略 |
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