This paper proposes a distributed computing architecture for protection functions within a digital substation, in order to achieve data redundancy, functional redundancy and functional coordination. This can be realiz...This paper proposes a distributed computing architecture for protection functions within a digital substation, in order to achieve data redundancy, functional redundancy and functional coordination. This can be realized primarily due to the advances in digital and communications technology within a substation, particularly the process bus which allows data sharing between Intelligent Electronic Devices(IEDs). Results of backup protection investigation, using redundant information both within the substation and on a wide area basis, are then presented. A campus microgrid protection scheme was used as a test case to demonstrate the concept of protection using shared information. Finally, the paper proposes a multi-agent system as a simulation platform, which can be used to further demonstrate some of these concepts.展开更多
中性线冲击电容器的主要作用是降低低次谐波和抑制雷电冲击,但是当冲击电压达到一定值时,能量会在短时间内大量积聚,导致电容器内部绝缘击穿并爆炸。本文分析了某±500 k V直流换流站双极中性母线暂态过电压对双极冲击电容器组绝缘...中性线冲击电容器的主要作用是降低低次谐波和抑制雷电冲击,但是当冲击电压达到一定值时,能量会在短时间内大量积聚,导致电容器内部绝缘击穿并爆炸。本文分析了某±500 k V直流换流站双极中性母线暂态过电压对双极冲击电容器组绝缘性能的影响,通过放电故障现象、特征分析和解体试验,论证了双极中性母线过电压及绝缘配合设计、暂态过电压对中性母线冲击电容器绝缘劣化影响等问题,并提出了防范措施,对直流换流站安全运行具有重要借鉴意义。展开更多
基金supported by the National Natural Science Foundation of China under grant number 51277009
文摘This paper proposes a distributed computing architecture for protection functions within a digital substation, in order to achieve data redundancy, functional redundancy and functional coordination. This can be realized primarily due to the advances in digital and communications technology within a substation, particularly the process bus which allows data sharing between Intelligent Electronic Devices(IEDs). Results of backup protection investigation, using redundant information both within the substation and on a wide area basis, are then presented. A campus microgrid protection scheme was used as a test case to demonstrate the concept of protection using shared information. Finally, the paper proposes a multi-agent system as a simulation platform, which can be used to further demonstrate some of these concepts.
文摘中性线冲击电容器的主要作用是降低低次谐波和抑制雷电冲击,但是当冲击电压达到一定值时,能量会在短时间内大量积聚,导致电容器内部绝缘击穿并爆炸。本文分析了某±500 k V直流换流站双极中性母线暂态过电压对双极冲击电容器组绝缘性能的影响,通过放电故障现象、特征分析和解体试验,论证了双极中性母线过电压及绝缘配合设计、暂态过电压对中性母线冲击电容器绝缘劣化影响等问题,并提出了防范措施,对直流换流站安全运行具有重要借鉴意义。
