Automatic system fault handling method of distribution network containing a plurality of distributed power supplies

A technology for distribution network automation and system failure, applied in information technology support systems, electrical components, circuit devices, etc., can solve problems such as inability to meet fault handling, and achieve the effect of improving reliability

Inactive Publication Date: 2010-10-20
ZHEJIANG ELECTRIC POWER TEST & RES INST +1
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Problems solved by technology

[0013] However, with the continuous expansion of applications of Distributed Generators (DG), distributed power sources such as wind power, photovoltaics, energy storage, and micro-gas turbines are mostly connected to the distribution network directly or in the form of micro-grids (such as figure 2 As shown), in this way, the traditional distribution network has changed from a single-ended live operation

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  • Automatic system fault handling method of distribution network containing a plurality of distributed power supplies
  • Automatic system fault handling method of distribution network containing a plurality of distributed power supplies
  • Automatic system fault handling method of distribution network containing a plurality of distributed power supplies

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Experimental program
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Embodiment Construction

[0034] 1. The establishment of fast channel and peer-to-peer communication mechanism

[0035] The distribution network automation system adopts optical fiber multiplexing technology. In addition to the normal three teleprocessing functions, a relatively independent and virtual channel is established to handle fault diagnosis and isolation information.

[0036] The establishment of a dedicated channel is "virtual" and does not require a separate medium. In the communication of the optical fiber double-ring self-healing network, a TCP-based SOCKET connection can be established. figure 2 As shown in the power distribution system with distributed power sources, a relatively independent SOCKET connection will be established between adjacent FTUs. For example, FTU2.1 will establish connections with adjacent FTU1.2 and FTU2.2 respectively. Once a stable SOCKET connection is established After that, FTUs can transmit specific fault diagnosis related information (including power direction)...

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Abstract

The invention discloses an automatic system fault handling method of a distribution network containing a plurality of distributed power supplies. The output mode of traditional distribution network protection and feeder automation cannot meet the requirement on distribution network fault handling when a system containing a plurality of distributed power supplies works, and must be improved and perfected. The method establishes an independent fault information transmission channel with optical fiber Ethernet equipment through an SOCKET connection method on the basis of using light Ethernet communication; adopts a peer-to-peer communication mechanism, realizes the peer-to-peer communication between the fault information of terminal devices, and effectively solves the problems of production, feeder automation and the like under the circumstance of a looped network. The automatic system fault handling method of the distribution network containing a plurality of distributed power supplies has very good sensitivity, selectivity and quickness.

Description

Technical field [0001] The invention relates to the field of distribution network automation, in particular to a fault processing method for a distribution network automation system containing distributed multiple power sources. Background technique [0002] The operation and management mode of the conventional distribution network automation system mostly adopts a three-layer structure, namely: the main station layer of the distribution network, the sub-station layer of the distribution network, and the terminal layer of the distribution network. Different layers rely on the distribution network communication system. To exchange information. In terms of fault handling in the distribution network (Feeder Automation System, FA, the same below), the main station, sub-station and terminal of the distribution network each perform different functions. In one word: the distribution network terminal realizes To obtain fault information, the sub-station of the distribution network reali...

Claims

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Application Information

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IPC IPC(8): H02J13/00
CPCY04S40/124Y02B90/2638Y02B90/20
Inventor 赵波徐文张雪松童杭伟徐玮韡
Owner ZHEJIANG ELECTRIC POWER TEST & RES INST
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