Interconnected power distribution system comprising flexible multi-state switch and reliable operation evaluation method

Abstract

The invention discloses an interconnected power distribution system containing a flexible multi-state switch and a reliable operation evaluation method, and belongs to the field of intelligent power distribution systems. The interconnection power distribution system containing the flexible multi-state switch is mainly composed of the flexible multi-state switch FMSS composed of fully-controlled power electronic devices, an MMC is used as a commutation port to form a multi-port FMSS device, and the multi-port FMSS device comprises a central regulation and control system and three ports of a port MMC1, a port MMC2 and a port MMC3. The system totally has four sub-modules, and the sub-module MMC adopts the FBSM and HBSM series-parallel configuration to form a topological structure of the sub-module MMC, so that the electric energy quality of the multi-terminal flexible interconnection power distribution system is improved, and the loss of a converter is reduced. The reliability evaluationis performed on the interconnected power distribution system by using a sequential Monte Carlo method, and the quantitative analysis is performed on the positive and negative benefits of the access of the flexible switch device, so that the decision support is provided for the application of the multi-terminal flexible switch in a power distribution network.

Description

technical field [0001] The invention belongs to the field of intelligent power distribution systems, in particular to an interconnected power distribution system with flexible multi-state switches and a reliable operation evaluation method. Background technique [0002] Flexible multi-state switch FMSS (Flexible Multi-State Switch), as a typical power electronic device, can replace the contact switch at the contact position of the traditional feeder to realize the "soft connection" between the feeder lines, and multiple distribution network feeder lines use it as the connection center As a new form of distribution network organization, the multi-terminal flexible interconnection distribution system formed by interconnection has become a research hotspot in the field of intelligent power distribution. Compared with the traditional distribution network, the multi-terminal flexible interconnection distribution system with FMSS is more "flexible". , can realize the flexible flo...

AI Technical Summary

Problems solved by technology

The addition of FMSS changes the topology of the system, increases the complexity of distribution network operation and fault handling, and makes the reliability assessment of multi-terminal flexible interconnection distribution systems with FMSS a huge challenge.

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