Abstract

Subsystem partitioning for power system black-start considering restoration reliability

Highlights

  • The black-start in power system is the procedure to recover from a total or partial blackout which has caused an extensive loss of power supplies

  • Reference [6] applies the taboo search algorithm based black-start subsystem partitioning strategy, and it integrates the important indexes of the path between nodes and blackstart source, and the weighted network is established

  • In the partitioning process, they all fail to take into account the possibility of system restoration failure mainly caused by the uncertainty of transmission lines and the complexity of network structures which greatly affects the reliability of system restoration

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Summary

Introduction

The black-start in power system is the procedure to recover from a total or partial blackout which has caused an extensive loss of power supplies. Subsystem partitioning for power system black-start considering restoration reliability rate of each transmission line in the network is set up. Based on the disjoint of minimal path sets, the different reliability from a chosen node to be restored to different black-start units or charged areas is calculated. The BDD method is used to disjoin the minimal path sets between black-start source and the node to be restored and the node reliability is computed directly. Two points need to be clarified: first, the maximum limit d in this paper is determined by the shortest path between two nodes; second, the MPS obtained by this method, does not consist of all the minimal paths between the starting node and the target node, it is just a set of selective paths with relatively shorter restoration time. Considering the urgency of network restoration and the starting time limits of some generator units, the decision made above is reasonable

Determining the restoration successful rate of a node
Automatic partitioning of power network
Conclusion

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