Power distribution system network reconstruction method based on safety domain
A power distribution system and network reconfiguration technology, applied in the direction of AC network circuits, information technology support systems, electrical components, etc., can solve the problems of slow calculation speed and increase the difficulty of network reconfiguration calculations, so as to improve the calculation speed and meet real-time requirements. The effect of monitoring and running
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Embodiment 1
[0031] A security domain-based power distribution system network reconfiguration method, the power distribution system network reconfiguration method includes the following steps:
[0032] 101: Construct the security index of the distribution system security domain according to the distribution system security domain and the security boundary equation;
[0033] 102: Obtain a network reconfiguration model according to the security index of the security domain of the power distribution system, reconstruct the distribution system network through the network reconfiguration model, and obtain the final switching state of the entire network.
[0034] Among them, the steps to construct the security index of the distribution system security domain according to the distribution system security domain and the security boundary equation are as follows:
[0035] Obtain the safety distance of a single feeder;
[0036] The average feeder safety distance and the minimum feeder safety distan...
Embodiment 2
[0044] The following combines specific test data and calculation formulas to describe in detail the operation process of a distribution system network reconfiguration method based on security domains. See the following description for details:
[0045] 201: Construct the distribution system safety domain and its safety boundary equation;
[0046] The distribution system safety domain DSSR is defined as satisfying the N-1 safe operation criterion and various other operating constraints (for example: Kirchhoff’s law constraints, power flow equation constraints, node voltage amplitude constraints or radiation structure operation constraints, when specifically implemented, The embodiment of the present invention does not limit this) the set of all working points W. Among them, the working point W is an n-dimensional vector composed of all load nodes of the distribution system, that is, the security domain of the distribution system is:
[0047] W=(F 1 , F 2 ,...,F i ,...,F n ...
Embodiment 3
[0097]A distribution network calculation example is used below to illustrate the embodiment of the present invention. The IEEE RBTS BUS4 modified by the calculation example: 1) The number of feeders and the scale of feeder connections are increased; 2) The load is slightly increased, reflecting the situation that the power grid is approaching the N-1 safety boundary under high-load operation; 3) The feeder and main transformer are adjusted Capacity, so that the safety of N-1 is the common constraint of the feeder and the main transformer; 4) The feeder F7 and F16 contain important loads and require a larger safety margin. The length of each line is 0.5km.
[0098] Table 1 Main Transformer Data
[0099]
[0100] Table 2 Feeder Data
[0101]
[0102] 1) Safety boundary calculation;
[0103] The safety boundary equation of the example is calculated as follows.
[0104] B D S S R ...
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