Power distribution network reconstruction calculating method based on OBDD (ordered binary decision diagram)
A technology of distribution network reconstruction and binary decision diagram, applied in the field of electric power, can solve the problems of local structural defects of the power grid, complex neural network algorithms, and high requirements for computing conditions, and achieves the maximum consumption of distributed power sources and memory occupation. The effect of low power supply and high reliability of power supply
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Embodiment 1
[0062] After a fault occurs in the distribution network, taking reducing the power loss risk level of the entire distribution network as an example, the specific process of using the technical solution of this application is as follows: Figure 5 shown.
[0063] Phase 1: Build the objective function
[0064] Construct the objective function: such as formula (1). Among them, n Load is the total number of distribution network load nodes, λ k is the importance weight of node k, W i is the outage power of node i.
[0065]
[0066] The second stage: Initialize the OBDD model of the distribution network
[0067] 1) Get the system status. Including the total number of nodes N n , the on-off state of each switch branch, the load power of each node, the power of distributed power supply, the weight of each load node, etc. Sensitive loads are load nodes with uninterruptible power supply, load nodes at the end of feeders connected to distributed power sources, and other load n...
Embodiment 2
[0087] In view of the structural shortcomings of the existing power grid and the problems exposed in the reconstruction process after the distribution network fails, the reconstruction of the distribution network under normal operation mode is envisaged, such as Image 6 shown.
[0088] Phase 1: Build the objective function
[0089] Establish the minimum objective function F of network loss under normal operation mode 1 , the minimum objective function F of voltage fluctuation rate in normal operation mode 2 , The objective function F of the maximum consumption degree of distributed power generation 3 . Then the objective function is set up as (7), where λ is the weight of each objective function, and the sum of the weights is 1.
[0090] F=λ 1 f 1 +λ 2 f 2 +λ 3 f 3 (7)
[0091] The second stage: Initialize the OBDD model of the distribution network
[0092] Add or change the contact switch between distribution feeders and set it as a Boolean variable; add or chan...
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