Robust optimization evaluation method for reference power grid considering load uncertainty
An uncertain and robust optimization technology, applied in the electrical field, can solve problems such as difficulty in clarifying the investment direction of power grid planning
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[0059] Such as figure 1 As shown, a reference grid robust optimization evaluation method considering load uncertainty, specifically includes the following steps:
[0060] (1) Given the parameters of the current power grid, the load forecast interval values in each time period in the forward-looking time scale, and the candidate branch scheme of the planned network in the future;
[0061] (2) Form the system node injection transfer factor matrix according to the system branch reactance and the node branch correlation;
[0062] The expression of node injection transfer factor array is:
[0063] ψ=B L A(A T B L A) -1 (1)
[0064] Among them, B L is the branch susceptance diagonal matrix, A is the node-branch correlation matrix, and the superscript "T" marks the transpose of the matrix. Inject the element ψ in the transfer factor matrix ψ l,i Indicates the sensitivity factor of the transmission power of branch l to the injection power of node i.
[0065] (3) Consider ...
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