Day-ahead reactive power optimization method based on branch-bound method and primal-dual interior point method

A technology of branch and bound method and optimization method, applied in reactive power compensation, reactive power adjustment/elimination/compensation, AC network circuit, etc., can solve the problem of difficult to achieve reasonable control of control equipment

Active Publication Date: 2015-06-10
HOHAI UNIV
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This kind of method artificially fixes the action time of the equipment, a...

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  • Day-ahead reactive power optimization method based on branch-bound method and primal-dual interior point method
  • Day-ahead reactive power optimization method based on branch-bound method and primal-dual interior point method
  • Day-ahead reactive power optimization method based on branch-bound method and primal-dual interior point method

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[0062] The technical solution of the invention will be described in detail below in conjunction with the accompanying drawings.

[0063] A day-ahead reactive power optimization method based on the branch and bound method and the primal dual interior point method involved in the present invention, its algorithm flow is as follows figure 1 shown, including the following steps:

[0064] Step 1. Considering the adjacent period adjustment gear limit and the whole day adjustment frequency limit of the discrete control equipment, add them as constraints into the optimization model, and establish the mathematical model of the day-ahead reactive power optimization problem:

[0065] min Σ t = 1 N T ...

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Abstract

The invention discloses a day-ahead reactive power optimization method based on a branch-bound method and a primal-dual interior point method and belongs to the reactive power optimization technology field of a power system. The method is characterized in that constraints of discrete variables in each period, adjusting gears in adjacent period and whole-day operation times are considered, and primary problems are branched and combined with branched branch-cutting strategies according to the periods, so that all discrete variables gradually approach to discrete values and meet the coupling constraints among the period; the primary problems are decomposed into a series of single-period reactive power optimization sub-problems only containing continuous variables after being branched according to the periods, the sub-problems are solved by adopting the primal-dual interior point method, and the calculated amount is reduced. The day-ahead reactive power optimization method is excellent in convergence, high in reliability and steady in calculation result.

Description

technical field [0001] The invention discloses a day-ahead reactive power optimization method based on a branch and bound method and a primal dual interior point method, and belongs to the technical field of reactive power optimization of electric power systems. Background technique [0002] The current reactive power optimization problem is essentially a large-scale nonlinear dynamic mixed integer programming problem. The existence of a large number of discrete control variables and coupling constraints between time periods makes it very difficult to solve. Currently, there are mainly four methods for solving reactive power optimization: (1) Simultaneous solution method. Document 1 "Dynamic Reactive Power Optimization Algorithm Considering the Constraints on the Number of Actions of Control Equipment" (Proceedings of the Chinese Society for Electrical Engineering, 2004, Vol. 24, No. 3, Page 34) describes the limit of the number of actions of discrete control equipment as an...

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Application Information

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IPC IPC(8): H02J3/18
CPCH02J3/18H02J2203/20Y02E40/30
Inventor 赵晋泉居俐洁戴则梅陈刚
Owner HOHAI UNIV
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