An optimization method for power supply construction

An optimization method and power supply technology, applied in the energy industry, electrical components, circuit devices, etc., can solve the problems of heavy or light load of the line, poor economic operation of the power grid, and reduced power grid security, so as to achieve reasonable utilization and ensure safety. The effect of stable operation and guarantee of power quality

Active Publication Date: 2021-05-04
STATE GRID ZHEJIANG ELECTRIC POWER +1
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Problems solved by technology

The single pursuit of economy in this method will cause heavy load or light load of individual lines. Heavy load lines will lead to a decrease in the safety of the power grid, and light load lines will lead to poor economic operation of the power grid.

Method used

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  • An optimization method for power supply construction
  • An optimization method for power supply construction
  • An optimization method for power supply construction

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Embodiment Construction

[0050] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0051] Such as figure 1 As shown, the present invention includes the following steps.

[0052] S01: It is determined to evaluate branch load fluctuations based on the load ratio of the maximum number of branches in the power system. Therefore, the objective function of the power supply planning optimization model is as follows:

[0053]

[0054] In the formula, x is the decision vector variable; f(x) is the objective function; P i is the branch load ratio of branch i; is the load ratio of the maximum branch number of branch i. By setting the load ratio to reflect the branch load fluctuation limit, the occurrence of heavy load and light load can be effectively avoided.

[0055] S02: Inheriting the traditional power planning's node active power and reactive power balance constraint h(x)=0, generally a node power balance constra...

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Abstract

The invention discloses a power supply construction optimization method, which relates to the field of power supply construction optimization. At present, the optimization of power supply construction often takes the minimum total cost or annual cost as the objective function. The single pursuit of economy in this method will cause heavy load or light load on individual lines. loading phenomenon. The present invention includes the steps of: designing an objective function with the maximum branch load ratio as the target; determining the power supply planning constraints; determining the total installed capacity index required by the power system in each planning level year according to the energy development policy, and generating new grid-connected boundary condition constraints; establishing Power supply construction optimization model based on policy uncertainty; the primal-dual interior point method is used to solve the power supply construction optimization model; and the power supply construction optimization scheme is obtained. This technical solution uses the load ratio of the maximum number of branches in the power system as the objective function to evaluate branch load fluctuations, effectively avoiding the occurrence of heavy and light loads on the line, and adding new grid-connected boundary conditions to ensure safe and stable operation of the power system and power consumption. quality.

Description

technical field [0001] The invention relates to the field of power supply construction optimization, in particular to a power supply construction optimization method. Background technique [0002] At present, the commonly used method for power construction optimization is to take the minimum total cost or annual cost as the objective function. The single pursuit of economy in this method will cause heavy load or light load of individual lines. Heavy load lines will lead to a decrease in the safety of the power grid, and light load lines will lead to poor economic operation of the power grid. Contents of the invention [0003] The technical problem to be solved and the technical task proposed by the present invention are to improve and improve the existing technical solutions, and to provide an optimization method for power supply construction, so as to alleviate the problems caused by the single pursuit of economy in the existing power supply construction optimization meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00H02J3/38
CPCH02J3/00H02J3/381H02J2203/20Y02P80/10
Inventor 兰洲孙飞飞杨升峰沈志恒鲍威朱虹
Owner STATE GRID ZHEJIANG ELECTRIC POWER
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