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Power source construction optimization method based on policy uncertainty

An uncertainty and optimization method technology, applied in the direction of electrical components, energy industry, circuit devices, etc., can solve problems such as heavy load or light load of lines, reduced safety of power grid, poor economic operation of power grid, etc., to achieve reasonable utilization rate, Guarantee the effect of safe and stable operation and power quality

Active Publication Date: 2019-02-15
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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  • Power source construction optimization method based on policy uncertainty
  • Power source construction optimization method based on policy uncertainty
  • Power source construction optimization method based on policy uncertainty

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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] like 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 constraint,...

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Abstract

The invention discloses a power source construction optimization method based on policy uncertainty, and relates to the field of power source construction optimization; at present, the power source construction optimization often takes the minimum total cost or the minimum annual cost as a target function, and the phenomena of heavy load or light load of individual lines can be caused due to single pursuit of economic efficiency of the method. The method comprises the following steps of designing a target function by taking the maximum branch load ratio as a target; determining power source planning constraints; determining the total installed capacity index required by each planned level year electric power system according to the energy development policy, and generating a new grid-connected boundary condition constraint; establishing a power source construction optimization model based on policy uncertainty; adopting a primal-dual interior point method to solve the power source construction optimization model; and obtaining a power source construction optimization scheme. By virtue of the technical scheme, the maximum branch load ratio of the electric power system is taken as the target function to evaluate the branch load fluctuations, so that the occurrence of line heavy load and light load is effectively avoided, and the new grid-connected boundary condition constraint isadded, therefore safe and stable operation and electric energy quality of the electric power system are guaranteed.

Description

technical field [0001] The invention relates to the field of power supply construction optimization, in particular to a policy uncertainty-based 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 perfect and improve the existing technical solutions, and to provide a power supply construction optimization method based on policy uncertainty, so as to alleviate the single pursuit of existing power supply construction optimiz...

Claims

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Application Information

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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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