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Power distribution network planning method considering reliability constraint

A distribution network planning and reliability technology, applied in the direction of electrical components, circuit devices, AC network circuits, etc., can solve conservative and unstable problems

Active Publication Date: 2019-09-06
TSINGHUA UNIV
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Problems solved by technology

Clearly, heuristics can only provide decision makers with relatively suboptimal solutions, which can be conservative and unstable

Method used

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  • Power distribution network planning method considering reliability constraint
  • Power distribution network planning method considering reliability constraint
  • Power distribution network planning method considering reliability constraint

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Embodiment Construction

[0065] A distribution network planning method considering reliability constraints proposed by the present invention will be further described in detail below in conjunction with specific embodiments.

[0066] A distribution network planning method considering reliability constraints proposed by the present invention includes the following steps:

[0067] 1) Construct a distribution network planning model considering reliability constraints, which is composed of objective functions and constraints; the details are as follows:

[0068] 1-1) Determine the objective function of the model;

[0069] The objective function of the model is to minimize the investment cost of the distribution network, as shown in formula (1):

[0070]

[0071] where C I investment cost for the distribution network, is the cost of type a wire, Whether to create a wire of type a for branch ij ( for new, is not newly built), Υ represents the set of all branches, Λ B for the set of all wire ty...

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Abstract

The invention provides a power distribution network planning method considering reliability constraints, and belongs to the technical field of power system planning and evaluation. According to the method, a power distribution network planning model composed of an objective function and constraint conditions is constructed; the reliability index is incorporated into the power distribution networkplanning problem as a constraint, and the reliability index is accurately described through the coupling relationship between the constraints, so that the solution obtained by solving the power distribution network planning model inevitably meets the set reliability constraint, and an optimal power distribution network planning scheme is obtained. According to the method, a power grid planning scheme meeting the reliability constraint is directly obtained instead of adopting an iterative solution mode of firstly planning and then verifying the reliability index in a traditional power distribution network planning method, so that the optimality of the planning scheme is ensured, and meanwhile, the calculation time of power distribution network planning is greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of power system planning and evaluation, and in particular relates to a distribution network planning method considering reliability constraints. Background technique [0002] In distribution network planning, reliability is an important index to evaluate the performance of the planned network. In the field of distribution network planning, reliability refers to the ability of the power system to continuously meet the quantity and quality of power demand of end users. Distribution network reliability mainly includes the following indicators: customer interruption frequency (CIF), customer interruption duration (CID), system average annual interruption frequency index (SAIFI )), system average interruption duration index (SAIDI) and expected energy not supplied (EENS)). [0003] Since the calculation process of the reliability index is expressed as the probability time of statistical failure events, in the ...

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Application Information

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IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06
CPCG06Q10/04G06Q10/06393G06Q10/0637G06Q50/06G06F30/13G06Q10/0631H02J3/00H02J2203/10H02J2203/20Y04S10/50Y04S40/20Y02E40/70Y02E60/00G05B19/042G05B2219/2639
Inventor 吴文传张伯明栗子豪孙宏斌王彬郭庆来
Owner TSINGHUA UNIV
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