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Cuckoo algorithm-based power distribution network maximum power supply capability evaluation method and system

A technology of maximum power supply capacity and power supply capacity, applied in the direction of system integration technology, information technology support system, calculation, etc., can solve the problem that the power supply capacity of distribution network is difficult to reach the maximum, etc.

Pending Publication Date: 2022-02-25
刘欢 +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the perspective of theoretical analysis, the maximum power supply capacity of the distribution network should not be greater than the difference between the sum of the power supply capacity in the distribution network and a single maximum capacity transformer, but due to the limitations of load distribution and tie line capacity, The power supply capacity of the distribution network is difficult to reach the maximum theoretical value

Method used

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  • Cuckoo algorithm-based power distribution network maximum power supply capability evaluation method and system
  • Cuckoo algorithm-based power distribution network maximum power supply capability evaluation method and system
  • Cuckoo algorithm-based power distribution network maximum power supply capability evaluation method and system

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Effect test

Embodiment 1

[0066] A method for evaluating the maximum power supply capacity of a distribution network based on the cuckoo algorithm, characterized in that it comprises the following steps:

[0067] Step 1) Establish a distribution network power supply capacity assessment model;

[0068] Step 2) Based on the actual power grid structure, set the group number N, the dimension D and the maximum number of iterations of the random solution, and the generated random solution forms an N×D first-order random solution matrix;

[0069] Step 3) Start iteration after generating the first set of random solutions, input the generated random solutions into the distribution network power supply capacity evaluation model, and obtain N distribution network power supply capabilities;

[0070] Real-time judgment whether the number of iterations reaches the maximum number of iterations, if it reaches the preset upper limit of iterations, the power supply capacity of the distribution network at this time, the ...

Embodiment 2

[0075] Distribution Network Power Supply Capability Evaluation Model

[0076] The distribution network has a large power supply area and a long power supply radius, and it needs to meet multiple constraints when supplying power. Therefore, the solution of the maximum power supply capacity of the distribution network is essentially an optimization problem under multiple constraints. The maximum power supply capacity of the distribution network depends on the maximum load that each substation in the distribution network area can bear. Based on this, the solution of the maximum power supply capacity of the distribution network can be transformed into the problem of solving the maximum load that each main transformer can carry. The advantage brought by this transformation is that it is no longer necessary to solve the load size of each load point, only the maximum load that can be carried by each main transformer can be solved, and the number of variables in the solution process ...

Embodiment 3

[0127] A method for evaluating the maximum power supply capacity of a distribution network based on the cuckoo algorithm, specifically implemented according to the following steps:

[0128] Step 1, establish the distribution network power supply capacity assessment model according to formula (1)-formula (9);

[0129] Step 2. Set the number N of random solution groups, the dimension D of the solution and the maximum number of iterations M, and directly generate an N×D order random solution matrix;

[0130] Step 3. Judging whether the number of iterations reaches the upper limit M, if the upper limit is not reached, continue to perform the remaining steps, and if it reaches the upper limit, output TSC;

[0131] Step 4. Carry out Levi's flight on the basis of random numbers to obtain the first set of random solution matrix I, perform boundary processing on the random solutions, assign the value greater than 1 to 0, and substitute it into the power supply capacity evaluation model...

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Abstract

The invention discloses a cuckoo algorithm-based power distribution network maximum power supply capability evaluation method and system, and belongs to the technical field of power distribution network power supply capability evaluation. Firstly, a power distribution network power supply capability evaluation model is established based on various constraint conditions of a power distribution network, according to the model, the maximum power supply capacity is calculated on the premise that the solving result meets the safety constraint of the power distribution network, in order to avoid the situation of local optimum due to improper parameter setting, a random solution is substituted into the evaluation model for verification, the random solution meeting the constraint condition is reserved, iterative solving is conducted through the cuckoo algorithm, and the evaluation model is optimized based on the core idea that the random solution is substituted into the power distribution network power supply capability evaluation model for verification and the random solution meeting the constraint is reserved, so that the situation of local optimum due to improper parameter setting is avoided. Example verification results show that the power distribution network power supply capability evaluation model established by the invention can effectively evaluate the maximum power supply capability of the power distribution network.

Description

technical field [0001] The invention belongs to the technical field of distribution network power supply capacity evaluation, and relates to a method and system for evaluating the maximum power supply capacity of a distribution network based on a cuckoo algorithm. Background technique [0002] With the rapid growth of residential electricity consumption, the operating pressure of distribution network is increasing day by day. At present, urban land use is relatively tight, and new substations are subject to various constraints, making site selection difficult. Therefore, how to improve the power supply capacity of the distribution network on the premise of ensuring the safe and stable operation of the distribution network has become an urgent problem to be solved. [0003] The maximum power supply capacity (TSC) of the distribution network refers to the maximum load that the distribution network can bear under the premise of satisfying the distribution security operation con...

Claims

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Application Information

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IPC IPC(8): H02J3/00G06Q10/06G06Q50/06
CPCH02J3/00G06Q10/0639G06Q50/06H02J2203/10H02J2203/20Y02E40/70Y04S10/50
Inventor 刘欢王智峰张宇翔侯菲陈浩
Owner 刘欢
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