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Method for computing maximum access capacity of distributed power sources on basis of expansion second-order cone programming

A distributed power supply, second-order cone programming technology, applied in computing, electrical components, circuit devices, etc., can solve problems such as the inability to guarantee the global optimality of the solution, the surge in computing time, and the speed or accuracy that cannot meet the requirements at the same time. Avoid iteration and a large number of tests, increase calculation speed, and reduce the effect of solving difficulty

Active Publication Date: 2017-05-10
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD +1
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Problems solved by technology

Although traditional mathematical optimization methods can theoretically perform global optimization, there will be a "curse of dimensionality" problem when dealing with large-scale nonlinear problems in practice, and the calculation time often shows an explosive surge; A polynomial time bound, the calculation speed is fast, but only a local optimal solution can be obtained, and the global optimality of the solution cannot be guaranteed
Therefore, traditional mathematical optimization methods and heuristic algorithms cannot meet the requirements of speed or accuracy at the same time for solving such problems.

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  • Method for computing maximum access capacity of distributed power sources on basis of expansion second-order cone programming
  • Method for computing maximum access capacity of distributed power sources on basis of expansion second-order cone programming
  • Method for computing maximum access capacity of distributed power sources on basis of expansion second-order cone programming

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Embodiment Construction

[0036] The method for calculating the maximum access capability of a distributed power source based on extended second-order cone programming of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings.

[0037] The method for calculating the maximum access capacity of distributed power sources based on extended second-order cone programming of the present invention is used for the research on the maximum access capacity of distributed power sources in distribution networks, and can use solvers such as MOSEK, CPLEX, and GUROBI integrated on MATLAB. to solve. The invention adopts the CPLEX solver to solve the extended second-order cone programming problem, so as to figure 1 The improved IEEE 33 node test system shown is an example.

[0038] The method for calculating the maximum access capability of distributed power sources based on extended second-order cone planning proposed by the present invention is as follow...

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Abstract

The invention discloses a method for computing the maximum access capacity of distributed power sources on the basis of expansion second-order cone programming. The method includes inputting related information of power distribution networks and setting the computational accuracy and the maximum number of iteration of the maximum deviation of cone relaxation; judging whether the numbers of iteration exceed the maximum number of iteration or not; taking the maximum access capacity of the distributed power sources in systems into account according to the related information of the power distribution networks and building models for computing the maximum access capacity of the distributed power sources; converting the models for computing the maximum access capacity of the distributed power sources into second-order cone programming models according to standard forms of second-order cone programming; carrying out computation and solution by the aid of mathematical solvers for solving second-order cone programming, outputting solution results and judging whether the maximum deviation of cone relaxation meets given accuracy requirements or not; adding cutting plane constraints on the basis of the second-order cone programming models and integrally forming expansion second-order cone programming models. The method has the advantages that complicated nonlinear programming problems can be solved, tedious iteration and large quantities of tests can be omitted, and the optimal access schemes for the distributed power sources can be quickly obtained.

Description

technical field [0001] The invention relates to a method for calculating the maximum access capability of a distributed power source. In particular, it relates to a method for calculating the maximum access capacity of distributed power sources based on extended second-order cone programming. Background technique [0002] New energy and renewable energy are widely and densely connected to the distribution network in a distributed way. While meeting the energy demand of the power grid, its operation characteristics are greatly affected by the environment and have obvious randomness and volatility. It brings many problems to the operation and control of the distribution network, among which the two-way power flow and the voltage exceeding the limit are particularly serious. Moreover, the output and load of distributed power supply often show a negative correlation, resulting in large fluctuations in the voltage and power of the distribution network within a certain range. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/00H02J3/38G06F17/50
CPCG06F30/20H02J3/00H02J3/382H02J2203/20Y02E60/00
Inventor 刘志文董旭柱吴争荣陈立明王成山冀浩然李鹏宋关羽赵金利
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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