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Distributed photovoltaic cluster control method and device

A distributed photovoltaic and cluster control technology, applied in photovoltaic power generation, circuit installations, sustainable buildings, etc., can solve problems such as low efficiency, difficulty in solving, and low precision

Inactive Publication Date: 2019-04-16
CHINA ELECTRIC POWER RES INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the problems of high difficulty in solving, low efficiency, low precision, and easy to fall into local optimum in the above-mentioned prior art, the present invention provides a distributed photovoltaic cluster control method and device, which have low difficulty in solving, high efficiency, high precision, Can effectively find the global optimal solution

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  • Distributed photovoltaic cluster control method and device

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Embodiment 1

[0155] Embodiment 1 of the present invention provides a distributed photovoltaic cluster control method, the specific flow chart is as follows figure 1 As shown, the specific process is as follows:

[0156] S101: Obtain the active power of the distributed photovoltaic cluster and the operation data of the distribution network;

[0157] S102: Bring the active power of the distributed photovoltaic cluster and the operation data of the distribution network into the pre-built mixed integer second-order cone programming model;

[0158] S103: Use a solver to solve the model, and control the distributed photovoltaic cluster based on the calculation result;

[0159] The above mixed integer second-order cone programming model is constructed based on the active power of distributed photovoltaic clusters and the operation data of distribution network.

[0160] Since the mixed integer second-order cone programming model is obtained by transforming the rolling optimization control model ...

Embodiment 2

[0228]Based on the same inventive concept, Embodiment 2 of the present invention provides a distributed photovoltaic cluster control device, including an acquisition module and a solution module. The specific functions of the above modules are described in detail below:

[0229] The obtaining module is used to obtain the active power of the distributed photovoltaic cluster and the operation data of the distribution network;

[0230] Bring-in module, used to bring the active power of distributed photovoltaic clusters and distribution network operation data into the pre-built mixed integer second-order cone programming model;

[0231] The solving module is used to solve the model by using the solver, and control the distributed photovoltaic cluster based on the calculation result;

[0232] The mixed integer second-order cone programming model is constructed based on the active power of distributed photovoltaic clusters and the operation data of distribution network.

[0233] Th...

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Abstract

The invention provides a distributed photovoltaic cluster control method and device. The distributed photovoltaic cluster control method comprises the steps of acquiring an active power of a distributed photovoltaic cluster and running data of a power distribution network; solving a hybrid integer second-order cone planning model by a solver, and controlling the distributed photovoltaic cluster according to a calculation result; and building the hybrid integer second-order cone planning model according to the active power of the distributed photovoltaic cluster and the running data of the power distribution network so that global optimal solution with low difficulty, high efficiency and high accuracy can be effectively solved. With the distributed photovoltaic cluster control method provided by the technical scheme of the invention, the photovoltaic output fluctuation can be effectively handled, the running safety of the power distribution network is ensured, and local absorption of distributed photovoltaics is achieved. The distributed photovoltaic cluster control method provided by the technical scheme of the invention employs a second-order cone loosing method to convert a non-convex non-linear constraint in power flow constraint to linear constraint in the hybrid integer second-order cone planning model, and the calculation efficiency is greatly improved.

Description

technical field [0001] The invention relates to the field of new energy technologies, in particular to a distributed photovoltaic cluster control method and device. Background technique [0002] In recent years, distributed photovoltaics have shown the characteristics of continuous development and cluster grid connection. The large-scale cluster access of distributed photovoltaics has had a significant impact on the power flow distribution, power quality, operational reliability, and stability of the distribution network. Distributed photovoltaics can realize decoupling control of active and reactive power through the inverter, make full use of the reactive power adjustment capability of the inverter, and consider the existing various active and reactive power controllable adjustment equipment in the distribution network. On-load voltage regulating transformer, compensation capacitor bank, static var compensation device, energy storage device, distributed photovoltaic clust...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/18H02J3/46H02J3/06H02J3/28
CPCH02J3/383H02J3/06H02J3/18H02J3/28H02J3/46H02J2203/20Y02E70/30Y02B10/10Y02E10/56Y02E40/30
Inventor 张颖季宇盛万兴刘海涛吴鸣潘静
Owner CHINA ELECTRIC POWER RES INST
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