Allocation type solar power grid-connected power generation control method based on wireless network

A wireless network, distributed technology, applied in the direction of photovoltaic power generation, control/regulation system, and regulation of electrical variables, etc., can solve the problems of difficult matrix acquisition, failure to consider the problem of fair distribution of resources in photovoltaic solar energy systems, and failure to consider the problem of power backflow

Inactive Publication Date: 2015-01-07
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0004] 1) The problem of power backflow is not considered
[0005] 2) The problem of fair resource allocation of different photovoltaic solar energy systems is not considered
[0007] 1) The problem of power backflow is not considered
[0008] 2) The adjacency matrix of the distribution network is required, but in practice this matrix is ​​difficult to obtain

Method used

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  • Allocation type solar power grid-connected power generation control method based on wireless network
  • Allocation type solar power grid-connected power generation control method based on wireless network
  • Allocation type solar power grid-connected power generation control method based on wireless network

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Embodiment Construction

[0044] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the protection scope of the present invention should not be limited thereby.

[0045] 1. Each terminal node of the photovoltaic solar energy system collects local status information, including the power generated by the photovoltaic solar energy system Power Consumed by Photovoltaic Solar System It is transmitted to the central controller through a dedicated network and protocol.

[0046] 2. The central controller calculates the total power that can be allocated by the network based on the collected information P S = P 0 - P 0 lb + Σ i = 1 n ( P G ...

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Abstract

An allocation type solar power grid-connected power generation control method based on the wireless network includes 1, utilizing inverters arranged in solar photovoltaic systems, and collecting the local information of the solar photovoltaic systems; 2, allowing a central controller to calculate the network total allocated power PS; 3, allowing the central controller to transmit the calculated allocated power Pi to the corresponded solar photovoltaic systems, and allowing the corresponded inverters to adjust fresh power points of the solar photovoltaic systems according to the received allocated power Pi; 4, allowing the central controller to detect whether the network state meets optional one of three boundary conditions or not, and calculating fresh power indexes and transmitting to terminal nodes of the solar photovoltaic systems. By the aid of the method, the problems of over voltage, power upstream and fair resource allocation of the existing system are solved.

Description

technical field [0001] The invention relates to the technical field of power point control of photovoltaic solar energy systems in power grids, in particular to a method for realizing distributed solar grid-connected power generation control based on wireless networks Background technique [0002] Voltage attenuation technology is a method of locally regulating the voltage of photovoltaic solar energy systems. It does not require information interaction in the network and knowledge of the topology of the grid. Simply reducing the output power of photovoltaic solar energy systems through inverters can effectively solve the problem. Overvoltage problem. [0003] This method has the following disadvantages: [0004] 1) The problem of power backflow is not considered [0005] 2) The problem of fair resource allocation of different photovoltaic solar energy systems is not considered [0006] Droop controls the inverter, which can realize voltage regulation and fair distributio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/67
CPCY02E10/56
Inventor 王旭东皮宜博
Owner SHANGHAI JIAO TONG UNIV
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