Photovoltaic micro power source control system for micro grid

A micro-power control and micro-power technology, applied in photovoltaic power generation, photovoltaic modules, battery circuit devices, etc., can solve the problem of grid-connected research without photovoltaic micro-power, and achieve the effects of environmental protection, high-quality power supply, and stability assurance

Inactive Publication Date: 2010-04-21
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, domestic and foreign research on micro-power in micro-grids mostly focuses on the general control of micro-power grid-connected inverter systems and the stability of micro-grids, and there is no research specifically on photovoltaic micro-power grid-connected (micro-grids).

Method used

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  • Photovoltaic micro power source control system for micro grid
  • Photovoltaic micro power source control system for micro grid
  • Photovoltaic micro power source control system for micro grid

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing and embodiment the present invention will be further described;

[0030] Such as figure 1 It is a micro grid photovoltaic micro power control system. It mainly includes photovoltaic micro-power main circuit and photovoltaic micro-power controller. The photovoltaic micro-power controller is connected to the main circuit through the driver board. The main circuit of photovoltaic micro power supply consists of photovoltaic cell array PV, diode D, battery pack, DC side capacitor C dc , inverter, reactor X and coupling transformer T, the main circuit of the photovoltaic micro power supply is connected to the micro grid and the load through the solid state switch STS. The photovoltaic cell array PV in the main circuit of the photovoltaic micro-power supply realizes energy conversion and converts solar energy into electric energy; the diode D is set to prevent the reverse current from being injected into the photovoltaic cell a...

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Abstract

The invention discloses a photovoltaic micro power source control system for a micro grid, which comprises a photovoltaic micro power source main circuit which respectively accesses the micro grid and a load through a solid-state switch STS, and a photovoltaic micro power source controller which is connected with the photovoltaic micro power source main circuit through a drive board, wherein the photovoltaic micro power source controller comprises a highest power spot tracking control module, an active and passive power computation module, a storage battery charging and discharging control module, a power angle control module, a passive power-voltage control module and a PWM generator. The photovoltaic micro power source control system for the micro grid specially controls a photovoltaic micro power source to connect into the micro grid, and ensures the stability so as to effectively realize the high-efficient, environment-friendly and high-quality power supplying micro grid and beneficially complement a large power system.

Description

technical field [0001] The invention relates to a distributed power supply and a microgrid, in particular to a microgrid photovoltaic micropower control system. Background technique [0002] Distributed power generation, also known as distributed power generation or distributed energy supply, generally refers to the power generation (energy supply) method that relatively small power generation devices (generally below 50MW) are scattered and arranged at the user (load) site or near the user. The flexible and decentralized characteristics of distributed power generation are well adapted to the decentralized power demand and resource distribution, delaying the huge investment required for the upgrading of transmission and distribution networks. be improved. [0003] Although distributed power generation has outstanding advantages, there are many problems in itself, such as high access cost and difficult control of single-machine distributed power generation. In addition, dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02N6/00H02J7/00H02S40/30H02S40/38
CPCY02E10/58Y02E10/563Y02E10/56Y02E70/30Y02P80/14
Inventor 罗安彭双剑于力吕志鹏兰征吕文坤蔡平康珍周贤正
Owner HUNAN UNIV
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