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Photovoltaic storage charged micro-grid control method

A control method and micro-grid technology, applied in the direction of photovoltaic power generation, electrical components, energy storage, etc., can solve problems such as the impact on the operation of the distribution network, and achieve the effect of reducing operating pressure, reducing pressure, enhancing safety, stability, and power supply quality

Inactive Publication Date: 2019-04-12
STATE GRID CORP OF CHINA +1
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Problems solved by technology

However, the grid-connected operation of the micro-grid will inevitably affect the operation of the distribution network. How to not only meet the demand for charging load power, but also improve the operation of the distribution network and achieve the purpose of peak load reduction and valley filling is the key to the control of the micro-grid for optical storage charging. main problems facing

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  • Photovoltaic storage charged micro-grid control method
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  • Photovoltaic storage charged micro-grid control method

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Embodiment Construction

[0023] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0024] figure 1 A topology of photovoltaic storage charging microgrid is described. The photovoltaic power generation system is connected to the DC bus through a DC / DC converter as the main power generation unit of the system;

[0025] The energy storage system is connected to the DC bus through a bidirectional DC / DC converter. As a system energy storage unit, it is the main unit for regulating the power balance of the micro-grid system and adjusting the peak and valley filling of the distribution network;

[0026] The distribution network is connected to the DC bus through a bidirectional DC / AC converter. On the one hand, when the power demand of the micro-grid is large, it provides electric energy to the charging load in the micro-grid; Receiving the electric energy generated by the microgrid, eliminating peaks and filling valleys.

[0027] In the optical storage ...

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Abstract

The invention discloses a photovoltaic storage charged micro-grid control method. A photovoltaic power generation system is connected to a direct current bus through a DC / DC converter; an energy storage system is connected with the direct current bus through a bidirectional DC / DC converter; a power distribution network is connected to the direct current bus through a bidirectional DC / AC converter;in a photovoltaic storage charged micro-grid system, a micro-grid controller is connected with the photovoltaic power generation system, the energy storage system, the power distribution network anda charging load to collect the running state and electric quantity information of each unit of the micro-grid, wherein the output control signals act on the DC / DC converter, the bidirectional DC / DC converter and the bidirectional DC / AC converter respectively. The economic benefit and environmental benefit in the construction operation process of a charging station can be improved.

Description

technical field [0001] The invention relates to the field of control of an optical storage charging microgrid, in particular to a control method for an optical storage charging microgrid. Background technique [0002] In response to the social call of "environment-friendly and energy-saving", electric vehicles have emerged as the times require and are vigorously developed. Therefore, charging stations need to be established to increase the source of power for electric vehicles. At present, the establishment of large and medium-sized charging stations requires the construction of distribution networks around them to provide electric energy for charging piles. The charging time of users is uncertain, which makes it difficult to control the distribution network, which may increase the difficulty of grid dispatching, or cause grid voltage fluctuations, etc.; at the same time, most of the power of charging stations comes from fossil fuel power generation, and the carbon emissions...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/32H02J3/38H02J3/48
CPCH02J3/383H02J3/32H02J3/48Y02E10/56Y02E70/30
Inventor 郝伟蒋勃谭敏戈蒋琪李建兴杨智朱岸明苟秦晋杨柳戈弓尚宏李尧韩波彭芳井刚何凯薛晶毕潇昳薛军贾静高彦骋吴建民陈晓靳媛李品超
Owner STATE GRID CORP OF CHINA
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