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Photovoltaic inversion grid-connection and harmonic suppression hybrid system for micro grid and composite control method thereof

A photovoltaic power generation and harmonic control technology, which is applied in photovoltaic power generation and AC network to reduce harmonics/ripples, harmonic reduction devices, etc. It can solve the problems of complex system structure and increased investment in system equipment.

Inactive Publication Date: 2010-04-21
HUNAN UNIV
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  • Abstract
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Problems solved by technology

This will undoubtedly increase the investment of system equipment, complicate the structure of the system, and adding additional equipment will also bring new power quality problems

Method used

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  • Photovoltaic inversion grid-connection and harmonic suppression hybrid system for micro grid and composite control method thereof
  • Photovoltaic inversion grid-connection and harmonic suppression hybrid system for micro grid and composite control method thereof
  • Photovoltaic inversion grid-connection and harmonic suppression hybrid system for micro grid and composite control method thereof

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0027] Such as figure 1 As shown, the micro-grid photovoltaic power generation inverter grid-connected and harmonic control hybrid system includes: photovoltaic array cells, photovoltaic output filters, three-phase voltage inverters, output filters and passive filter banks. Photovoltaic array cells through the diode D 1 , Diode D 2 Connected to the DC side capacitor of the inverter, the inductance L f and capacitance C f A photovoltaic output filter is formed to make the DC side voltage more stable. The operator can pass the switch K 1 The closure to connect or disconnect the photovoltaic array cells. The three-phase voltage type inverter passes the inductance L 4 , capacitance C 4 The output filter formed in parallel is connected to the power grid in parallel after filtering, and the capacitor C 3 , inductance L 3 Connected in series to form ...

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Abstract

The invention discloses a photovoltaic inversion grid-connection and harmonic suppression hybrid system for a micro grid and a composite control method thereof. The photovoltaic inversion grid-connection and harmonic suppression hybrid system for the micro grid comprises photovoltaic array cells, a photovoltaic output filter, a three-phase voltage inverter, an output filter and a passive filter bank. The photovoltaic inversion grid-connection and harmonic suppression hybrid system for the micro grid and the composite control method thereof realize dynamic active and passive power compensation of the micro-grid, stable system voltage, and real-time and dynamic management on harmonic waves.

Description

technical field [0001] The invention belongs to the technical field of power quality and control technology of microgrid and power distribution system containing microgrid, and particularly relates to a microgrid photovoltaic power generation inverter grid-connected and harmonic control hybrid system and its composite control method, which can compensate microgrid The active and reactive power can also control the harmonics caused by nonlinear loads in the microgrid. Background technique [0002] Energy is the basis for human survival and development. As the cleanest and most convenient form of energy, electricity is the lifeblood of the national economy. The adoption of distributed power generation energy supply technology will help to make full use of the abundant clean and renewable energy in various places. Providing "green electricity" to users is an important measure to achieve the goal of "energy saving and emission reduction" in my country, and it is also an importa...

Claims

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Application Information

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IPC IPC(8): H02J3/18H02J3/01
CPCY02E10/563Y02E40/30Y02E10/56Y02E40/40
Inventor 罗安徐先勇吕志鹏彭双剑于力蔡平吕文坤兰征康珍沈瑶周贤正
Owner HUNAN UNIV
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