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PSCAD-based hybrid micro-grid system, controller and method

A technology of micro-grid and DC micro-grid, applied in current collectors, single AC networks with different frequencies, photovoltaic power generation, etc., can solve problems such as single operating conditions, inability to guarantee power supply reliability and power quality

Pending Publication Date: 2021-11-09
XIDIAN POWER RECTIFIER XIAN +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] Most of the existing AC-DC hybrid microgrid design methods only include distributed power sources such as wind turbines, photovoltaics, and energy storage, and the control design methods of the overall system are mostly master-slave control, and the operating conditions of the overall system are relatively single. Therefore, , cannot guarantee power supply reliability and power quality

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  • PSCAD-based hybrid micro-grid system, controller and method
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  • PSCAD-based hybrid micro-grid system, controller and method

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Embodiment Construction

[0046] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0047] Before introducing the embodiments of the present invention, terms involved in the present invention are firstly introduced.

[0048] 1. PSCAD: Power Systems Computer Aided Design power system electromagnetic transient simulation software.

[0049] 2. APF: Active Power Filter active filter.

[0050] 3. MPPT: Maximum Power Point Tracking Maximum Power Point Tracking.

[0051] 4. SOC: State of Charge.

[0052] For more in-depth analysis and research, the embodiment of the present invention provides a distributed AC-DC hybrid microgrid scheme based on PSCAD, wh...

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Abstract

The invention discloses a PSCAD-based hybrid micro-grid system, a controller and a method. The system comprises an alternating current bus, a direct current bus and a power distribution network, wherein the alternating-current bus and the direct-current bus are connected to a power distribution network; a direct-current micro-grid which comprises a direct-current micro-grid super capacitor, a direct-current micro-grid photovoltaic device, a direct-current micro-grid storage battery, a direct-current load and a direct-current charging pile; an alternating-current micro-grid which comprises a micro gas turbine, an alternating-current micro-grid super capacitor, an alternating-current micro-grid photovoltaic device, a fan, an electric energy quality management device, a diesel generator, an alternating-current micro-grid storage battery and an alternating-current load, wherein the direct current micro-grid and the alternating current micro-grid are connected with the alternating current bus; and a controller which is used for controlling the operation of the direct-current micro-grid and the alternating-current micro-grid according to the current operation condition of the micro-grid and a preset bottom-layer control strategy and an upper-layer energy management strategy. The invention provides a PSCAD-based distributed AC / DC hybrid micro-grid scheme, so that the power supply reliability and the electric energy quality are ensured.

Description

technical field [0001] The invention relates to the technical field of AC / DC hybrid microgrid, and relates to a PSCAD-based hybrid microgrid system, controller and method. Background technique [0002] This section is intended to provide a background or context to embodiments of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] Due to the continuous improvement of the installed capacity of distributed power, the proportion and penetration rate of distributed power in the medium and low voltage distribution network are also expanding. The issue of various effects on the power balance also comes to the fore. Microgrid is a small power generation and distribution system integrating distributed power supply, load, energy storage and other equipment. Its more flexible operation mode provides an effective solution for large-scale distributed power supply access to the power system. [00...

Claims

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Application Information

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IPC IPC(8): H02J3/02H02J3/38H02J3/32H02J7/34
CPCH02J3/02H02J3/381H02J3/32H02J7/345H02J2300/10H02J2300/24H02J2300/28Y02E10/56
Inventor 娄彦涛程晓绚任军辉李嘉丰李天泽熊显智党瑞李智轩
Owner XIDIAN POWER RECTIFIER XIAN
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