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Reactive automatic compensation method for microgrid system

A technology of automatic power compensation and micro-grid, applied in reactive power compensation, AC network voltage adjustment, etc., can solve problems such as weak grid, over-limit bus voltage, large fluctuation range, etc.

Inactive Publication Date: 2016-07-27
CHENGDU XINWEIBAO TECH CO LTD
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The microgrid composed of wind power has intermittent and strong randomness in its output. The change of wind power output will affect the reactive power distribution of the transmission channel, and then change the bus voltage of the channel. The overall performance is that with the change of wind power output, the AC output channel At the same time, because most of the wind power is connected to remote areas, the grid frame of the outgoing channel is relatively weak, and the short-circuit capacity is small, so the voltage fluctuation will be "amplified", the fluctuation range is large, and even the busbar Operating risks such as voltage over-limit, and the problem of difficult voltage control after large-scale wind power access will be highlighted

Method used

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  • Reactive automatic compensation method for microgrid system
  • Reactive automatic compensation method for microgrid system
  • Reactive automatic compensation method for microgrid system

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Embodiment Construction

[0080] figure 1 It shows a micro-grid system 10 with automatic reactive power compensation of the present invention. The micro-grid 10 includes: a wind turbine 12, a load 14 in the micro-grid, an SVG device 13, and a monitoring device 11; the monitoring device 11 includes: The wind turbine monitoring module 113 is used to monitor the wind turbine 12 in real time, predict the generated power of the wind turbine 12, and control the operation of the wind turbine; the grid-connected monitoring module 112 is used to monitor the AC bus voltage of the grid-connected point and control The grid-connected operation of the microgrid 10; the load monitoring module 114 is used to monitor the load 14 in the microgrid in real time; the SVG monitoring module 115 is used to monitor the SVG device 13 in real time; the central control module 116 is used to determine the operation of the microgrid 10 method, and send instructions to each module in the monitoring device 11 to execute the operation...

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Abstract

The invention discloses a reactive automatic compensation method for a microgrid system. According to the method, by taking the active and reactive output demands of a microgrid, the load power demand in the current microgrid, the active and reactive output demands of a wind power unit and the reactive output demand of an SVG device as constraint conditions, the reactive optimization operation of the microgrid is realized and the voltage fluctuation is inhibited.

Description

Technical field [0001] The invention relates to a reactive power automatic compensation method of a microgrid system. Background technique [0002] The energy and environmental crisis has become an important issue affecting the sustainable development of human beings, and the utilization of clean and renewable energy is the fundamental way to solve this problem. With the maturity of wind power generation, photovoltaic power generation, wave power generation and other renewable energy power generation technologies, more and more renewable energy microgrids are connected to the power grid in a distributed manner to meet people's daily production and living electricity needs. [0003] Especially for wind power, several million-kilowatt wind power bases in my country have been completed and connected to the grid for operation, and the planned eight million-kilowatt wind power bases are also being gradually constructed. The development mode of wind power in my country is differen...

Claims

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Application Information

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IPC IPC(8): H02J3/16
CPCH02J3/16Y02E40/30
Inventor 靖新宇
Owner CHENGDU XINWEIBAO TECH CO LTD
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