Micro-power-grid central control unit

A central controller and micro-grid technology, applied in the direction of electrical components, circuit devices, single-network parallel feeding arrangements, etc., can solve the problems of no micro-grid product development, etc., to improve maintainability, flexibility and ease of use, and ensure O&M safety and efficiency improvement

Active Publication Date: 2014-12-17
ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, domestic and foreign studies on microgrid control systems are mostly focused on theoretical research, and there is no actual product development specifically for microgrids.

Method used

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Embodiment Construction

[0020] The present invention will be further explained below in conjunction with the drawings.

[0021] Such as figure 1 As shown, the present invention provides a microgrid central controller, which mainly includes the following seven modules:

[0022] CPU module: It is the computing core and control core of the microgrid central controller. Its hardware uses an ARM9 processor, and its software uses a multi-process and multi-threaded design method based on the embedded Linux2.6 system.

[0023] Power parameter collection module: Complete collection of power grid power parameters, including phase voltage, phase current, power, power factor, frequency, and electric energy.

[0024] Power quality monitoring module: collect and monitor the power quality of the power grid at the grid connection point.

[0025] Data acquisition and protocol analysis module: integrated industry and power general standard protocols, including Modbus RTU, Modbus TCP, CAN2.0, DL / T645-1997 / 2007 protocol, power pr...

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Abstract

The invention discloses a micro-power-grid central control unit. The micro-power-grid central control unit is characterized by comprising a CPU (central processing unit) module, an electric parameter acquisition module, a power quality monitoring module, a data acquisition and protocol parsing module, an inverse power control module, an island detection module and other special functional modules. Through certain strategic coordinated optimization control, all distributed-type power supplies in a micro power grid are coordinated to be operated orderly, an inverter and equipment in a micro-power-grid system are subjected to continuous and smooth power regulation, the distributed-type generation power supplies and loads are controlled within a certain proportional and reasonable range, the distributed-type power generation equipment is reasonably utilized, and efficiency of the distributed-type power generation equipment is improved; meanwhile, the micro-power-grid central control unit has multiple software upgrading modes and debugging modes of network remoteness, local and the like, and maintainability and flexibility and easiness in use of the micro-power-grid control system are improved.

Description

Technical field [0001] The invention relates to a new energy distributed power generation, and is specifically a smart microgrid central controller. technical background [0002] In recent years, the application of distributed power has become more and more widespread, but the introduction of distributed power will have many impacts on the original operation control and protection of the distribution network. Therefore, it is necessary to deeply study the interaction mechanism between distributed power generation and distribution network. Especially when distributed power generation accounts for a high proportion of the entire grid, that is, under high penetration rates, it will have a great impact on the security and stability of the grid, such as voltage, frequency, power angle, and grid dispatch. The power output of distributed power generation is intermittent when the power is connected to the power supply, so it is necessary to fully consider the existing distributed power ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J13/00
CPCY02E40/70Y04S10/12Y04S10/50Y04S10/52
Inventor 李鹏郭晓斌许爱东雷金勇黄焘申展
Owner ELECTRIC POWER RESEARCH INSTITUTE, CHINA SOUTHERN POWER GRID CO LTD
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