Regional grid-connected and off-grid multi-power-generation-unit control device and method thereof
A technology of power generation unit and control method, which is applied in the direction of circuit devices, electrical components, AC network circuits, etc., can solve the problem of low correctness of protection action communication data, reduce the impact of the power grid, ensure safe and stable operation, and quickly respond Effect
Pending Publication Date: 2022-03-25
云南电网有限责任公司迪庆供电局
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Problems solved by technology
[0005] This application provides a control device and method for regional and off-grid multi-generation units to solve the problem of whether the multi-generation unit switching device only relies on passive detection of over / under voltage, over / under frequency and other related power changes in the distribution network to determine whether The problem of protection action and low accuracy rate of communication data occurred
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[0036] The embodiments will be described in detail hereinafter, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following examples do not represent all implementations consistent with this application. These are merely examples of systems and methods consistent with aspects of the present application as recited in the claims.
[0037] see figure 1 , is a structural schematic diagram of a regional off-grid multi-generating unit control device. This application provides a control device for regional and off-grid multi-generation units, including a control module, a carrier receiving module, a short-circuit monitoring module, a contactor driving module, a multi-interface and multi-protocol communication module, a voltage sensor, several current sensors an...
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The invention provides a regional grid-connected and off-grid multiple power generation unit control device and method. The control device comprises a control module, a carrier receiving module, a short circuit monitoring module, a contactor driving module, a multi-interface multi-protocol communication module, a voltage sensor, a plurality of current sensors and a plurality of contactors. The method comprises the steps of monitoring current and outlet voltage of a port of each power generation unit in real time through a voltage sensor and a current sensor, and determining power generation power of each power generation unit; pre-analyzing increased or decreased power of each power generation unit according to the power generation power; establishing a protocol code output by the power generation unit; when an off-grid control command is received, power increase and decrease and control code output are carried out on each power generation unit; and when a grid-connected control command is received, sorting the power generation power of each power generation unit from large to small, and putting the power generation units into operation in sequence according to the sorting. Quick response can be realized, impact of the distributed power generation system on the power grid is reduced, and safe and stable operation of the power distribution network is guaranteed.
Description
technical field [0001] The present application relates to the technical field of power system protection and control, in particular to a control device and method for regional and off-grid multi-generating units. Background technique [0002] In recent years, with the rapid development of renewable energy power generation technology, energy storage technology and load control technology, a large number of distributed renewable energy power generation and other power electronic equipment are connected to the 400V low-voltage distribution network to form a renewable energy micro-grid system. In order to reduce the losses caused by power outages and ensure the reliability of power supply for important loads, the microgrid requires the dual-mode operation function of on-grid and off-grid. [0003] With the development of science and technology and the access of large-scale distributed power sources to the distribution network, the power flow of the power grid has changed, and th...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H02J3/38H02J3/46H02J3/50H02J13/00
CPCH02J3/381H02J3/388H02J3/472H02J3/50H02J13/00002H02J13/00007H02J13/00028H02J2300/20H02J2300/24H02J2300/28Y02E40/70Y02B90/20Y04S10/123Y04S40/121
Inventor 吴万军杨金东张敏刘永礼和正强罗长兵徐彬伍绍鹏王宁李丽辉杨延军任宪利
Owner 云南电网有限责任公司迪庆供电局