Power distribution network coordination control system based on three-port soft switching
A technology of coordinated control system and soft switching, applied in electrical components, circuit devices, AC network circuits, etc., can solve the problem that the distribution network scheduling method cannot meet the operation mode of the new form of power electronic distribution network.
Pending Publication Date: 2021-01-22
FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID
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[0004] In order to solve the problem that the current dispatching method of the distribution network cannot meet the operation mode of the new form of power electronics, the present invention proposes a distribution network coordination control system based on a three-port soft switch, which is suitable for flexible operation and scheduling of the distribution network While improving the controllability and observability of the scheduling end
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Embodiment 1
[0025] Such as figure 1 The block diagram of a coordinated control system for distribution network based on three-port soft switch is shown in Fig. figure 1 , the entire distribution network coordination control system includes: DC bus 1, three-port soft switch unit 2, AC power grid unit 3, local monitoring unit 4 and unified control module 5; one side of DC bus 1 connected to three-port soft switch unit 2 , the other side of the three-port soft switch unit 2 is connected to the AC grid unit 3, the AC grid unit 3 is connected to the local monitoring unit 4, and the local monitoring unit 4 monitors the running status of the AC bus in the AC grid unit 3, and connects the AC bus The operation state information of the system is sent to the unified control module 5, and the unified control module 5 determines the operation mode adjustment instruction of the three-port soft switch unit 2 according to the operation state information, and transmits the operation mode adjustment instru...
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The invention provides a power distribution network coordination control system based on three-port soft switching, relates to the technical field of alternating current and direct current hybrid power distribution network coordination control, and solves the problem that a scheduling mode of a current power distribution network cannot meet an operation mode of a power electronic new-form power distribution network. Starting from the level of operation scheduling of a power distribution network in a power electronic AC / DC hybrid new form, a three-port soft switch unit is utilized to be connected with an AC power grid unit and a DC bus, and the AC power grid unit is connected with an on-site monitoring unit. The on-site monitoring unit monitors the operation state in an alternating currentbus and uploads the operation state to a unified control module, the unified control module determines an operation mode adjustment instruction of the three-port soft switch unit according to the operation state information and transmits the operation mode adjustment instruction to the three-port soft switch unit, the three-port soft switch unit adjusts the operation mode, and all the components are highly matched. The high integration of the power distribution network coordination control system is realized, and the controllability and observability of a dispatching end are improved.
Description
technical field [0001] The invention relates to the technical field of coordinated control of an AC / DC hybrid distribution network, and more specifically, relates to a coordinated control system of a distribution network based on a three-port soft switch. Background technique [0002] In recent years, with the rapid development of new energy technologies, a large number of distributed power sources have been connected to the distribution network, making the grid structure and coordinated control methods of the future distribution network complex, and resulting in poor controllability and observability at the dispatching end. [0003] With the development of power electronics technology and the wide application of DC transmission projects, the new type of DC power distribution device has attracted extensive attention from scholars at home and abroad. Grid regulation level. On April 10, 2018, Zhang Xue, Pei Wei, Fan Shixiong and others published "Coordinated Control Method fo...
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Login to View More IPC IPC(8): H02J4/00
CPCH02J4/00H02J2203/20
Inventor 孔令生彭元泉范心明伍振华黎绍辉董镝宋安琪李新曾庆辉唐琪李国伟王俊波黎小龙张殷章涛区汝轩赵云云杨启明
Owner FOSHAN POWER SUPPLY BUREAU GUANGDONG POWER GRID