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Power grid energy conservation and loss reduction control method considering reactive response capability of charging pile

A control method, energy-saving and loss-reducing technology, applied in reactive power compensation, circuit devices, AC network circuits, etc.

Inactive Publication Date: 2017-05-24
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +3
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Problems solved by technology

[0007] At present, there have been a large number of researches on the active power control of electric vehicles, but they mainly use the Vehicle-to-Grid (V2G) active power response capability of electric vehicles to improve the voltage stability and power quality of the system. Discuss the reactive power generated by charging piles participating in the optimal operation of the system, and reactive power optimization is an effective means to ensure the safe operation of the power grid and reduce the loss of active power grids

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  • Power grid energy conservation and loss reduction control method considering reactive response capability of charging pile
  • Power grid energy conservation and loss reduction control method considering reactive response capability of charging pile
  • Power grid energy conservation and loss reduction control method considering reactive response capability of charging pile

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Embodiment

[0111] The present invention uses an IEEE-30 node calculation example to verify the proposed reactive power and voltage optimization control strategy considering charging piles. Such as figure 2 As shown, in this system, the upper and lower limits of the voltage of each load node are [0.95, 1.05], and the upper and lower limits of the voltage of each generator node are [0.95, 1.10]; nodes 5, 17 and 24 are equipped with shunt capacitor bank compensation devices, The number of parallel capacitors at nodes 5 and 24 is 10, and the individual compensation capacity is 1Mvar, while the number of parallel capacitors at node 17 is 10, and the individual compensation capacity is 2Mvar; lines 6-9, 6-10, 4-12 and 28- There is an on-load tap-changing transformer directly between 27, the adjustment range of taps is [0.9,1.1], and the adjustment interval is 0.025; nodes 13 and 27 are wind power nodes; according to different load types, the system is divided into industrial areas, commercial...

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Abstract

The present invention discloses a power grid energy conservation and loss reduction control method considering reactive response capability of a charging pile. the features of a charging pile taken as a reactive resource and the reactive voltage-regulation principle are analyzed, a reactive voltage optimization model considering the day-ahead optimal scheduling and the intra-day optimal correction is putted forward, according to the mathematic model, the day-ahead optimal scheduling employs a traditional parallel capacitor set and an on-load voltage regulation transformer to reduce transmission losses, and the reactive support of the electric car charging pile is employed to reduce the transmission losses when the intra-day abnormal operation; and a time-sequence progressive reactive control scheme based on the reactive voltage sensitivity is provided, and the reactive response capacity of the electric car is employed to perform reactive optimization correction. The power grid energy conservation and loss reduction control method considering the reactive response capability of the charging pile realizes the reactive local compensation and continuous regulation and reduces the active loss of the power grid.

Description

technical field [0001] The invention relates to a control method for power grid energy saving and loss reduction taking into account the reactive power response capability of charging piles, and belongs to the technical field of power distribution network technology loss reduction. Background technique [0002] The traditional distribution network is not suitable for accessing a large number of distributed power sources. Under the condition of a large number of distributed power sources, micro-grids, and electric vehicle charging and discharging stations connected to the grid, the smart distribution network is faced with two-way power flow, distributed power intermittent and load time and space. A series of problems such as uncertainty make dispatching and operation more complicated than traditional power grids. Compared with the traditional distribution network, the smart distribution network has greatly improved requirements in terms of operation safety, reliability, econo...

Claims

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Application Information

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IPC IPC(8): H02J3/16
CPCH02J3/16H02J2203/20Y02E40/30
Inventor 安海云穆云飞周前王明深周琪刘建坤陈哲陈静
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST
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