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Multi-time-scale AC/DC power distribution network scheduling method and device

A technology with multiple time scales and scheduling methods, applied in the direction of single AC network with different frequencies, single network parallel feeding arrangement, etc., can solve the problems that cannot guarantee the reliable and stable operation of AC and DC distribution network, and achieve improved flexibility Stability, reduce operating energy consumption, and improve the effect of absorbing capacity

Active Publication Date: 2020-02-11
XUJI GRP +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-time scale AC-DC distribution network scheduling method and device to solve the problem that the existing technology cannot guarantee the reliable and stable operation of the AC-DC distribution network including AA-CAES energy storage devices

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  • Multi-time-scale AC/DC power distribution network scheduling method and device
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  • Multi-time-scale AC/DC power distribution network scheduling method and device

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Embodiment Construction

[0044] Embodiments of scheduling methods for multi-time scale AC and DC distribution networks:

[0045] The multi-time-scale AC / DC distribution network scheduling method proposed in this embodiment is based on such as figure 1 The simplified AC and DC power distribution system (ie AC and DC power distribution network) shown, the AC and DC power distribution network includes DC power distribution network, AC power distribution network and VSC converter station; DC power distribution network includes photovoltaic power distribution and DC power distribution network Load, AC distribution network includes gas turbine, AA-CAES device and AC load, of which TG is gas turbine, PV is photovoltaic, CAES is AA-CAES device, that is, compressed air energy storage, and it is assumed that both AC and DC loads can participate in IDR ( Incentive Demand Response).

[0046] The multi-time scale AC / DC distribution network scheduling method includes the following steps:

[0047] build as figur...

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Abstract

The invention relates to a multi-time-scale AC / DC power distribution network scheduling method and device, which belong to the technical field of AC / DC power distribution network scheduling. The method comprises the following steps of: establishing a double-time-scale scheduling model which comprises a day-ahead scheduling model and a real-time scheduling model and acquiring short-term predictionvalues and ultra-short-term prediction values of photovoltaic and flexible loads, inputting the short-term prediction values of the photovoltaic and flexible loads into the day-ahead scheduling modelto obtain the day-ahead scheduling results of the start-stop state of a gas turbine, the operation condition of an AA-CAES device and the flexible load scheduling plan, inputting the day-ahead scheduling results and the ultra-short-term prediction values of photovoltaic and flexible loads to the real-time scheduling model to obtain a real-time scheduling result, and scheduling the AC / DC power distribution network through the real-time scheduling result. The method and the device improve the operation flexibility and stability of the system, improve the renewable energy consumption capability of the system, reduce the operation energy consumption of the system, and provide guidance for the safe, stable and economic operation of the power grid.

Description

technical field [0001] The invention relates to a multi-time scale AC / DC distribution network scheduling method and device, and belongs to the technical field of AC / DC distribution network scheduling. Background technique [0002] Compared with the traditional distribution network, the direct connection of photovoltaics to the DC side through the DC distribution network will save a lot of converter links and improve energy utilization; Power compensation can ensure the safe operation of the power distribution system. [0003] In recent years, due to the consideration of Advanced Adiabatic Compressed Air Energy Storage (AA-CAES) in energy storage devices, AA-CAES has the advantages of large capacity, long life, no pollution, and low cost. At present, one of the most promising physical energy storage technologies has received extensive attention from academia and industry. There is no mature dispatching control method for the AC / DC distribution network including the energy s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/02H02J3/46
CPCH02J3/02H02J3/46
Inventor 王志成翟登辉史善哲许丹张彦龙
Owner XUJI GRP