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Micro-grid multi-time scale energy management system based on electricity market

An energy management system and multi-time scale technology, applied in data processing applications, instruments, calculations, etc., can solve the problems of reducing battery life, increasing investment, and seldom considering the impact, etc., to achieve the effect of minimizing system interference

Pending Publication Date: 2022-04-29
STATE GRID SHANDONG ELECTRIC POWER
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Problems solved by technology

Through the analysis of the existing research, it can be found that the existing microgrid energy management strategies usually assume that the electricity price is fixed, so the influence of electricity price changes on the scheduling results of power sources, loads, and energy storage in the microgrid is rarely considered.
In addition, the scheduling strategy of the battery is different from that of the micro power supply. On the one hand, the short-term scheduling strategy has an important impact on the long-term service life of the battery, and frequent charging and discharging will greatly reduce the service life of the battery; on the other hand, the configuration of the micro-grid energy storage requires Balancing economy and safety, increasing energy storage capacity can reduce load loss, but increases additional investment

Method used

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  • Micro-grid multi-time scale energy management system based on electricity market
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  • Micro-grid multi-time scale energy management system based on electricity market

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Embodiment Construction

[0072] The application will be further described below in conjunction with the accompanying drawings and embodiments.

[0073] It should be noted that the terminology used herein is only for describing specific embodiments, and is not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0074] In this disclosure, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom" etc. refer to The orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only a relative term determined for the convenience of describing the...

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Abstract

The invention provides a micro-grid multi-time scale energy management system based on a power market, which is based on an alternating current micro-grid composed of a photovoltaic system, a wind power system, a super capacitor and a storage battery, and comprises an upper layer energy management controller and a lower layer energy management controller. The upper-layer energy management controller and the lower-layer energy management controller can obtain the control quantity of each layer under the step length by solving the target function of the energy management strategy of each layer in a single time step length in a rolling manner, and the control result of one layer can influence the control of the other layer. The storage battery and the super capacitor can be controlled under different pricing strategies, different prediction time domains and different prediction errors, and a preset control target is achieved.

Description

technical field [0001] This application relates to the technical field of relay protection management, in particular to a multi-time-scale energy management system for a microgrid based on an electric power market. Background technique [0002] The statements in this section merely provide background technical information relevant to this application and do not necessarily constitute prior art. [0003] The energy management strategy is usually formulated according to the predicted power output, load demand, market information, etc. within a certain period of time. According to different optimization objectives, the energy management system can flexibly schedule each device on the basis of satisfying the constraints to achieve micro Optimal operation of the grid. According to the different operation modes of the microgrid, the operation optimization of the microgrid is mainly divided into the operation optimization of the grid-connected microgrid and the operation optimizat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/06G06Q10/067G06Q50/06
Inventor 王维杰王俊山冯其芝刘松咸会增边文浩谢辰璐
Owner STATE GRID SHANDONG ELECTRIC POWER
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