Comprehensive energy system day-ahead economic dispatching method and system

A technology of integrated energy system and battery energy storage system, applied in the direction of system integration technology, information technology support system, instrument, etc., can solve the problem of inability to absorb renewable energy in the power system

Active Publication Date: 2019-06-21
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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Problems solved by technology

[0004] The power grid can rely on gas-fired generators to inject energy into the natural gas system, but the natural gas system cannot absorb the excess renewable energy in the power system

Method used

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  • Comprehensive energy system day-ahead economic dispatching method and system
  • Comprehensive energy system day-ahead economic dispatching method and system
  • Comprehensive energy system day-ahead economic dispatching method and system

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Embodiment Construction

[0111] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0112] Such as figure 1 As shown, the integrated energy system can include renewable energy power generation equipment such as wind power and photovoltaic power generation; energy storage equipment such as battery energy storage equipment and gas storage equipment; energy conversion equipment such as CHP energy stations, gas boilers, and P2G; These devices are connected to each other through the power grid, gas network and heating network.

[0113] Such as image 3 Shown is the schematic diagram of the input and output of the day-ahead economic dispatch algorithm. Depend on image 3It can be seen in the figure that the input data includes the current electricity price curve, power grid operation information, gas price, weather data, etc., as well as historical operation data. After calculation by short-term prediction algorithm and mixed integer o...

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Abstract

The invention relates to a comprehensive energy system day-ahead economic dispatching method and system, and the method comprises the steps: carrying out the prediction of wind power, photovoltaic power generation, electric load and thermal load of a comprehensive energy system, and obtaining a day-ahead prediction curve, namely a prediction result; and according to the prediction result, calculating an optimization target and constraint conditions of the comprehensive energy system, thereby executing day-ahead optimization, and obtaining the output of each CHP energy station in the comprehensive energy system, the output of the battery energy storage system, the output of the gas-fired boiler and the control instruction of the P2G equipment. According to the invention, the operation flexibility and the renewable energy consumption capability are improved.

Description

technical field [0001] The invention relates to a day-ahead economic scheduling method and system of an integrated energy system, belonging to the technical field of new energy generating sets. Background technique [0002] With the development of new energy technologies, the penetration rate of renewable energy and the continuous improvement of load demand, users' requirements for the reliability and flexibility of energy grids are increasing day by day. Renewable energy such as wind power and photovoltaic power generation is highly uncertain and intermittent, and issues such as wind and solar curtailment are becoming increasingly prominent. [0003] Although technologies such as distributed power generation and cogeneration of cooling, heating and power have been widely promoted, there are still many problems, such as high cost of connecting a single machine to the grid and difficult control. In order to better solve the problems and contradictions between distributed pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCY02E40/70Y04S10/50
Inventor 赵振兴陈新和裴玮马昕肖浩邓卫
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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