Day-ahead electricity-gas coupling coordinated scheduling method based on improvement of wind power absorption capability

A technology for wind power consumption and coordinated dispatch, applied in wind power generation, electrical components, circuit devices, etc.

Pending Publication Date: 2021-12-28
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For the scheduling of electricity-gas coupling, at present, it is mainly to consider the different time scale characteristics of the energy transmission speed of the power grid and the natural gas network, and to consider them in the optimization operation model, but for the different time scales of the electricity-gas energy flow transmission Most of the characteristics start from the deterministic optimized power flow, and the characteristics and influence of the slow dynamic characteristics of natural gas transmission in the electric-pneumatic coupling system in dealing with wind power uncertain power fluctuations have not been analyzed in depth

Method used

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  • Day-ahead electricity-gas coupling coordinated scheduling method based on improvement of wind power absorption capability
  • Day-ahead electricity-gas coupling coordinated scheduling method based on improvement of wind power absorption capability
  • Day-ahead electricity-gas coupling coordinated scheduling method based on improvement of wind power absorption capability

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Embodiment 1

[0041] figure 1 It is a day-ahead electric-pneumatic coupling coordinated scheduling method based on improving wind power accommodation capacity. figure 1 Among them, a day-ahead electrical-pneumatic coupling coordinated scheduling method based on improving wind power accommodation capacity provided by the present invention includes:

[0042] S1: Obtain related information such as power grid topology, gas unit information, gas network topology and electric load; said S1 includes the following steps:

[0043] S101: Acquiring forecasted values ​​of electric and gas loads and output forecasted values ​​of wind turbines in the next 24 time periods.

[0044] S102: Acquiring grid topology, gas-fired unit and coal-fired unit information.

[0045] S103: Obtain gas network topology, gas network pipeline and node information.

[0046] S2: Modeling electrical coupling equipment and natural gas storage; said S2 includes the following steps:

[0047] S201: Modeling natural gas pipeline...

Embodiment 2

[0070] The electrical coupling system composed of a modified 6-node power grid system and a 5-node natural gas system is used for calculation example analysis. The electrical coupling system consists of 1 wind farm, 3 gas-fired units, and 1 conventional gas source. The installed capacity of the wind turbine is 300MW. The grid topology of the simulation system is as follows: figure 2 shown.

[0071] S1: Obtain relevant information such as power grid topology, gas unit information, gas network topology, and electrical load;

[0072] Electric-pneumatic coupling topologies such as figure 2 shown;

[0073] The output of wind turbines is as image 3 shown;

[0074] The gas unit parameters are shown in the table below:

[0075] Table 1 Gas unit parameters

[0076]

[0077] HHV takes 35.88MJ / m 3 .

[0078] Coal-fired unit constraints are shown in the table below:

[0079] Table 3 Coal-fired unit constraint table

[0080]

[0081] The natural gas system parameters are...

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Abstract

The invention discloses a day-ahead electricity-gas coupling coordinated scheduling method based on improvement of wind power absorption capability. The day-ahead power-gas coupling coordinated scheduling method based on improvement of the wind power absorption capability comprises the steps of obtaining related information such as power grid topology, gas unit information, gas network topology and electric load; modeling the electrical coupling equipment and the natural gas pipeline memory; establishing a day-ahead coordinated dispatching model of the electricity-gas coupling system by taking maximum wind power consumption as a target; and solving the model to obtain a day-ahead scheduling plan of the electricity-gas coupling system. According to the day-ahead electricity-gas coupling coordinated scheduling method based on improvement of the wind power absorption capability, the wind power output fluctuation is smoothed based on the adjustment characteristics of the gas turbine, and the wind power absorption capability is further improved.

Description

technical field [0001] The invention belongs to the field of optimal scheduling of multi-energy systems, and in particular relates to an electrical-gas coupling coordinated scheduling method based on improving wind power absorptive capacity. Background technique [0002] Because wind power has the characteristics of anti-peak regulation and random fluctuation, the effective consumption of wind power poses new challenges to power system dispatching. In recent years, various methods such as gas turbines and heat storage have been gradually introduced to build multi-energy systems to form multi-energy complementarity to improve the consumption of wind power. Among them, gas turbines have strong adjustment capabilities and flexible and rapid start-up and shutdown, so the proportion of gas turbines in the power grid has increased year by year. [0003] For the scheduling of electricity-gas coupling, at present, it is mainly to consider the different time scale characteristics of ...

Claims

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Application Information

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IPC IPC(8): H02J3/46H02J3/24H02J3/00G06Q10/06G06Q50/06
CPCH02J3/466H02J3/24H02J3/003H02J3/004G06Q10/06312G06Q50/06H02J2203/20H02J2300/28Y02E10/76Y02E40/70Y04S10/50
Inventor 庞清仑刘文颖张尧翔王方雨张雯程张雨薇刘紫东曾贇杨美颖申自裕韩小齐曹钰
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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