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Power system distribution robustness real-time scheduling method and system considering flexibility requirements

A real-time scheduling, power system technology, applied in electrical components, circuit devices, AC network circuits, etc., can solve the problems that do not consider specific scenarios, cannot meet the needs of power system flexibility, and do not have clear flexibility requirements and uncertainties. relationship and other issues, to achieve the effect of taking into account flexibility and economic indicators, and good consideration

Active Publication Date: 2020-08-21
RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main difference between flexibility analysis and traditional robust optimization is that flexibility analysis considers the incremental uncertainty of specific scheduling plans, while traditional robust optimization does not consider specific scenarios
At present, the main research is on the treatment of uncertainty in real-time dispatching, and there is no clear relationship between flexibility requirements and uncertainty, which cannot meet the demand for flexibility in real-time dispatching of power systems.

Method used

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  • Power system distribution robustness real-time scheduling method and system considering flexibility requirements
  • Power system distribution robustness real-time scheduling method and system considering flexibility requirements
  • Power system distribution robustness real-time scheduling method and system considering flexibility requirements

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0033] like figure 1 As shown, a power system distributed robust real-time scheduling method considering flexibility requirements in this embodiment includes:

[0034] S101: Obtain the power system topology and related parameters, and obtain the flexibility requirements of the regulation capacity provided by each unit;

[0035] S102: On the basis of considering the adjustment capacity flexibility requirement and economy, convert the adjustment capacity flexibility requirement of the corresponding unit into an economic index, and form an objective function together with the unit fuel cost;

[0036] S103: Solve the objective function under the most unfavorable probability distribution condition that satisfies the constraint, so that the expected cost is the lowest, and the output increment of the generating unit is obtained, and then in the real-time dispatching, according to the linear automatic generation control strategy, the power imbalance is allocated to the power distribu...

Embodiment 2

[0138] This embodiment provides a power system distributed robust real-time dispatch system considering flexibility requirements, including:

[0139] A data acquisition module, which is used to acquire the power system topology and related parameters, and obtain the flexibility requirements of the adjustment capacity provided by each unit;

[0140] Objective function building block, which is used to convert the adjustment capacity flexibility demand of the corresponding unit into an economic index, and form the objective function together with the unit fuel cost;

[0141] The real-time scheduling module is used to solve the objective function under the most unfavorable probability distribution condition that satisfies the constraints, so that the expected cost is the lowest, and the output increment of the outgoing unit is obtained, and then in the real-time scheduling according to the linear automatic power generation control strategy, based on the power distribution factor. ...

Embodiment 3

[0145] This embodiment provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the power system distribution robust real-time scheduling method considering flexibility requirements as described in Embodiment 1 is implemented. step.

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Abstract

The invention belongs to the field of power dispatching, and provides a power system distribution robustness real-time dispatching method and system considering flexibility requirements. The power system distribution robust real-time scheduling method considering the flexibility requirement comprises the steps of obtaining a power system topological structure and related parameters thereof, and obtaining an adjustment capacity flexibility requirement provided by each unit; converting the regulation capacity flexibility requirement of the corresponding unit into an economic index, and forming atarget function together with the unit fuel cost; and solving the target function under the condition of meeting the most unfavorable probability distribution of the constraint to enable the expectedcost to be lowest, obtaining the output increment of the unit, and further distributing the power unbalance to the unit based on the power distribution factor according to a linear automatic power generation control strategy in real-time scheduling to obtain a real-time scheduling result.

Description

technical field [0001] The invention belongs to the field of power dispatching, and in particular relates to a power system distribution robust real-time dispatching method and system considering flexibility requirements. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] The processing methods of random variables such as renewable energy and load are mainly divided into stochastic optimization, robust optimization and multi-layer combination. At present, there are many studies on the flexibility characteristics of power systems using stochastic optimization and robust optimization. Stochastic programming usually assumes that the random characteristics of random variables are known, and adopts the method of multi-scenario simulation. Since the assumed random characteristics may deviate from the real characteristics, stochastic programming ma...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06H02J3/46
CPCG06Q10/06312G06Q50/06H02J3/466H02J2203/20Y04S10/50
Inventor 袁振华许乃媛赵龙王艳白娅宁刘晓明田鑫曹相阳孙东磊张丽娜张玉跃付一木张栋梁孙毅王男陈博薄其滨杨斌王宪刘冬牟颖张家宁魏佳杨思高效海魏鑫王轶群程佩芬
Owner RES INST OF ECONOMICS & TECH STATE GRID SHANDONG ELECTRIC POWER