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Medium and long term electric quantity safety checking method, device and system based on SCUC

A safety check, medium and long-term technology, applied in system integration technology, information technology support systems, instruments, etc., can solve problems such as scheduling default risk, inability to meet the minimum power-on mode of the power grid, and difficulty in considering the impact of power plan section power flow.

Active Publication Date: 2019-03-08
NARI TECH CO LTD +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The expansion of power trading scale poses new challenges to the safe operation of the power grid, which are manifested in the following aspects: ①The greater the rigid execution requirements for medium and long-term power, the smaller the power space that can be used for balance and adjustment in power grid dispatching, which may lead to The consumption of clean energy cannot be guaranteed, and it may even lead to the inability to meet the requirements of the minimum start-up mode of the power grid, which affects the safe operation of the power grid; Risk; ③ There are uncertainties in the operation of the medium and long-term power grid, the medium- and long-term power contracts may not be actually implemented, and there is a risk of default in dispatching
[0004] At present, medium and long-term power safety checks are mainly based on manual experience, without detailed power and power flow analysis, and it is difficult to consider the impact of power planning on section power flow
The verification method based on manual experience makes it difficult to analyze whether various medium and long-term power contracts can be reasonably and safely allocated to each day and hour
With the continuous expansion of the scale of the power grid, the structure and operation mode of the power grid are becoming more and more complex, and various constraints of the power grid are continuously strengthened. The traditional relatively extensive mid- and long-term electricity verification methods can no longer meet the requirements. The mid- and long-term safety verification should be done by Empirical verification is transformed into vectorized verification to improve the accuracy and standardization of verification

Method used

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  • Medium and long term electric quantity safety checking method, device and system based on SCUC
  • Medium and long term electric quantity safety checking method, device and system based on SCUC
  • Medium and long term electric quantity safety checking method, device and system based on SCUC

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Effect test

Embodiment 1

[0093] The embodiment of the present invention provides a mid-to-long-term power safety check method based on SCUC, which is mainly based on the safety-constrained unit combination technology. An optimization model for power safety check, using a mixed integer programming algorithm to solve the mid- and long-term power safety check optimization model to obtain the power deviation of the power plant, and obtain the analysis result of the power plan safety check of the power plant based on the power deviation of the power plant ; In a specific manner of the embodiment of the present invention, the regional scope of the security check is the provincial power grid, and the security check is performed on a monthly basis.

[0094] On the medium and long-term time scale, the priority power generation rights are determined by the government departments. Power generation companies and users (including power sales companies, the same below) conduct bilateral transactions in the medium a...

Embodiment 2

[0127] Based on the same inventive concept as in Embodiment 1, the present invention provides a medium- and long-term power safety checking device, including:

[0128] The first acquisition module is used to obtain the area scope, time period and boundary conditions of medium and long-term power safety checks that need to be carried out in the medium and long-term power safety checks; the boundary conditions of the medium and long-term power safety checks include: every day in the time period Hourly system load and bus load demand, as well as maintenance plan, tie line plan, power plant power plan and stability limit data within the time period;

[0129] The second acquisition module is used to obtain a mid-to-long-term power safety check optimization model, the constraints of the mid-to-long-term power safety check optimization model include: system balance constraints, unit operation constraints, power grid security constraints, and power balance constraints of power plants, ...

Embodiment 3

[0164] Based on the same inventive concept as that of Embodiment 1, the present invention provides a SCUC-based medium and long-term power safety check system, including:

[0165] a processor adapted to implement the instructions; and

[0166] The storage device is suitable for storing a plurality of instructions, and the instructions are suitable for being loaded by the processor and executing the steps described in any one of Embodiment 1.

[0167] To sum up: the present invention discloses a SCUC-based method, device and system for mid- and long-term power safety checks, including: obtaining various optimization data to determine the optimization space for mid- and long-term power safety checks; Establish a safety-constrained unit combination model; take the power plant within the research scope as the power verification object, establish the power balance constraint of the power plant, and set the optimization goal to minimize the deviation between the power plant's power ...

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PUM

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Abstract

The invention discloses a medium and long term electric quantity safety checking method, device and system based on SCUC, and the method comprises the steps of obtaining various optimization data, anddetermining an optimization space for the medium and long term electric quantity safety checking; establishing a safety constraint unit combination model according to actual operation conditions of the power grid; using a power plant within the research range as an electric quantity checking object, establishing the electric quantity balance constraint of the power plant, setting the optimizationtarget to minimize the deviation between the power generation amount of the power plant and the planned electric quantity, and obtaining an optimization model for medium-and-long-term electric quantity safety checking; solving and obtaining the unit start-stop state, the active power output, the branch power flow and the electric quantity deviation of the power plant in each time period, obtaining a medium-and-long-term electric quantity safety check conclusion, and obtaining a blocking section power flow result influencing the execution of the electric quantity plan. The method is helpful for quantitatively analyzing safety risks possibly caused by the medium-and-long-term electric quantity plan to power grid operation and improving the medium-and-long-term scheduling analysis decision level of the power grid.

Description

technical field [0001] The invention belongs to the technical field of electric power system scheduling automation, and in particular relates to a method, device and system for mid- and long-term power safety checking based on SCUC. Background technique [0002] Medium and long-term electricity trading mainly refers to the yearly and monthly electricity trading carried out by market entities such as power generation companies, electricity sales companies, and power users who meet the access conditions through independent negotiation, centralized bidding, listing transactions, and other market-oriented methods. With the continuous advancement of my country's electricity market reform, medium and long-term trading varieties have gradually increased, the proportion of transaction electricity has gradually increased, and market transaction electricity has gradually replaced annual planned electricity, forming a pattern of coexistence of planned electricity and market electricity....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0635G06Q10/067G06Q50/06Y04S10/50Y02E40/70
Inventor 李利利涂孟夫丁恰昌力杨军峰李旻王亮张丙金冷月杨鹏程
Owner NARI TECH CO LTD
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