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Backup optimization method and device for constraining unit combination based on support failure events

A failure event and unit combination technology, applied in circuit devices, data processing applications, information technology support systems, etc., can solve problems such as computer memory exhaustion and problems that cannot be solved, and achieve good accuracy and effectiveness, precision and efficiency The effect of solving

Inactive Publication Date: 2020-12-29
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When considering high-order faults and multiple time periods, even for smaller systems, computer memory can easily be exhausted and the problem cannot be solved

Method used

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  • Backup optimization method and device for constraining unit combination based on support failure events
  • Backup optimization method and device for constraining unit combination based on support failure events
  • Backup optimization method and device for constraining unit combination based on support failure events

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Embodiment 1

[0127] Taking the IEEE-RTS system as an example, the effectiveness of the proposed method is verified. The system contains 26 units. The unit combination data and ramp rate limit are obtained from literature [20], and the start-up cost and reliability data of generator sets are obtained from literature [21]. For simplicity, the reserve price is equal to 10% of the maximum incremental cost of generation. The output of the unit at the initial moment is determined by the economic dispatch when the load is 1700MW in the first period. Consider a period, LOLP max When is 0.001, use the method proposed in this paper to solve the backup optimization problem with LOLP constraints.

[0128] Running a basic unit combination without considering the spinning reserve, the status and output of each generator are shown in Table 2, and the CCOPT is established as shown in Table 3. The probability of failure above the third order is very small and negligible.

[0129] Table 2. Basic unit com...

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Abstract

The invention discloses a backup optimization method and device for constraining unit combinations based on support failure events. The method includes the following steps: Step 1: Run a basic unit combination backup optimization model to obtain basic unit combination scheduling results; Step 2: Based on the dispatching results, establish a lack of operational capacity table, calculate LOLP, and find marginal events from it; Step 3: Add the linear constraints corresponding to marginal events to the standby optimization model to obtain new dispatching results, and return to step 2 until the results are satisfied LOLP requirements. The invention considers multiple trade-offs in the problem, simplifies the LOLP constraint, and enables the model to be solved accurately and efficiently.

Description

technical field [0001] The invention belongs to the field of spinning reserve optimization, and in particular relates to a reserve optimization method and device for constraining unit combinations based on support failure events. Background technique [0002] Spinning reserve is an important resource in power system. The spinning reserve is mainly provided by the generators running in the network, which can be input into the system within a specified time to deal with the power fluctuations caused by the load changes in the system and component failure accidents, and avoid the load loss of the system. Configuring sufficient spinning reserves can reduce the possibility of load loss and improve the reliability of the power system. However, providing a spinning reserve comes at a cost, as new generator sets may be required to be connected to the system, or units being commissioned may be forced away from their optimum operating point. Therefore, the spinning reserve needs sci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06G06Q10/0635G06Q10/06315G06Q10/067H02J2203/20H02J3/001Y04S40/20Y02E60/00G06N7/01
Inventor 王明强刘源杨朋朋韩学山杨明王勇王孟夏
Owner SHANDONG UNIV
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