Receiving end power grid unit combination method and system considering rotational inertia constraint

A combination technology of receiving power grid and unit, applied in the direction of constraint-based CAD, computer-aided design, electrical digital data processing, etc., can solve the problem of lack of in-depth research on dynamic frequency stability, achieve improved frequency stability, and fast calculation process effective effect

Pending Publication Date: 2022-05-27
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a lack of in-depth research on dynamic frequency stabilization in current research

Method used

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  • Receiving end power grid unit combination method and system considering rotational inertia constraint
  • Receiving end power grid unit combination method and system considering rotational inertia constraint
  • Receiving end power grid unit combination method and system considering rotational inertia constraint

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] like figure 1 As shown, the embodiment of the present disclosure provides a method for combining power grid units at the receiving end considering the constraint of the moment of inertia, including the following steps:

[0070] S01, obtain the original data of the receiving end power grid and the control parameters of the BPSO algorithm, and set t=0, the maximum number of iterations T and the population size n, where t is the number of iterative particles;

[0071] S02, form a feasible solution that satisfies the constraints of spinning reserve and start-up and downtime;

[0072] S03, under the feasible solution of preprocessing, dynamic economic scheduling is performed according to the effective set method of quadratic programming, and the clear equivalence class is used to process opportunity constraints, and the objective function is calculated at the same time;

[0073] S04, calculate the target formula, update the speed and position of the particle group, and gene...

Embodiment 2

[0179] like image 3 As shown, the embodiments of the present disclosure provide a receiving-end power grid unit combination system considering rotational inertia constraints, including:

[0180] The data acquisition module is configured to: acquire the original data of the receiving end power grid and the control parameters of the BPSO algorithm, and set t=0, the maximum number of iterations T and the population size n, where t is the number of iterative particles;

[0181] a preprocessing module configured to: preprocess to form a feasible solution that satisfies the spinning reserve constraints and the on-off time constraints;

[0182] The first calculation module is configured to: perform dynamic economic scheduling according to the effective set method of quadratic programming under the feasible solution of preprocessing, and use clear equivalence class to process opportunity constraints, and calculate the objective function at the same time;

[0183] The second calculat...

Embodiment 4

[0189] Embodiments of the present disclosure provide a storage medium on which a program is stored, and when the program is executed by a processor, implements the steps in the method for combining the power grid units at the receiving end considering rotational inertia constraints as provided by the foregoing embodiments, including:

[0190] S01, obtain the original data of the receiving end power grid and the control parameters of the BPSO algorithm, and set t=0, the maximum number of iterations T and the population size n, where t is the number of iterative particles;

[0191] S02, preprocessing, to form a feasible solution that satisfies the constraints of spinning reserve and start and stop time;

[0192] S03, under the feasible solution of preprocessing, dynamic economic scheduling is performed according to the effective set method of quadratic programming, and the clear equivalence class is used to process opportunity constraints, and the objective function is calculated a...

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Abstract

The invention provides a receiving end power grid unit combination method considering rotational inertia constraint, and belongs to the technical field of power grid unit combination. According to the specific scheme, original data of a receiving-end power grid and control parameters of a BPSO algorithm are obtained; performing pretreatment; under the feasible solution of preprocessing, calculating an objective function at the same time; calculating a target formula, updating the speed and position of the particle swarm, and generating new particles; carrying out dynamic economic scheduling on the generated new particles according to an effective set method of quadratic programming, carrying out chance constraint processing by using a clear equivalence class, and calculating a target function at the same time; and combining and sorting the new and old particle swarms, and determining an optimal individual. The moment of inertia of the generator and the wind power plant can be considered at the same time, the moment of inertia of the whole receiving-end power grid is analyzed and calculated on the basis, and the problem of power grid moment of inertia evaluation is solved. The invention further discloses a receiving end power grid unit combination system considering the rotational inertia constraint.

Description

technical field [0001] The present application relates to the technical field of power grid unit combination, and in particular, to a method and system for combining power grid units at the receiving end considering the constraints of rotational inertia. Background technique [0002] The statements in this section merely provide background related to the present application and do not necessarily constitute prior art. [0003] UHVDC has natural advantages in large-scale, long-distance, and high-efficiency power transmission technology, so it has become the main way to solve the problem of reverse energy and load distribution. my country has successively completed and put into operation Lugu, Zhaoyi, Yanhuai, and Tianzhong inter-regional UHV DC transmission projects, forming a pattern of AC-DC hybrid power grids. The power grid of the load center gradually becomes the AC-DC hybrid receiving-end power grid, and the DC gradually replaces the generator set, which greatly reduce...

Claims

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Application Information

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IPC IPC(8): G06F30/27G06N3/00G06Q10/06G06Q50/06G06F111/04G06F113/04
CPCG06F30/27G06N3/006G06Q10/0631G06Q10/0635G06Q50/06G06F2111/04G06F2113/04Y02E60/60
Inventor 刘文学张冰蒋哲梁正堂杨冬马欢周宁赵康李山张志轩房俏田浩郝旭东程定一麻常辉汪挺
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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