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High-permeability wind power primary and secondary backup coordination control method

A high-penetration, coordinated control technology, applied in wind power generation, single-grid parallel feeding arrangement, etc., can solve the problem that the primary and secondary backup coordination control cannot be well solved, endanger the system security, stable operation, and the power grid cannot Realize problems such as economic operation, and achieve the effect of ensuring safe and stable operation, improving efficiency, and reducing the number of adjustments

Inactive Publication Date: 2014-04-09
HARBIN INST OF TECH
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Problems solved by technology

If the backup is insufficient, the power quality will deteriorate, and even endanger the safe and stable operation of the system in an emergency. If the backup is too large, it will cause waste of capacity, and the power grid cannot achieve economical operation.
The problem of how to realize the coordinated control of primary and secondary backup after large-scale wind power is connected to the grid has not yet been well resolved nationwide.

Method used

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  • High-permeability wind power primary and secondary backup coordination control method
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  • High-permeability wind power primary and secondary backup coordination control method

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Embodiment Construction

[0029] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings, but it is not limited thereto. Any modification or equivalent replacement of the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention should be covered by the present invention. within the scope of protection.

[0030] The primary and secondary standby coordinated control method of high-permeability wind power provided by the present invention comprises the following steps:

[0031] 1. Primary FM standby modeling

[0032] In order to strengthen the "openness, fairness and impartiality" of the primary frequency regulation, my country generally gives a unified recommendation value for the dead zone range of the speed control system of the generator set. The frequency f dead zone range generally promoted and implemented is [49.967Hz, 50.033Hz] . After implementin...

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Abstract

The invention relates to a high-permeability wind power primary and secondary backup coordination control method, and belongs to the technical field of electric power system control. According to the method, the principle that primary backup is used at first and secondary backup serves as transition is used, and then primary frequency modulation backup capacity is supplemented so that the quick frequency modulation capacity can be abundant; the fluctuation window principle is used for calculating the secondary frequency modulation backup capacity of a power grid so as to realize coordinate control of the primary frequency modulation backup and the secondary frequency modulation backup and guarantee safe and stable running of the power grid. During running of a high-permeability wind power grid, through coordinate matching of the first frequency modulation backup and the secondary frequency modulation backup, wind power intermittent disturbance can be handled, and the system frequency can be stabilized; when the fluctuation window principle is used for conducting secondary backup distribution, it can be guaranteed that a power generating unit can complete a secondary frequency modulation task, meanwhile, the modulation times can be obviously reduced and the secondary backup efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field of power system control, and relates to a coordinated control method for primary and secondary backup of wind power. Background technique [0002] As the proportion of wind power connected to the grid increases year by year, especially in the case of high-penetration wind power connected to the grid, the randomness and volatility of wind power make the contradiction between power supply and demand balance intensify. Traditional backup dispatching methods are used for power active power balance and real-time control Very difficult. The power grid requires a real-time balance system with stable frequency. At this time, the power grid needs to have sufficient reserve capacity to quickly respond to the imbalance between power supply and demand caused by irregular wind power output. If the reserve is insufficient, the power quality will deteriorate, and even endanger the safe and stable operation of the system i...

Claims

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Application Information

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IPC IPC(8): H02J3/46
CPCY02E10/763Y02E10/76
Inventor 夏天宇冯慧波柳进
Owner HARBIN INST OF TECH
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