A control method for power grid security and stability considering the interests and fairness of wind farms

A stable control method and power grid security technology, applied in computing, electrical components, circuit devices, etc., can solve problems that do not conform to the principle of fairness, cannot meet the demands of fairness of interests of wind farm owners, and achieve the goal of improving the level of refinement Effect

Inactive Publication Date: 2017-06-16
NANJING NARI GROUP CORP +4
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The traditional security control strategy based on the principle of "offline budget and real-time matching" to control or cut off the preset wind farms obviously does not conform to the principle of fairness and cannot meet the demands of wind farm owners for fairness of interests

Method used

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  • A control method for power grid security and stability considering the interests and fairness of wind farms
  • A control method for power grid security and stability considering the interests and fairness of wind farms
  • A control method for power grid security and stability considering the interests and fairness of wind farms

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Embodiment Construction

[0025] The present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0026] Such as figure 1 Shown, the present invention comprises the following steps:

[0027] 1) Online refresh of key transmission sections and their transmission limits, controllable space and their sensitivity ranking

[0028] Periodically run the online security and stability early warning system of the power grid every ΔT time, and refresh the expected fault set concerned under the current time section through online simulation analysis n represents the total number of expected faults, and calculates the transmission limit value P of the critical section of wind power transmission after each fault is cleared, taking into account the constraints of transient stability and thermal stability max :{P max1 ,P max2 ,...,P maxn}.

[0029] Select N wind farms that can participate in the control in this area to form an initial controllable space ...

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Abstract

The invention discloses a grid security and stability control method involved in wind power plant benefit fairness, and belongs to the technical field of power system operation control. An online security and stability prewarning system is organically combined with a security and stability control system, a grid operation work condition is calculated and analyzed on line, a key transmission section, the transmission limit of the key transmission section, a controllable wind power plant set and sensitivity of the controllable wind power plant set to the key transmission section are refreshed, then a generator tripping control range is determined in real time according to a sensitivity sequence, and generator tripping controlling quantity is averagely distributed according to contribution to security and stability problems in the selected control range. According to the method, requirements of a wind power base for safe and stable operation are met, meanwhile, requirements of the wind power plant for fair benefits in emergency control are met, and the refinement level of wind power emergent control is improved.

Description

technical field [0001] The invention belongs to the technical field of power system operation control. More precisely, the invention relates to a method for formulating and implementing a power grid security and stability control strategy that takes wind farm interests and fairness into consideration. Background technique [0002] "Scale development, centralized grid connection" has become one of the main modes of wind power development and utilization in my country. In terms of grid security and stability control technology adapted to large-scale wind power bases, the architecture and optimal configuration principles of wind power base safety and stability control systems have been explored in China. However, how to determine the control mode of large-scale wind power bases, how well the control framework Issues such as the uncertainty of renewable energy have not yet matured and can be directly used in engineering practice research results. Most of the safety and stabilit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00G06Q50/06
CPCY02E40/70Y04S10/50
Inventor 常康宋晓芳薛峰徐泰山汪宁渤马彦宏段慧周强周识远
Owner NANJING NARI GROUP CORP
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