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Method for recognizing transmission section power limit interval of power system transient stability

A technology of transmission section and power limit, applied in reactive power compensation, AC network voltage adjustment, etc., can solve the problems of difficult to predict the relative change ratio of different bus load, difficult to accurately predict the change of bus load, preset and other problems

Active Publication Date: 2011-02-09
NARI TECH CO LTD
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Problems solved by technology

[0003] With the continuous increase of new energy power generation scale and the gradual advancement of the power market, it is difficult to pre-set the adjustment method of generators according to the requirements of dispatching operators. In addition, the change of bus load is also difficult to predict accurately. The difference between different bus loads The proportion of relative change is even more difficult to predict

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  • Method for recognizing transmission section power limit interval of power system transient stability
  • Method for recognizing transmission section power limit interval of power system transient stability
  • Method for recognizing transmission section power limit interval of power system transient stability

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Embodiment Construction

[0013] The method of the present invention will be described in detail below with reference to FIG. 1.

[0014] Step 1 in Figure 1 describes the transient safety and stability quantitative evaluation for the current operation mode of the power grid, that is, for the current operation mode of the power grid, the transient power angle stability quantitative evaluation method and the transient voltage safety and stability quantitative evaluation method are used to evaluate the transient power transmission section. The transient safety and stability assessment of each fault is carried out separately for each fault, and the transient power angle stability mode of each fault (transient power angle stability margin, dominant grouping mode of generators, critical generator group and remaining power generation) is obtained. Participation factor of each generator in the cluster) and transient voltage safety and stability mode (transient voltage safety and stability margin, load participatio...

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Abstract

The invention discloses a method for recognizing a transmission section power limit interval of power system transient stability, which comprises the steps of: respectively carrying out transient security stability evaluation on faults in a transmission section transient security stability check fault set by adopting a transient angle stability quantitative evaluation method and a transient voltage security stability quantitative evaluation method to obtain a transient angle stability mode and a transient voltage security stability mode of each fault; respectively calculating impact factors of each generator and each load to the transmission section power limit according to participation factors of the generators and the load, the sensitivity of the power to the transmission section power, the transient angle stability margin and the transient voltage security stability margin; and calculating the minimum value and the maximum value of the transmission section power limit through regulating powers of the generators and the loads according to the impact factors of the generators and the loads to the transmission section power limit.

Description

Technical field [0001] The invention belongs to the technical field of power system calculation and analysis. Background technique [0002] Transmission section power is a key indicator for power system dispatchers to monitor the safe operation of the power grid. The calculation and analysis of the power system transient safe and stable section limit power is one of the important contents of the safe and stable economic operation and control of the power system. The current transmission section power limit The calculation method is that the power grid dispatching operator first determines the power adjustment method of the generator and load based on experience, and then through the transient safety and stability time domain simulation calculation, the power limit of the transmission section is finally determined. In fact, the power limit of the transmission section is closely related to the operation mode and power adjustment mode of the grid. That is to say, if the actual opera...

Claims

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Application Information

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IPC IPC(8): H02J3/16
CPCY02E40/34Y02E40/30
Inventor 徐泰山鲍颜红彭慧敏马明姚海成李碧君薛峰方勇杰薛禹胜
Owner NARI TECH CO LTD
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