Method for simulating power grid interlocking fault based on complicated network theoretical calculation and correction control

A technology for correction control and cascading failures, applied in AC network circuits, emergency handling AC circuit layout, calculations, etc.

Active Publication Date: 2015-05-20
CHONGQING UNIV
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  • Description
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  • Application Information

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Problems solved by technology

The main disadvantages of this method are: ①The correction control measures adopt the assumption that the parameters of each circuit can be adjusted, which is inconsistent with the actual system operation; ②Assume that each circuit of the power system can be installed with flexible AC transmission (FACTS ) components, which is difficult to realize in practice; ③ only by adjusting the correction control measures of line parameters, because the power flow analysis is not performed on the power grid after each fault occurs, it cannot effectively reduce and suppress the system after the node is removed. Overload leads to non-convergence of power flow, and even the occurrence

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  • Method for simulating power grid interlocking fault based on complicated network theoretical calculation and correction control
  • Method for simulating power grid interlocking fault based on complicated network theoretical calculation and correction control
  • Method for simulating power grid interlocking fault based on complicated network theoretical calculation and correction control

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Embodiment

[0092] Such as figure 1 , 2 As shown, the specific steps of a power grid cascading failure simulation method based on complex network theory and correction control are as follows:

[0093] (1) Calculate the optimal power flow of the power system under normal conditions

[0094] 1) Enter the basic parameters

[0095] First enter the basic parameters of the power system. The basic parameters of the power system include node number (1,2,..., 30), node type, node corresponding voltage level, active power load of each node (P d ) And reactive power load (Q d ), the number of the node connected to the generator, the active power output by each generator (P g ) And the upper limit of active power (P g,max ) And lower limit (P g,min ), the reactive power output by each generator (Q g ) And the upper limit of reactive power (Q g,max ) And the lower limit (Q g,min ), the installed capacity of each generator (P gG ), the upper limit of the voltage amplitude of each node (U max ) And lower ...

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Abstract

The invention relates to a method for simulating a power grid interlocking fault based on complicated network theoretical calculation and correction control, and belongs to the technical field of safety and reliability protection of power systems. The method comprises the following steps of utilizing a computer, and performing procedures; firstly, calculating the optimum trend of a power system under the normal condition; calculating the betweenness of each node, determining a betweenness threshold value of each node of the power system, simulating the interlocking fault of the power system, and finally calculating the total loss load of the interlocking fault. The method has the advantages that under the condition of meeting the safety running constraint requirement of the power system, the influence of correction control on the interlocking fault can be simulated by adjusting the output power and reduced load of a power generator, the influence of the change of load distribution on the interlocking fault can be reflected, and the propagation process of the interlocking fault of the power system can be well reflected; the method is widely applied to simulate the interlocking fault of the power system, is particularly suitable for simulating the interlocking fault of large complicated power systems, and can provide scientific basis for preventing the occurrence of the interlocking fault of the power system.

Description

Technical field [0001] The invention belongs to the technical field of power system safety and reliability protection, and specifically relates to a grid cascading failure simulation method based on complex network theory and correction control. Background technique [0002] With the continuous expansion of the scale of the power system and the continuous growth of power generation, the safety and reliability of the operation of the power system has received more and more attention, and the safety analysis of the power system has become increasingly important. Power system safety analysis is an analysis of the operating state of the system after an anticipated accident. Predicted accidents refer to imaginary accidents to analyze the safety and reliability of the power system. For example, it is assumed that generators, lines, transformers, and even power plants or substations are out of operation due to a failure or attack. After an accident is expected, the power flow of the po...

Claims

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Application Information

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IPC IPC(8): H02J3/00G06F17/50
CPCG06F30/367H02J3/00H02J3/001H02J2203/20Y02E60/00
Inventor 王韶刘沛铮张煜成黄晗王理丽张知张文龙邓先芳
Owner CHONGQING UNIV
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