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Cascading failure parallel simulation method for relay protection and safety automata

A safe, automatic, and relay-protected technology, applied in the field of simulation, can solve problems such as difficulty for users to see calculation results, large number of custom models, slow calculation, etc., and achieve good scalability and adaptability, small communication volume in interface design, high efficiency effect

Active Publication Date: 2014-02-26
STATE GRID CORP OF CHINA +2
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Problems solved by technology

[0005] However, the relay protection and safety device models built by user-defined modeling contain a large number of basic function boxes. Taking line distance protection as an example, conventional distance protection requires about 100 basic logics under the custom modeling framework function box
For the entire power system, including main protection, backup protection, and automatic devices, the number of user-defined models is very large, resulting in slow calculations in conventional serial electromechanical transient simulations, and it is difficult for users to see the calculation results for a long time

Method used

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  • Cascading failure parallel simulation method for relay protection and safety automata
  • Cascading failure parallel simulation method for relay protection and safety automata
  • Cascading failure parallel simulation method for relay protection and safety automata

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Embodiment Construction

[0067] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0068] Key terms used in the present invention are defined as follows:

[0069] There is a close cooperation between a large number of relay protection and safety automatic devices in the cascading fault power system, especially between adjacent devices. This coordination relationship is reflected in the setting value set by each device to reflect the operating state of the power grid. Due to the interrelationship between electrical quantities that reflect the operating state of the power system, when a certain fault occurs, the operating state of the power grid may be equal to or exceed the setting value of some devices, making it meet the conditions for action, and then causing other faults to occur. This process is called cascading failure.

[0070] Relay protection is a device in which one or more protection elements (such as relays) and logic elements ...

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Abstract

The invention provides a cascading failure parallel simulation method for relay protection and safety automata. The method includes the steps of modeling the relay protection and safety automata by means of customizing; partitioning a network and distributing relay protection and safety automata models; initializing a communication interface; calculating input / output quantities of the relay protection and safety automata models; initially calculating the relay protection and safety automata models; processing output quantities of the relay protection and safety automata models; performing simulation calculation on a power grid and the relay protection and safety automata models. Multiple sub-grid processes and external processes are deployed and the power grid and the relay protection and safety automata are parallelly simulated, by a parallel calculation structure based on MPI (message passing interface); the sub-grid processes and the external processes can be deployed to different computer nodes; modeling and simulation for mass relay protection and safety automata is achieved by object-oriented design, and simulation is well extensible and applicable.

Description

technical field [0001] The invention relates to a simulation method, in particular to a parallel simulation method for cascading failures of relay protection and safety automatic devices. Background technique [0002] The electromechanical transient simulation of large-scale power grids is still one of the important means to study cascading faults in large-scale power grids. The main process is to simulate the cascading failure mode of the power grid by establishing a power grid model and component model that conform to the actual physical process of the power grid, calculate and analyze the evolution process and consequences of the cascading failure of the power grid, and provide measures to prevent the spread of cascading failures in the power grid Wait. [0003] The difficulty of cascading fault simulation in the electromechanical transient simulation of large-scale power grids lies in the simulation of the characteristics of some automatic action devices in the power gr...

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Application Information

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IPC IPC(8): G06F9/455
Inventor 余晓鹏徐得超张振安李亚楼刘巍徐树文朱全胜夏天朱旭凯
Owner STATE GRID CORP OF CHINA
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