An evaluation device and method for a secondary signal transmission system of a smart substation

Abstract

The invention provides an intelligent substation secondary signal transmission system evaluation apparatus. The intelligent substation secondary signal transmission system evaluation apparatus comprises a parameter acquisition module for acquiring unit model parameters of an intelligent substation secondary signal transmission system, a unit model building module for generating model function of every unit according to the model parameters, a model processing module for performing cascading and order reducing processing on model function of every unit of the intelligent substation secondary signal transmission system in accordance with a topological structure and a circuit theory for forming overall model function of the intelligent substation secondary signal transmission system, and a model evaluation module for simulating the intelligent substation secondary signal transmission system according to the model function for simulating steady state and transient characteristics of various input signals for evaluation and testing of frequency characteristics of an intelligent substation. The intelligent substation secondary signal transmission system evaluation apparatus can be easily applied to evaluation and research of intelligent substation secondary signal transmission with different configurations.

Description

technical field [0001] The invention relates to a secondary signal transmission system of an intelligent substation, in particular to an evaluation device and method for a secondary signal transmission system of an intelligent substation. Background technique [0002] Smart substation is a key component of smart grid, and it is the trend and direction of development. Smart substation replaces conventional TA and TV with unconventional transformers; replaces conventional cable loops with a switched network communication system formed by optical fiber and Ethernet; realizes the operation and control of substations with integrated smart electrical equipment; The redundancy of information replaces the redundancy of conventional substation devices; the system is constructed with a layered distributed design, and on the basis of intelligent primary equipment, part of the control functions of conventional substations are delegated to the lower layer, thereby making the substation m...

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Problems solved by technology

[0005] The invention patent with the patent application number of 201110223085.6 "Automatic Modeling Method for Intelligent Substation Interval Device" provides a modeling method for the intelligent substation interval device; the invention patent with the patent application No. "Model Modeling Method" provides a modeling method for intelligent substation fault recording devices; the invention patent "A Simulation Modeling Method for Intelligent Substation Merging Unit" with the patent application number of 201310228429.1 provides a construction method for smart substation merging unit The above patents are all aimed at modeling a certain component device in the secondary signal transmission system of the smart substation. There is no unified method for modeling and evaluating and analyzing the secondary signal transmission system of the entire smart substation.

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