A simulation device and simulation method for the characteristics of a smart substation merging unit

A technology of intelligent substation and simulation device, which is applied in the direction of measuring device, measuring electricity, measuring electric variables, etc.

Active Publication Date: 2016-09-21
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing merging unit simulation device cannot better realize the influence of the above characteristics of merging unit on smart substations

Method used

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  • A simulation device and simulation method for the characteristics of a smart substation merging unit
  • A simulation device and simulation method for the characteristics of a smart substation merging unit

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Experimental program
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Embodiment Construction

[0042] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0043]The present invention provides a simulation device for the characteristics of an intelligent substation merging unit, the structure diagram of which is as follows figure 1 As shown, the structure of the present invention takes dual-core CPU, FPGA, and the DDR2 memory of the storage system as the core, plus peripheral components such as sensors, analog-to-digital converters, CPLDs, optical fiber Ethernet modules, optical serial drivers, and constant temperature crystal oscillators. Sensors, analog-to-digital converters, CPLDs, CPUs and FPGAs are connected in sequence; the FPGA is connected to the optical serial driver and the fiber optic Ethernet module, and the constant temperature crystal oscillator is connected to the CPU and the FPGA respectively; the device is provided with a memory system and an electrical Ethe...

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Abstract

The invention relates to a dynamic simulation device and a simulation method for each voltage level of a power system, in particular to a simulation device and a simulation method for characteristics of an intelligent substation merging unit. The device conforms to the DL / T860 communication protocol. The function of this device is to receive the secondary signals of multiple traditional voltage and current transformers and convert them into optical digital signals conforming to DL / T860.92 and GB / T20840.8. At the same time, it can Simulate various characteristics of the merging unit, including synchronization and out-of-synchronization characteristics, frame loss, delay, delay deviation, delay jitter, sampling frequency deviation and jitter of the sampled value message, and can modify the synchronization flag of the sampled value message in real time , status word, quality bit, which can simulate sampling value deviation and superimpose harmonic components. The invention solves the problem that it is difficult to realize the simulation of abnormal conditions of electronic transformers and merging units in the dynamic simulation process of the intelligent substation, and can be widely used in the research and testing of the reliability of the secondary equipment of the intelligent substation.

Description

technical field [0001] The invention relates to a dynamic simulation device and a simulation method for each voltage level of a power system, in particular to a simulation device and a simulation method for characteristics of an intelligent substation merging unit. Background technique [0002] As one of the core contents of smart grid, the research and construction scale of smart substation will also be greatly developed. In the smart substation, all the connections between secondary equipment adopt high-speed network communication, and the manufacturing of secondary equipment is based on standardized and modular design, so that the sharing of data and resources is maximized. Among them, the relay protection device, measurement and control device, fault recording device and safety automatic device and other interval layer equipment obtain the voltage and current of the primary equipment no longer directly from the secondary signal of the transformer based on the cable, but ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/042G01R31/00
Inventor 李仲青周泽昕陆伟周春霞詹荣荣杜丁香张鹏程元张福雪
Owner STATE GRID CORP OF CHINA
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