Unlock instant, AI-driven research and patent intelligence for your innovation.

Data buffer method for real-time closed-loop test of relay protector in electric power system

A relay protection device and data buffering technology, applied in emergency protection circuit devices, emergency protection devices with automatic disconnection, measuring devices, etc., to achieve the effect of expanding the range of step selection

Inactive Publication Date: 2004-11-24
深圳市殷图科技发展有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the calculation of the change point takes several times longer than the calculation of the normal point, when testing the relay protection device in real time, in order to meet the real-time requirements of the simulation calculation at the change point, a larger step size has to be adopted, which affects Test accuracy

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Data buffer method for real-time closed-loop test of relay protector in electric power system
  • Data buffer method for real-time closed-loop test of relay protector in electric power system
  • Data buffer method for real-time closed-loop test of relay protector in electric power system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention provides a data cache method for real-time closed-loop testing of power system relay protection devices, and its implementation process is as follows:

[0017] The circuit breaker module of the power system has a delay of about 40 to 60 ms from receiving the trip signal of the relay protection device to actually tripping, that is, there is a dead zone. In the test system, the relay protection device controls the digital circuit breaker module model in the microcomputer digital simulation system, and the action delay of the digital circuit breaker module is set as T b , take the data cache time T h =T b .

[0018] The data caching method includes the following steps:

[0019] Simulation test preparation: the microcomputer builds the system and prepares to start the simulation test. The digital signal processor (Digital Signal Processing, DSP) of the communication card loads the operation program, and waits for the test start command of the micro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A data buffer method for real-time closed-loop test of relay protector in electric power system is disclosed, which belongs to real-time simulation test. At each simulation step point, a group of voltage-current data is calculated out and then stored in data buffer until the simulation time reaches the time Th of data buffer. Then the simulation step deltat is used as period and the data is timely sent to be relay protector to be tested. The action signal of said relay protector is fed back to digital breaker. After the breaker is stripped, the new model is used to further simplate for interactive test. Its advantage is high test integrity.

Description

technical field [0001] The invention relates to a data cache method for real-time closed-loop testing of a power system relay protection device, belongs to the technical field of digital real-time simulation testing, and particularly relates to a real-time closed-loop test of a power system relay protection device. Background technique [0002] The applicant applied for a microcomputer-based power system dynamic real-time simulation device on April 19, 2002. This article describes a real-time closed-loop test power system equipment simulation device. The schematic diagram of the device is figure 1 shown. In the power system electromagnetic transient digital simulation of the microcomputer part of the device, the implicit trapezoidal integral method is used to obtain the transient equivalent calculation circuit of the simulated system, and the node equation is formed to solve the node voltage, and the system is solved at each step point . When the system fails or operates,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G01R31/327H02H3/00H02H3/38H02H7/00
Inventor 郑三立梁旭胡明亮周仲晖孙明李娜张锦孚
Owner 深圳市殷图科技发展有限公司