Distributed test terminal of LTE wireless communication intelligent substation test system

Abstract

The invention relates to a distributed test terminal of an LTE wireless communication intelligent substation test system, including an FPGA module, a first to a second Ethernet transceiver module, a wireless one-way broadcast module, a wireless two-way broadcast module, a GPS timing module, a GPS antenna, and a DA conversion Circuit, drive module, Ethernet optical fiber interface module, and first to second 4-way optical fiber interfaces; its beneficial effects are: easy to carry and assemble, and can be widely used in installation and commissioning tests, outage maintenance tests, and technical performance evaluations of substation sites; It is connected with remote equipment through LTE wireless local area private network, and does not require commissioning personnel to carry additional optical fibers; it can accurately simulate the operating status of most power systems, and investigate the working conditions of secondary equipment such as protection, measurement and control; simultaneously access multiple A interval-related protection, measurement and control device realizes a complete test of the secondary system of the whole station and optimizes the on-site workflow.

Description

technical field [0001] The invention belongs to the technical field of intelligent substation testing, and relates to a distributed testing terminal of an LTE wireless communication intelligent substation testing system. Background technique [0002] Based on the DL860 standard (IEC61850 standard), the smart substation adopts advanced technologies such as digital sampling, intelligent primary equipment and optical fiber Ethernet. It has the characteristics of digitalization, networking and information sharing in the whole station. Detection, commissioning and testing put forward higher requirements. [0003] Smart substation testing is a key link to ensure the smooth operation of smart substations. The reliability and effectiveness of secondary equipment and system functions in smart substations depend on the guarantee of testing technology. The test of the secondary equipment of the smart substation should not only include the unit detection of the merging unit, intelligen...

AI Technical Summary

Problems solved by technology

[0005] 1) Smart substations have the characteristics of digital communication, networking, and information sharing across the station. Traditional secondary equipment test tools can only send and receive test data in a fixed format, and complete individual tests for specific equipment and single functions. The reliability and effectiveness of the overall function;

[0006] 2) The configuration modes of the secondary system of the smart substation in operation are diverse, the manufacturers of the secondary equipment are complicated, and there are large differences in the equipment networking mode and the communication protocol adopted. At present, there is no test tool that can be used universally for different types of smart substations test tasks;

[0007] 3) At present, the protection of the interval layer of the intelligent substation is arranged in the protection room, while the process layer merging unit and the intelligent terminal are scattered and arranged on the spot; in view of this distributed layout, affected by the space distance and the environment, the entire group of intervals in the substation site is connected to the flow pressure and function. It is difficult to realize the transmission, which brings certain hidden dangers to the safe and stable operation of the substation;

[0008] 4) It is impossible to conduct a comprehensive performance test on the secondary equipment before installation, so this part of the work can only be arranged in the on-site debugging link, which makes the debugging work extremely heavy

Images