CN203287457U - Remote debugging system of on-site installation type protective relaying device - Google Patents

Abstract

The utility model relates to a remote debugging system of an on-site installed relay protection device in an intelligent substation, which belongs to the technical field of testing. The utility model is provided with secondary equipment and an optical switching device inside the outdoor cabinet, and a debugging information host and a digital protection tester are installed in the main control room of the substation; the output debugging port of the secondary equipment is connected to the debugging information host in the main control room through a switch. above; the secondary equipment is connected to other secondary equipment through optical fiber, and there is a spare optical fiber connected between the secondary equipment and the digital protection tester. In the cold area, when the relay protection device installed locally in the substation is debugged, the staff can operate the current and voltage standard values set by the relay protection tester in the control room, and send the digital signal to the relay through long-distance optical fiber transmission. The electrical protection device is installed on site, and the response of the protection device is monitored in the control room at the same time, which solves the problem of testers working continuously in cold outdoors.

Description

A Remote Debugging System for Locally Installed Relay Protection Devices

technical field

The utility model relates to a remote debugging system of an on-site installed relay protection device in an intelligent substation, which can be widely used in the debugging of outdoor intelligent equipment in the intelligent substation, and belongs to the technical field of testing.

Background technique

Modern smart substations use a lot of computer technology, communication technology and sensor technology. The rapid development of new technologies brings with it the rapid development of substation automation technology. Based on communication network technology, they integrate various relay protection devices, The automatic device, RTU (remote terminal) and the dispatching terminal are connected. In order to achieve high-quality, high-speed, and high-flexibility economic operation of the substation, the local secondary equipment of the smart substation can optimize this problem to a large extent. The digital substation provides a platform and carrier for the on-site release of the secondary equipment of the smart substation. The on-site release of the secondary equipment closely connects the protection, monitoring, and metering of the scattered arrangement through the optical fiber network, forming functional dispersion, physical dispersion, and risk dispersion. , Information centralization, collection and sharing, improve the anti-interference ability of the whole system, and reduce the search work of maintenance personnel.

The secondary equipment, especially the intelligent terminal, is put down on the ground, and the cable connection is compressed between the primary equipment and the outdoor cabinet, and the engineering cost of the cable is significantly reduced. The anti-interference ability of the long cable is poor. Except for the power cable that must be used for the main control room equipment, the others are all optical fiber outlets or power grid cables.

In this context, the commissioning of on-site installed relay protection devices is about to face a series of problems, the most prominent problem is how to complete the calibration of secondary equipment efficiently and accurately in outdoor harsh atmospheric environments. Especially in extreme regions such as Northeast China, where the outdoor temperature is very low in winter, testers are not suitable for continuous outdoor work. Therefore, it is necessary to explore and research a new test method so that testers can complete the debugging and inspection of outdoor equipment indoors.

Utility model content

Aiming at the deficiencies in the above-mentioned prior art, the utility model provides a remote debugging system of an on-site installation type relay protection device, the purpose of which is to realize the on-site installation of the relay in the control room of the intelligent substation. Debugging and verification of protective devices.

The utility model is achieved through the following technical solutions:

A remote debugging system for on-site installation relay protection devices is equipped with secondary equipment and optical switching devices inside the outdoor cabinet, and a debugging information host and digital protection tester are installed in the main control room of the substation; the secondary equipment output debugging The port is connected to the debugging information host in the main control room through the switch; the secondary equipment is connected to other secondary equipment through optical fibers, and a spare optical fiber is connected between the secondary equipment and the digital protection tester.

Advantage and effect of the present utility model are:

It can realize the debugging and verification of the relay protection device installed locally in the control room of the smart substation. In cold regions such as Northeast China, when debugging the relay protection devices installed locally in substations, the staff operate the current and voltage standard values set by the relay protection tester in the control room, and send digital signals to The relay protection device is installed on site, and the response of the protection device is monitored in the control room at the same time, which solves the problem of testers working continuously in cold outdoors.

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

Description of drawings

Fig. 1 is a schematic diagram of the remote debugging system of the on-site installation type relay protection device of the present invention.

Detailed ways

The utility model relates to a remote debugging system of an on-site installation type relay protection device. The outdoor cabinet is equipped with secondary equipment and optical switching devices, and the main control room of the substation is equipped with a debugging information host and a digital protection tester, and exchanges data through reserved optical fibers and locally installed protection devices. The output debugging port of the secondary equipment is connected to the debugging information host in the main control room through the switch; the secondary equipment is connected to other secondary equipment through optical fibers, and a spare optical fiber is connected between the secondary equipment and the digital protection tester.

The remote debugging method of the on-site installation type relay protection device described in the utility model needs to reserve and lay the optical fiber for testing between the protection device of the outdoor cabinet and the main control room during the construction of the substation. The optical switching device realizes the switching between the running optical fiber and the standby optical fiber on the secondary equipment device. The optical fiber switching method described above can be switched by remote control. If there is no optical switching device, when the secondary equipment is debugged, the tester can manually switch the optical switch by manually plugging and unplugging the optical fiber in the outdoor cabinet. The secondary equipment outputs the debugging port, which is connected to the host in the main control room through the switch. The debugging information host can be regarded as the "remote liquid crystal" of the secondary equipment, which can obtain and monitor the analog, switching, and reports of the secondary equipment. When it is necessary to debug the secondary equipment of the outdoor cabinet, the optical fiber is transferred to the spare optical fiber, and the digital protection tester in the main control room is used to increase the amount; the feedback information of the secondary equipment is checked through the debugging information host to achieve the purpose of debugging. The schematic diagram of the remote debugging system is shown in Figure 1.

The remote debugging method of the locally installed relay protection device is as follows:

(1) Manually or automatically switch the secondary equipment SV/GOOSE fiber to the backup fiber;

(2) The digital protection tester imports the CID file of the device under test, and configures the 61850 message information between the device under test;

(3) The digital protection tester simulates the normal load of the power system and provides current and voltage sampling values to the device under test. The tester checks the analog quantity sent to the background by the secondary equipment on the debugging information host in the main control room to judge the digital protection. Whether the communication between the tester and the device under test is normal, if there is no sampling value, check the fiber optic connection or the configuration of the digital protection tester to confirm that the data communication between the two is normal;

(4) Use the digital protection tester software to simulate power system faults, check the response of the secondary equipment on the debugging information host, and perform functional debugging of the secondary equipment.

Claims (1)

1. A remote debugging system for an on-site installation type relay protection device, characterized in that: The outdoor cabinet is equipped with secondary equipment and optical switching devices, and the main control room of the substation is equipped with a debugging information host and a digital protection tester; the output debugging port of the secondary equipment is connected to the debugging information host in the main control room through a switch; the secondary equipment It is connected to other secondary equipment through optical fiber, and a spare optical fiber is connected between the secondary equipment and the digital protection tester.

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