CN216526861U - Comprehensive control system of 500kV and below large power transformer test station - Google Patents

Abstract

The utility model provides a comprehensive control system of a large power transformer test station of 500kV or below, which relates to a control system of a transformer test station, and comprises a main controller, a first sub-controller and a second sub-controller, wherein the first sub-controller is used for controlling a generator set and a voltage regulator; the second sub-controller is used for controlling the transformer, the mutual inductor, the capacitor and the main switch; the power analyzer monitors the power of the transformer and is in signal connection with the main controller, and the power analyzer controls the second sub-controller to perform voltage reduction operation on the transformer or perform disconnection operation on the main switch after monitoring that the power of the transformer is abnormal; the main controller is connected with the computer, the storage device is arranged in the computer, after the main controller controls the second sub-controller to perform transformer voltage reduction operation or main switch disconnection operation, data are transmitted to the computer and stored, and meanwhile, the abnormal signals are transmitted to the display. The device has the advantages of good safety performance and rapid and convenient data recording.

Description

Comprehensive control system of 500kV and below large power transformer test station

Technical Field

The utility model relates to a control system of a transformer experiment station, in particular to a comprehensive control system of a large-scale power transformer experiment station of 500kV or below.

Background

In the fire fighting operation, the comprehensive control system of the power transformer test station is specially designed for routine testing of the transformer, and the system is tested according to IE60076 and IEEEC and the latest edition of European standard G7 series.

The control system is used for completing the tests of no-load, impedance, temperature rise and the like of the transformer leaving factory, and the current measurement and control software is formed by combining a plurality of small measurement and control systems. However, the controller system in the prior art has the disadvantages of weak comprehensive performance, poor safety protection performance of the system, and easy occurrence of the risk of breakdown of the experimental sample, and meanwhile, data storage and recording are mostly carried out manually.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides a novel comprehensive control system of a large power transformer test station of 500kV or below, which can solve the technical problems in the background art.

The utility model is realized by adopting the following technical scheme: a comprehensive control system of a 500kV and below large-scale power transformer test station comprises a main controller, a first sub-controller and a second sub-controller, wherein the main controller and the first sub-controller are connected through a network cable;

the first sub-controller is used for controlling the generator set and the voltage regulator;

the second sub-controller is used for controlling the transformer, the mutual inductor, the capacitor and the main switch;

the power analyzer monitors the power of the transformer and is in signal connection with the main controller, and the power analyzer controls the second sub-controller to perform voltage reduction operation on the transformer or perform disconnection operation on the main switch after monitoring that the power of the transformer is abnormal;

the main controller is connected with the computer, the storage device is arranged in the computer, after the main controller controls the second sub-controller to perform transformer voltage reduction operation or main switch disconnection operation, data are transmitted to the computer and stored, and meanwhile, the abnormal signals are transmitted to the display.

In a preferred embodiment of the apparatus of the present invention, the main controller, the first sub-controller, and the second sub-controller are all PLC controllers.

The device of the utility model has the preferred implementation mode that the device also comprises a temperature rise temperature measurer, wherein the temperature rise temperature measurer is a temperature sensor and is transmitted to the main controller through signals;

the temperature rise temperature measurer monitors the temperature change of the transformer, records the temperature change of the transformer during a temperature rise experiment, transmits a signal to the main controller, and the main controller controls the start and the end of the experiment by controlling the second sub-controller;

the main controller transmits the signal to the computer, and the computer forms the temperature variation into a curve chart for display and display.

Compared with the prior art, the power analyzer is arranged to analyze and monitor the power of the transformer or the device to be tested, the main controller can respond to the abnormal power or the abnormal power exceeding the upper limit of the bearing of the device to be tested, the transformer is controlled to perform voltage reduction or the main switch is switched off, the circuit is protected, meanwhile, the main controller is connected to the computer, and the computer can read abnormal data and data monitored by the main controller and record the abnormal data and the data monitored by the main controller in the storage device for storage. The device has a strong safety protection effect and has the advantage of convenient data storage.

Drawings

FIG. 1 is a schematic diagram of the structure of the device of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.

The utility model is further explained with reference to the accompanying drawings, and the comprehensive control system of the 500kV and below large-scale power transformer test station shown in fig. 1 comprises a main controller, a first sub-controller and a second sub-controller, wherein the main controller and the first sub-controller are connected by a network cable;

the first sub-controller is used for controlling the generator set and the voltage regulator;

the second sub-controller is used for controlling the transformer, the mutual inductor, the capacitor and the main switch;

the power analyzer monitors the power of the transformer and is in signal connection with the main controller, and the power analyzer controls the second sub-controller to perform voltage reduction operation on the transformer or perform disconnection operation on the main switch after monitoring that the power of the transformer is abnormal;

the main controller is connected with the computer, the storage device is arranged in the computer, after the main controller controls the second sub-controller to perform transformer voltage reduction operation or main switch disconnection operation, data are transmitted to the computer and stored, and meanwhile, the abnormal signals are transmitted to the display.

The implementation principle of the device of the utility model is as follows: through having set up power analysis appearance and to the transformer or treat that the test device carries out the analysis and the monitoring of power, appear power unusual or surpass treat that the experiment piece bears the upper limit after, main control unit can react, main control unit can control the operation that the second divides the control to step down or break off the master switch to the transformer, carry out the protection of circuit, control generating set and transformer subassembly respectively through first branch controller and second branch controller, it is little and the effectual advantage of control to have the probability of making mistakes, main control unit is connected to the computer simultaneously, the data that unusual data and main control unit were monitored can be read to the computer, keep its record in the accumulator. The device has a strong safety protection effect and has the advantage of convenient data storage.

Furthermore, the main controller, the first sub-controller and the second sub-controller are all PLC controllers.

The temperature measuring device is a temperature sensor and is transmitted to the main controller through signals;

the temperature rise temperature measurer monitors the temperature change of the transformer, records the temperature change of the transformer during a temperature rise experiment, transmits a signal to the main controller, and the main controller controls the start and the end of the experiment by controlling the second sub-controller;

the main controller transmits the signal to the computer, and the computer forms the temperature variation into a curve chart for display and display.

The column controller receives signals of the temperature rise temperature measurer, and then work of the sub-controllers is controlled, the start and the end of the whole temperature rise experiment are controlled, the control effect is good, the control process is more intelligent, meanwhile, the measuring result of the temperature rise temperature measurer is transmitted to the computer, data can be effectively stored, and a curve graph of required temperature change can be displayed through software.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims (3)

1. The utility model provides a large-scale power transformer test station integrated control system of 500kV and below, includes main control unit, first branch controller and second branch controller, its characterized in that: the main controller and the first sub-controller are connected by a network cable;

the first sub-controller is used for controlling the generator set and the voltage regulator;

the second sub-controller is used for controlling the transformer, the mutual inductor, the capacitor and the main switch;

the power analyzer monitors the power of the transformer and is in signal connection with the main controller, and the power analyzer controls the second sub-controller to perform voltage reduction operation on the transformer or perform disconnection operation on the main switch after monitoring that the power of the transformer is abnormal;

the main controller is connected with the computer, the storage device is arranged in the computer, after the main controller controls the second sub-controller to perform transformer voltage reduction operation or main switch disconnection operation, data are transmitted to the computer and stored, and meanwhile, the abnormal signals are transmitted to the display.

2. The integrated control system for the 500kV and following large-scale power transformer test station according to claim 1, characterized in that: the main controller, the first sub-controller and the second sub-controller are all PLC controllers.

3. The integrated control system for the 500kV and following large-scale power transformer test station according to claim 1, characterized in that: the temperature rise measurer is a temperature sensor and is transmitted to the main controller through signals;

the temperature rise temperature measurer monitors the temperature change of the transformer, records the temperature change of the transformer during a temperature rise experiment, transmits a signal to the main controller, and the main controller controls the start and the end of the experiment by controlling the second sub-controller;

the main controller transmits the signal to the computer, and the computer forms the temperature variation into a curve chart and displays the curve chart on the display.

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