CN201742160U

CN201742160U - Control system of mobile power supply device

Info

Publication number: CN201742160U
Application number: CN2010202011826U
Authority: CN
Inventors: 孟楠; 鞠登峰; 毕建刚; 云峰; 薛亮红
Original assignee: China Electric Power Research Institute Co Ltd CEPRI
Current assignee: China Electric Power Research Institute Co Ltd CEPRI
Priority date: 2010-05-19
Filing date: 2010-05-19
Publication date: 2011-02-09
Anticipated expiration: 2020-05-19

Abstract

The utility model relates to a control system of a mobile power supply device, which comprises a field control level, a process control level and a remote control level. The field control level comprises a digital quantity acquisition unit and an analog quantity acquisition unit. State digital signals acquired by a relay, a circuit breaker and a contactor in the digital quantity acquisition unit are transmitted to the process control level. Analog signals acquired by power, frequency, temperature, voltage and current measurement modules in the analog quantity acquisition unit are transmitted to the process control level. The process control level comprises a programmable controller and a stepping motor control unit. A signal acquired by the field control level is respectively input into a digital quantity input module and an analog quantity input module and is output after being subjected to logical operation by a program processing module. An output digital quantity signal is input into the digital quantity acquisition unit by a digital quantity output module. An output stepping motor control signal is input into a stepping motor driver so as to drive a stepping motor. An output end of the program processing module is respectively connected with a computer and the remote control level by two Ethernet ports. The remote control level comprises a control box and another computer.

Description

A kind of control system of removable supply unit

Technical field

The utility model relates to a kind of power control system, particularly about a kind of control system of removable supply unit.

Background technology

In power transformer partial discharge test, the effect of removable supply unit is very important, because characteristics such as local discharge test electric pressure height, zone are big, site environment complexity, this is just to the higher requirement of control system proposition.At present, the control system of removable supply unit is an analogue system.In the set-up procedure before test, this control system need be carried out manual adjustments to overvoltage protection relay, overcurrent protection relay.But, because the precision of manual adjustments is difficult to accurate control, so need repeatedly check and correction just can reach the demand of protection.And, in process of the test, adjust the output of supply unit by the manual adjustments transformer, owing to use the simulation table to measure, therefore cause reading of data intuitively.And, voltage regulator is placed in the Long-distance Control case, but in high-power removable supply unit, because the volume of voltage regulator is bigger, therefore voltage regulator can only be placed in the removable supply unit, testing crew is operation control system in removable supply unit, so just makes troubles for field test personnel whole observation to the testing ground in process of the test.

Summary of the invention

At the problems referred to above, it is higher, accurate that the purpose of this utility model provides a kind of efficient, and easy and simple to handle, the control system of removable supply unit flexibly.

For achieving the above object, the utility model is taked following technical scheme: a kind of control system of removable supply unit is characterized in that: it comprises a field control level, a process control level and a Long-distance Control level; Described field control level comprises a digital data acquisition unit and an analog acquisition unit, relay in the described digital data acquisition unit, a circuit breaker and a contactor carry out data acquisition to described removable supply unit state, and with the status number signal that collects in data wire transfers to described process control level; Power measurement module in the described analog acquisition unit, a frequency measurement module, a temperature-measuring module, a voltage measurement module and a current measurement module carry out data acquisition to removable supply unit state, with the analog signal that collects in data wire transfers to described process control level; Described process control level comprises a Programmable Logic Controller and a step motor control unit, in the digital data acquisition unit in the described field control level and the digital signal and the digital quantity input module and an analog quantity input module of analog signal in data wire is imported described Programmable Logic Controller respectively of analog acquisition unit collection, and undertaken exporting after the logical operation by the routine processes module in the described Programmable Logic Controller; The digital quantity signal of described routine processes module output is imported in the described digital data acquisition unit by a digital quantity output module; After the step motor control signal of described routine processes module output is imported a step motor control module, the step motor control signal is converted into pulse command, and import in the described step motor control unit, after a stepper motor driver in the described step motor control unit receives pulse command, drive a stepping motor job; Described routine processes module output also connects a computer and described Long-distance Control level through two ethernet ports respectively; Described Long-distance Control level comprises a control cabinet and another computer, and described control cabinet connects the output of described Programmable Logic Controller by cable, and described computer connects a wherein described ethernet port by data wire.

Described digital quantity input module adopts the digital quantity input module of band light-coupled isolation.

The utility model is owing to take above technical scheme, it has the following advantages: 1, the utility model is because the numerical control system that adopts comprises field control level, process control level and Long-distance Control level, even field control level of the present utility model or Long-distance Control level are in abnormality in a period of time, also can not cause the forfeiture of whole removable supply unit function, therefore, guaranteed the utlity model has higher operating efficiency and accuracy, also guaranteed to have functional reliability preferably simultaneously.2, the utility model is because the process control level that adopts comprises Programmable Logic Controller and step motor control unit, various digital signals that Programmable Logic Controller is gathered the field control level and analog signal are after the routine processes resume module, realize control respectively to digital data acquisition unit in the field control level and step motor control unit, and in the computer with computer in the various signal input process controlled stages and Long-distance Control level, it is presented on the touch-screen, form the required control system of user, therefore, can adapt to the job requirement of various testing grounds, easy and simple to handle, flexibly.3, the utility model is because employing is provided with the step motor control module in Programmable Logic Controller, the step motor control module is imported the step motor control unit with control signal, therefore, the inconvenience that has brought to operating personnel when having avoided the voltage regulator that volume is bigger to be placed in the removable supply unit, simultaneously, overcome the problem that manual adjustments is difficult to guarantee precision.4, the utility model is owing to be respectively arranged with a computer in process control level and Long-distance Control level, therefore the various signals that the field control level can be collected carry out visual record, and can realize all measuring-signals are monitored in real time, write down intuitively easy, also can deposit image data in each computer in, and then realize measurement data is repeatedly laterally contrasted.5, the utility model, only needs to change malfunctioning module and get final product when breaking down owing to adopt modularization, standardization to install, therefore realized quick and easy for installation, safeguard simply.The utility model can be widely used in the various partial discharge test power control systems.

Description of drawings

Fig. 1 is an overall structure schematic diagram of the present utility model.

Embodiment

Below in conjunction with drawings and Examples the utility model is described in detail.

As shown in Figure 1, control system of the present utility model is a numerical control system, and it comprises a field control level 10, a process control level 30 and a Long-distance Control level 50.

Field control level 10 comprises a digital data acquisition unit 11 and an analog acquisition unit 12, a relay 13, a circuit breaker 14 and 15 pairs of removable supply unit states of a contactor in the digital data acquisition unit 11 carry out data acquisition, with the relay, circuit breaker and the contactor status number signal that collect in data wire transfers to process control level 30.A power measurement module 16, a frequency measurement module 17, a temperature-measuring module 18, a voltage measurement module 19 and 20 pairs of removable supply unit states of a current measurement module in the analog acquisition unit 12 carry out data acquisition, with analog signals such as the power that collects, frequency, temperature, voltage and currents also in data wire transfers to process control level 30.

Process control level 30 comprises a PLC (Programmable Logic Controller) 31 and a step motor control unit 32, digital signal that digital data acquisition unit 11 in the field control level 10 and analog acquisition unit 12 are gathered and analog signal and are undertaken exporting after the logical operation by the routine processes module 35 in the PLC31 in data wire is imported the digital quantity input module 33 and an analog quantity input module 34 of the band of one in PLC31 light-coupled isolation respectively.The digital quantity signal of routine processes module 35 outputs is realized the control to relay, circuit breaker and contactor by in a digital quantity output module 36 input digit amount collecting units 11; After the step motor control signal of routine processes module 35 output is imported a step motor control module 37, the step motor control signal is converted into pulse command, and in the input step motor control unit 32, and then has realized regulatory function voltage.After a stepper motor driver 38 in the step motor control unit 32 receives pulse command, drive a stepping motor 39 work; Routine processes module 35 outputs also connect a computer 42 and Long-distance Control level 50 through two ethernet ports (LAN1) 40, (LAN2) 41 respectively.After computer 42 receives the signal of routine processes module 35 transmission, can realize all data are carried out monitoring display and can be operated control removable supply unit of the present utility model.

Long-distance Control level 50 comprises control cabinet 51 and another computer 52, control cabinet 51 connects the output of PLC31 by cable, computer 52 connects ethernet port 41 by data wire, and all data that receive are carried out monitoring display, making things convenient for field test personnel operation and record data, and then realize the Long-distance Control that realizes removable supply unit of the present utility model by control cabinet 51 and computer 52.

The various embodiments described above only are used to illustrate the utility model; wherein the structure of each parts, connected mode etc. all can change to some extent; every equivalents of carrying out on the basis of technical solutions of the utility model and improvement all should not got rid of outside protection range of the present utility model.

Claims

1. the control system of a removable supply unit, it is characterized in that: it comprises a field control level, a process control level and a Long-distance Control level;

Described field control level comprises a digital data acquisition unit and an analog acquisition unit, relay in the described digital data acquisition unit, a circuit breaker and a contactor carry out data acquisition to described removable supply unit state, and with the status number signal that collects in data wire transfers to described process control level; Power measurement module in the described analog acquisition unit, a frequency measurement module, a temperature-measuring module, a voltage measurement module and a current measurement module carry out data acquisition to removable supply unit state, with the analog signal that collects in data wire transfers to described process control level;

Described process control level comprises a Programmable Logic Controller and a step motor control unit, in the digital data acquisition unit in the described field control level and the digital signal and the digital quantity input module and an analog quantity input module of analog signal in data wire is imported described Programmable Logic Controller respectively of analog acquisition unit collection, and undertaken exporting after the logical operation by the routine processes module in the described Programmable Logic Controller; The digital quantity signal of described routine processes module output is imported in the described digital data acquisition unit by a digital quantity output module; After the step motor control signal of described routine processes module output is imported a step motor control module, the step motor control signal is converted into pulse command, and import in the described step motor control unit, after a stepper motor driver in the described step motor control unit receives pulse command, drive a stepping motor job; Described routine processes module output also connects a computer and described Long-distance Control level through two ethernet ports respectively;

Described Long-distance Control level comprises a control cabinet and another computer, and described control cabinet connects the output of described Programmable Logic Controller by cable, and described computer connects a wherein described ethernet port by data wire.

2. the control system of a kind of removable supply unit as claimed in claim 1 is characterized in that: the digital quantity input module of described digital quantity input module employing band light-coupled isolation.