CN201773305U - PLC loop for power frequency withstand voltage testing device - Google Patents
PLC loop for power frequency withstand voltage testing device Download PDFInfo
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- CN201773305U CN201773305U CN2010205101684U CN201020510168U CN201773305U CN 201773305 U CN201773305 U CN 201773305U CN 2010205101684 U CN2010205101684 U CN 2010205101684U CN 201020510168 U CN201020510168 U CN 201020510168U CN 201773305 U CN201773305 U CN 201773305U
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Abstract
The utility model discloses a programmable logic control (PLC) loop for a power frequency withstand voltage testing device in the technical field of power systems. The PLC loop comprises a temperature sensor, a temperature controller, a PLC unit, a signal measuring unit, a voltage regulator signal switching unit, a liquid crystal display and an alarm indicating unit. The system acquires, processes and performs real-time display of a temperature value of a testing transformer through the temperature controller, judges whether an actual temperature value is excessive according to a preset temperature protection value and sends an alarm signal; the PLC unit sends out a control command according to received information; and a power frequency withstand voltage device stops operation. By adopting a PLC central processing unit (CPU) 244CN, the PLC loop realizes automatic control of the entire system and has high anti-interference and impact resistance.
Description
Technical field
The utility model relates to a kind of proving installation of technical field of power systems, specifically is a kind of PLC that is used for the industrial frequency withstand voltage proving installation (FPGA (Field Programmable Gate Array)) control loop of gas-insulated combination (GIS) electric equipment.
Background technology
Control loop in the industrial frequency withstand voltage equipment in the market adopts dsp controller substantially, and the data-handling capacity of this dsp chip is powerful, but a little less than the impact resistance, and PLC is mainly used in Industry Control, is more suitable for being applied to heavy current installation, the reliability height, versatility is good, has industrial standard.
Find through retrieval prior art, Chinese patent literature CN201489080U, day for announcing 2010-5-26, put down in writing " a kind of temperature rise pick-up unit of power frequency withstand test equipment ", disclose a kind of by the temperature sensor that in low-voltage coil, is symmetrically distributed, described temperature sensor is connected with alarm by the PLC operating platform, and signal is transferred to alarm and sends alerting signal when temperature is too high, has guaranteed the security that detects.But above-mentioned technology does not relate to the temperature of the real-time demonstration low-voltage coil of collect and to the PLC control loop of test unit, therefore be necessary the temperature rise pick-up unit is improved, a temperature display platform and a reliable control loop intuitively are provided.
The utility model content
The utility model provides a kind of PLC control loop that is used for the industrial frequency withstand voltage proving installation at the prior art above shortcomings, by collection and the processing to data, and sends instruction, makes each ingredient of proving installation all be controlled effectively.
The utility model is achieved through the following technical solutions; the utility model comprises: temperature sensor; temperature controller; the PLC unit; signal measurement unit; the pressure regulator signal exchange unit; liquid crystal display and warning indicating member; wherein: first output terminal of temperature sensor is connected the transmission temperature signal with the first input end of temperature controller and the first input end of PLC unit respectively; first output terminal of temperature controller is connected the signal whether the transmission temperature surpasses setting value with second input end of PLC unit; first output terminal of signal measurement unit is connected the signal of the measured overvoltage discharge prevention of transmission with the 3rd input end of PLC unit; first output terminal of the input-output unit of pressure regulator signal is connected the signal of the travel position of transmitting pressure regulator with the four-input terminal of PLC unit; first output terminal of PLC unit is connected with various warning lights and transmits the overtemperature alarm signal; second output terminal of PLC unit links to each other with the first input end of pressure regulator signal exchange unit and transmits the buck instruction, and the 3rd output terminal of PLC unit links to each other with the first input end of liquid crystal display to transmit and wants content displayed.
The temperature signal of testing transformer in the described temperature sensor transmission industrial frequency withstand voltage apparatus system.
Described temperature controller collection is from the temperature signal of temperature sensor and be presented on the liquid crystal display that temperature controller carries, and temperature controller transmits alerting signal or normal run signal in addition to the PLC unit, realizes real-time demonstration and control to the testing transformer temperature.
Described PLC unit is mainly controlled all input signals that receive, and sends alerting signal or buck instruction.
Described signal measurement unit is handled the signal that collects in other loops, is transferred to the PLC unit then, realizes control function;
Described pressure regulator signal exchange unit is to the travel position signal of pressure regulator and the transmission of buck instruction;
Described warning indicating member is made up of some alarm lamps, comprising: overtemperature alarm indicator, overvoltage protection alarm indicator, discharge prevention alarm indicator, maximum travel position lamp, minimum stroke position lamp and integrated alarm lamp.
Described liquid crystal display shows from the next content of PLC unit transmission, such as trial voltage, protects magnitude of voltage.
System described in the utility model carries out work in the following manner: when system powers on start, the PLC unit at first carries out self check, can operate when affirmation system non-fault and alarm free, the PLC unit is at first according to the travel position signal of the pressure regulator that collects, carry out computing, the result of pressure regulator output voltage is shown to liquid crystal display, and require the voltage requirements that reaches according to test, input-output unit to pressure regulator sends the lifting/voltage reducing signal, and pressure regulator moves subsequently; In pressure regulator lifting/voltage reducing process, the PLC unit is handled according to the signal and the next signal of signal measurement unit transmission of the input-output unit input of the depressor that collects; as occur unusual; the PLC unit will send the protection instruction and protect action, cut off the electricity supply, and quit work.Only in the lifting/voltage reducing process, any unusual as discharge do not occur, report to the police and during the protection action, test could normally be carried out.
After the utility model adopts above technical scheme, mainly contain following innovative point:
The utility model can in time be gathered the temperature signal of testing transformer, and after handling, temperature value is presented on the temperature controller by using temperature controller, and the warning of excess temperature is transferred to the PLC unit, has filled up the deficiencies in the prior art;
The utility model passes through to adopt the PLC unit, more reliable being applied in the strong power system, and anti-interference and strong shock resistance can not cause maloperation;
PLC of the present utility model unit has the startup self-detection function, as abnormal conditions occur, directly power cutoff.
The utility model is determined the travel position of pressure regulator by gathering the input/output signal of pressure regulator, thereby can calculate actual experimental voltage value by the PLC unit, and the workflow and the time that make greatly reduce, and economic and reliable has promotional value.
Description of drawings
Fig. 1 is the utility model system construction drawing.
Fig. 2 is the wiring diagram of PLC of the present utility model unit.
Embodiment
Below embodiment of the present utility model is elaborated; present embodiment is being to implement under the prerequisite with technical solutions of the utility model; provided detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
As shown in Figure 1, present embodiment comprises: temperature sensor 1, temperature controller 2, PLC unit 3, signal measurement unit 4, pressure regulator signal exchange unit 5, liquid crystal display 6 and warning indicating member 7.Wherein first output terminal of temperature sensor 1 is connected the transmission temperature signal with the first input end of temperature controller 2 and the first input end of PLC unit 3 respectively; first output terminal of temperature controller 2 is connected the signal whether the transmission temperature surpasses setting value with second input end of PLC unit 3; first output terminal of signal measurement unit 4 is connected the measured overvoltage of transmission with the 3rd input end of PLC unit 3; the signal of discharge prevention; first output terminal of the input-output unit 5 of pressure regulator signal is connected the signal of the travel position of transmitting pressure regulator with the four-input terminal of PLC unit 3; first output terminal of PLC unit 3 is connected with the various warning lights of warning indicating member 7 and transmits the overtemperature alarm signal; second output terminal of PLC unit 3 links to each other with the first input end of pressure regulator signal exchange unit 5 and transmits the buck instruction, and the 3rd output terminal of PLC unit 3 links to each other with the first input end of liquid crystal display 6 to transmit and wants content displayed.
Described temperature sensor 1 is the temperature signal of testing transformer in Pt100 type temperature sensor and the transmission industrial frequency withstand voltage apparatus system.
The temperature signal that described temperature controller 2 is gathered from temperature sensor 1, the process processes and displays is on the liquid crystal display that temperature controller 2 carries, and transmission alerting signal or normal run signal are to PLC unit 3, realization is to the real-time demonstration and the control of testing transformer temperature, and temperature controller is selected Continental Europe temperature controller 3216 for use.
Described PLC unit 3 is a Siemens CPU224CN type PLC controller, and alerting signal or buck instruction are controlled and sent to this PLC controller to all input signals that receive.
Described signal measurement unit 4 is transferred to PLC unit 3 after being used for handling the signal that collects in other loops, realizes control function;
Described pressure regulator signal exchange unit 5 is the transmission to the travel position signal of pressure regulator and buck instruction;
Described liquid crystal display 6 shows the content that 3 transmission come from the PLC unit, such as trial voltage, and protection magnitude of voltage etc.
Described warning indicating member 7 comprises: overtemperature alarm indicator 8, overvoltage protection alarm indicator 9, discharge prevention alarm indicator 10, maximum travel position lamp 11, minimum stroke position lamp 12 and integrated alarm lamp 13.
As shown in Figure 2, described PLC CPU224CN has 30 pins, wherein:
The 0.0th pin of PLC CPU224CN is connected with terminal 4:9 with the lead-out terminal 4:8 of signal measurement unit 4 respectively with the 0.1st pin, transmits the signal of whether overvoltage, discharge prevention;
The 0.2nd pin of PLC CPU224CN is connected with the output terminal of temperature controller 2, transmission excess temperature signal;
The 2.7th pin of PLC CPU224CN, the 3.0th pin and the 3.1st pin are connected with overvoltage protection alarm indicator 9, discharge prevention alarm indicator 10 and the integrated alarm lamp of alerting signal indicating member 7 respectively, as any situation appears, then corresponding pilot lamp is lighted;
The 2.1st pin of PLC CPU224CN is connected with the overtemperature alarm indicator 8 of alerting signal indicating member 7, if excess temperature, then overtemperature alarm indicator 8 is lighted;
The 0.3rd pin of PLC CPU224CN, the 0.4th pin and the 0.5th pin are connected with the input terminal of liquid crystal display 6 respectively, and liquid crystal display shows the data of transmission;
The 0.6th pin of PLC CPU224CN and the 0.7th pin are connected with the lead-out terminal of the input-output unit 5 of pressure regulator respectively, and judgement is controlled to the travel position of pressure regulator in the PLC unit;
The 2.2nd pin of PLC CPU224CN and the 2.3rd pin are connected with minimum stroke position lamp 12 with the maximum travel position lamp 11 of alerting signal indicating member 7 respectively, as belong to this two stroke POF, and corresponding the grade can be lighted;
The 1.0th pin of PLC CPU224CN, the 1.1st pin and the 1.2nd pin are connected with the input end of the input-output unit 5 of pressure regulator respectively, and the 3 pairs of pressure regulators in transmission PLC unit boost, step-down and the signal of step-down automatically;
This installs described system by temperature controller collection, processing and the temperature value that shows testing transformer in real time; and judge whether overtemperature of actual temperature value according to predefined temperature protection value; and send alerting signal; the PLC unit sends control command according to the information that receives, and the industrial frequency withstand voltage device quits work.
This device employing PLC CPU244CN has realized the automatic control to total system, and is anti-interference strong with impact capacity.
Claims (5)
1. PLC control loop that is used for the industrial frequency withstand voltage proving installation; it is characterized in that; comprise: temperature sensor; temperature controller; the PLC unit; signal measurement unit; the pressure regulator signal exchange unit; liquid crystal display and warning indicating member; wherein: first output terminal of temperature sensor is connected the transmission temperature signal with the first input end of temperature controller and the first input end of PLC unit respectively; first output terminal of temperature controller is connected the signal whether the transmission temperature surpasses setting value with second input end of PLC unit; first output terminal of signal measurement unit is connected the signal of the measured overvoltage discharge prevention of transmission with the 3rd input end of PLC unit; first output terminal of the input-output unit of pressure regulator signal is connected the signal of the travel position of transmitting pressure regulator with the four-input terminal of PLC unit; first output terminal of PLC unit is connected with various warning lights and transmits the overtemperature alarm signal; second output terminal of PLC unit links to each other with the first input end of pressure regulator signal exchange unit and transmits the buck instruction, and the 3rd output terminal of PLC unit links to each other with the first input end of liquid crystal display to transmit and wants content displayed.
2. the PLC control loop that is used for the industrial frequency withstand voltage proving installation according to claim 1 is characterized in that, described temperature sensor is the temperature signal of testing transformer in Pt100 type temperature sensor and the transmission industrial frequency withstand voltage apparatus system.
3. the PLC control loop that is used for the industrial frequency withstand voltage proving installation according to claim 1 is characterized in that described warning indicating member is made up of some alarm lamps.
4. according to claim 1 or the 3 described PLC control loops that are used for the industrial frequency withstand voltage proving installation; it is characterized in that described warning indicating member comprises: overtemperature alarm indicator, overvoltage protection alarm indicator, discharge prevention alarm indicator, maximum travel position lamp, minimum stroke position lamp and integrated alarm lamp.
5. the PLC control loop that is used for the industrial frequency withstand voltage proving installation according to claim 1 is characterized in that, described PLC unit is a Siemens CPU224CN type PLC controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205101684U CN201773305U (en) | 2010-08-30 | 2010-08-30 | PLC loop for power frequency withstand voltage testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205101684U CN201773305U (en) | 2010-08-30 | 2010-08-30 | PLC loop for power frequency withstand voltage testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201773305U true CN201773305U (en) | 2011-03-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205101684U Expired - Lifetime CN201773305U (en) | 2010-08-30 | 2010-08-30 | PLC loop for power frequency withstand voltage testing device |
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| Country | Link |
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| CN (1) | CN201773305U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050859A (en) * | 2011-10-14 | 2013-04-17 | 利宝嘉电业(深圳)有限公司 | Automatic production process and automatic production device of audio signal plug |
| CN110411591A (en) * | 2019-07-19 | 2019-11-05 | 陕西中财印务有限公司 | A kind of transformer temperature telemetering immediately monitoring alarm system and its monitoring method |
-
2010
- 2010-08-30 CN CN2010205101684U patent/CN201773305U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050859A (en) * | 2011-10-14 | 2013-04-17 | 利宝嘉电业(深圳)有限公司 | Automatic production process and automatic production device of audio signal plug |
| CN103050859B (en) * | 2011-10-14 | 2015-05-13 | 利宝嘉电业(深圳)有限公司 | Automatic production process and automatic production device of audio signal plug |
| CN110411591A (en) * | 2019-07-19 | 2019-11-05 | 陕西中财印务有限公司 | A kind of transformer temperature telemetering immediately monitoring alarm system and its monitoring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110323 |