CN202383464U - Measurement and control device suitable for intelligent control of power cabinet - Google Patents
Measurement and control device suitable for intelligent control of power cabinet Download PDFInfo
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- CN202383464U CN202383464U CN2011205244517U CN201120524451U CN202383464U CN 202383464 U CN202383464 U CN 202383464U CN 2011205244517 U CN2011205244517 U CN 2011205244517U CN 201120524451 U CN201120524451 U CN 201120524451U CN 202383464 U CN202383464 U CN 202383464U
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Abstract
The utility model discloses a measurement and control device suitable for intelligent control of a power cabinet. The measurement and control device comprises an interface circuit used for signal processing and providing an external interface of a detector, a control unit used for sampling, computing and controlling analog quantity, and a human-computer interface used for checking data and setting parameters. The interface circuit is communicated with the control unit through a ribbon-shaped cable, and the human-computer interface is communicated with the control unit through a Mod bus. According to the utility model, currents of a three-phase rectifier bridge are sampled to figure out separate currents of six bridge arms and a total current; based on the result, the detection state of a fuse is combined to monitor the running condition of a major circuit and give an alarm for fault of the major circuit; in addition, according to the running condition of the rectifier bridge and the temperature of the power cabinet measured in real time, fans can be intelligently controlled to start or stop, so that the running time difference of the two fans is controlled in a certain range, the temperature in the cabinet can be kept at a comfortable value, and the reliability and the service life of a whole set of system can be respectively improved and prolonged.
Description
Technical field
The utility model relates to a kind of measure and control device that is applicable to the power cabinet Based Intelligent Control; The operation conditions in each brachium pontis electric current of detection power cabinet commutating circuit and total current, whole loop can be provided; And can be according to the blower fan start and stop of brachium pontis size of current and operation conditions Based Intelligent Control power cabinet; To realize the intelligentized measure and control device of power cabinet, belong to electrical technology field.
Background technology
The operation conditions in whole loop is generally judged through detecting its output current in the three phase rectifier loop in the prior art; But can not monitor the operation conditions of each brachium pontis; If commutating circuit occurs unusual, can not navigate to concrete branch road rapidly, have influence on failure judgment.
Power cabinet is equipped with two cooling blowers usually and forces cooling.Two typhoon machines one main one are equipped with, the active and standby usefulness of blower fan generally is through specifying principal and subordinate's cover, perhaps tack through blower fan and realize; These two kinds of schemes all are prone to cause a wherein typhoon captain phase charging operation; And another director shelves the phase, quickens the aging of main air blower, influences the serviceable life of whole device.Therefore how making full use of two typhoon machines, realize best cooling effect, and prolong the serviceable life of equipment set, is good problem to study.
The utility model content
The utility model technical matters to be solved is through giving each power cabinet configuration a measure and control device; Electric current to three-phase commutation bridge is sampled, and through calculating six electric current and total currents that brachium pontis is independent, detects the operation conditions in loop; Its fault is reported to the police; And can make difference working time of two typhoon machines be controlled at certain limit, and in-cabinet temperature be suitable according to the blower fan start and stop of size of current and operation conditions Based Intelligent Control power cabinet; Improve the reliability of whole system, prolong its serviceable life.
For solving the problems of the technologies described above, the utility model provides a kind of measure and control device that is applicable to the power cabinet Based Intelligent Control, it is characterized in that, comprises
Be used for signal condition and the interface circuit of pick-up unit external interface be provided,
The control module that be used for the analog quantity sampling, calculates and control,
Be used to the man-machine interface of checking data and parameter being set,
Said interface circuit is communicated by letter through flat cable with said control module, and said man-machine interface is through Modbus bus and said control module communication.
The signal that said interface circuit inserts comprises analog quantity and switching value.
Said analog signals comprises the temperature signal of rectifier bridge AC side three-phase current signal and two-way fairing at least.
Said switching value signal comprises to be opened into signal and/or leaves signal.
Saidly open the blast low signal that signal comprises that fuse blows signal and air pressure relay on 6 brachium pontis of power cabinet rectified three-phase circuit major loop return.
The said signal of leaving comprises blower fan control signal, fairing fault-signal, hardware check rub-out signal or blower fan manual ringing.
The beneficial effect that the utility model reached:
The utility model measure and control device can reflect electric current and total current, power component temperature, fuse blows and the fan operation situation of each brachium pontis in the power cabinet operational process in real time; And can according to sampled value with open the start and stop of judging and control blower fan into quantitative analysis; Make difference working time of two typhoon machines be controlled at certain limit; And in-cabinet temperature is suitable, improves the reliability of whole system, prolongs its serviceable life.
The power cabinet rectified three-phase circuit has six brachium pontis, respectively three-phase alternating current sampled, and through calculating the electric current that can learn six brachium pontis;, can differentiate fast when brachium pontis breaks down as one (or a plurality of), combine with the blown state of fuse simultaneously; Better realize hardware monitoring to six brachium pontis; When appearance is unusual, sends failure alarm signal rapidly, and pass through the quick fault location point of information of man-machine interface.
Control module starts blower fan according to loop ruuning situation, and fan starting and operation were rotated according to accumulated running time, automaticallyes switch when detecting fault, when satisfying the condition that starts two fan operations, starts two fan operation patterns.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the wiring diagram of the utility model.
Embodiment
With reference to the accompanying drawings and combine instance that the utility model is described in further detail.But the utility model is not limited to given embodiment.
Like Fig. 1, shown in Figure 2, the measure and control device of the utility model comprises interface card, control module and man-machine interface.Communicate by letter through flat cable between interface card and the control module, man-machine interface is through Modbus bus and control module communication.Interface circuit is used for signal condition and all external interfaces is provided, and control module is used for the analog quantity sampling, calculates and control, and man-machine interface is used to check data and parameter is set.
This device can detect total output current, can also measure the independent electric current of six brachium pontis, and in order to understand the running status of fairing major loop, each association and parameter can show and setting in man-machine interface.Can detect and control two subsequent use each other typhoon machines, realize opening automatically blower fan, single fan operation, two fan operations can also be realized manually control blower fan through man-machine interface, and the utilization of blower fan is got the maximum optimization.Can detection power cabinet temperature, the fuse blows signal, and show in man-machine interface.
The signal of handling comprises analog signals and switching value, introduces respectively below.
Analog signals comprises three-phase current signal and two-way temperature signal, and current signal is the size of current of rectifier bridge AC side three-phase current, the temperature of temperature signal reflection fairing.
Three-phase current signal access interface circuit board converts low-voltage signal into and sends into control module through flat cable; Control module obtains size of current through the AD conversion; And deliver to man-machine interface to signal through the ModBus communication bus; Man-machine interface can make to show that electric current is more accurate through the sampling coefficient of electric current is set.
The two-way temperature signal inserts PT100 (thermal resistance Temperature Humidity Sensor) temperature measurement signal and access interface circuit board; Send into control module through flat cable; Obtain the temperature height through the AD conversion; The Modbus communication is delivered to man-machine interface to temperature signal and is shown, can make temperature displayed more accurate through the sampling coefficient of change temperature equally.
The switching value signal be divided into open into signal with leave signal, open the blast low signal that signal comprises that fuse blows signal and air pressure relay on 6 brachium pontis of power cabinet rectified three-phase circuit major loop return.After corresponding signal is opened, not only in hardware-in-the-loop, there is pilot lamp to show, in man-machine interface, also can shows simultaneously.
Leave signal and comprise blower fan control signal, fairing fault-signal, hardware check rub-out signal, blower fan manual ringing etc., these signals all can cause corresponding the leave pilot lamp and the actuating of relay.
Claims (6)
1. a measure and control device that is applicable to the power cabinet Based Intelligent Control is characterized in that, comprises
Be used for signal condition and the interface circuit of pick-up unit external interface be provided,
The control module that be used for the analog quantity sampling, calculates and control,
Be used to the man-machine interface of checking data and parameter being set,
Said interface circuit is communicated by letter through flat cable with said control module, and said man-machine interface is through Modbus bus and said control module communication.
2. the measure and control device that is applicable to the power cabinet Based Intelligent Control according to claim 1 is characterized in that, the signal that said interface circuit inserts comprises analog quantity and switching value.
3. the measure and control device that is applicable to the power cabinet Based Intelligent Control according to claim 2 is characterized in that said analog signals comprises the temperature signal of rectifier bridge AC side three-phase current signal and two-way fairing at least.
4. the measure and control device that is applicable to the power cabinet Based Intelligent Control according to claim 2 is characterized in that, said switching value signal comprises to be opened into signal and/or leave signal.
5. the measure and control device that is applicable to the power cabinet Based Intelligent Control according to claim 4 is characterized in that, saidly opens the blast low signal that signal comprises that fuse blows signal and air pressure relay on 6 brachium pontis of power cabinet rectified three-phase circuit major loop return.
6. the measure and control device that is applicable to the power cabinet Based Intelligent Control according to claim 4 is characterized in that, the said signal of leaving comprises blower fan control signal, fairing fault-signal, hardware check rub-out signal or blower fan manual ringing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205244517U CN202383464U (en) | 2011-12-15 | 2011-12-15 | Measurement and control device suitable for intelligent control of power cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205244517U CN202383464U (en) | 2011-12-15 | 2011-12-15 | Measurement and control device suitable for intelligent control of power cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202383464U true CN202383464U (en) | 2012-08-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205244517U Expired - Lifetime CN202383464U (en) | 2011-12-15 | 2011-12-15 | Measurement and control device suitable for intelligent control of power cabinet |
Country Status (1)
| Country | Link |
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| CN (1) | CN202383464U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592884A (en) * | 2013-11-15 | 2014-02-19 | 国家电网公司 | Management cabinet of relay protection reserve part |
| CN113483394A (en) * | 2021-05-26 | 2021-10-08 | 广州丹特怡家科技有限公司 | Ultra-low energy consumption building special environment all-in-one machine and control method thereof |
-
2011
- 2011-12-15 CN CN2011205244517U patent/CN202383464U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592884A (en) * | 2013-11-15 | 2014-02-19 | 国家电网公司 | Management cabinet of relay protection reserve part |
| CN113483394A (en) * | 2021-05-26 | 2021-10-08 | 广州丹特怡家科技有限公司 | Ultra-low energy consumption building special environment all-in-one machine and control method thereof |
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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 |
Granted publication date: 20120815 |
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| CX01 | Expiry of patent term |