CN202563038U - Short-circuit and grounding fault indicator provided with communication - Google Patents
Short-circuit and grounding fault indicator provided with communication Download PDFInfo
- Publication number
- CN202563038U CN202563038U CN2012201763177U CN201220176317U CN202563038U CN 202563038 U CN202563038 U CN 202563038U CN 2012201763177 U CN2012201763177 U CN 2012201763177U CN 201220176317 U CN201220176317 U CN 201220176317U CN 202563038 U CN202563038 U CN 202563038U
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- fault
- short
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- microprocessor
- circuit
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Abstract
The utility model discloses a short-circuit and grounding fault indicator provided with communication, which comprises a short-circuit fault sensor, a grounding fault sensor, and a control unit. The control unit includes a microprocessor, a short-circuit fault indicating module, a grounding fault indicating module and a RS-485 communication module, wherein the short-circuit fault indicating module, the grounding fault indicating module and the RS-485 communication module are all connected with the microprocessor, the short-circuit fault sensor and the grounding fault sensor are connected with the microprocessor so to respectively transmit short-circuit fault signals and grounding fault signals to the microprocessor, and the short-circuit fault signals and the grounding fault signals received by the microprocessor are displayed by the short-circuit fault indicating module and the grounding fault indicating module respectively and transmitted to a far end by passing through the RS-485 communication module. The fault indicator disclosed by the utility model reduces time spent on line fault screening greatly, creates favorable conditions for recovering a power supply system instantly, and ensures reliable running of the whole system.
Description
Technical field
The utility model relates to a kind of pick-up unit that is applied in the electric system switch cubicle, relate in particular a kind ofly can the short trouble and the earth fault of power distribution network circuit be detected, monitoring and intelligent alarm and with the device of failure message digital telemetering.
Background technology
At present; Short circuit of using in the distribution system and earth-fault indicator generally comprise short trouble sensor, ground fault sensor and signal Processing/output control unit; Wherein the short trouble sensor is used to detect the electric current of phase line; Ground fault sensor is used to detect neutral line current, and when the current value of sensor surpassed a certain setting threshold, the signal that control module sends back according to sensor was done corresponding warning and handled.
Usually, it is alarm appliance that control module adopts LED, when needs are reported to the police; LED lights; When fault-signal occurred, each control module before the trouble spot all drove corresponding LED lamp and lights, and then corresponding LED lamp does not work after the trouble spot; According to this principle, the plant maintenance personnel are according to state trouble-shooting point between each distribution node of LED.
But, owing to the LED lamp can only be installed on each distribution node of distribution system with control module, and in same distribution loop; Each distribution node might differ several kilometers even farther; In some place, a city might all be in the same distribution loop, thus; When short trouble or earth fault occurring, the trouble spot often need take a long time the maintainer in order to seek accurately.
In view of this, the inventor deeply studies to the above-mentioned deficiency of prior art fault detector, has this case to produce then.
The utility model content
The purpose of the utility model is to provide a kind of short circuit and earth-fault indicator with communication, to solve the problem that prior art need take a long time when seeking accurate trouble spot.
In order to reach above-mentioned purpose, the solution of the utility model is:
A kind of short circuit and earth-fault indicator with communication; Wherein, Comprise short trouble sensor, ground fault sensor and control module; Short trouble indicating module, earth fault indicating module and RS-485 communication module that this control module comprises microprocessor and all links to each other with microprocessor; This short trouble sensor also all links to each other with microprocessor with ground fault sensor and respectively short trouble signal and earth fault signal is transferred to microprocessor, and this microprocessor shows via short trouble indicating module and earth fault indicating module, and is transferred to far-end via the RS-485 module.
Further, this short circuit and earth-fault indicator also comprise the RS-485 communication interface, and this RS-485 communication interface links to each other with the RS-485 communication module.
Further, this short circuit and earth-fault indicator also comprise electric power management circuit, external power source module and reserve battery, and this external power source module all links to each other with microprocessor through electric power management circuit with reserve battery.
Further, this short circuit and earth-fault indicator also comprise reseting module, and this reseting module links to each other with microprocessor.
After adopting said structure; The utility model relates to a kind of short circuit and earth-fault indicator with communication; Because control module also includes the RS-485 communication module, when earth fault or short trouble generation, control module can in time upload to dispatching control center through the RS-485 port with failure message; The information that can pass back according to each distribution node at dispatching control center of circuit patrolman and accurately judge the position of trouble spot thus; Shorten the line fault investigation time greatly,, guarantee the reliability service of total system for the instant recovery of electric power system creates favorable conditions.
Description of drawings
Fig. 1 is a kind of with the short circuit of communication and the theory structure block diagram of earth-fault indicator for the utility model relates to.
Among the figure:
Short circuit and earth-fault indicator 100
Short trouble sensor 1 ground fault sensor 2
Control module 3 microprocessors 31
Short trouble indicating module 32 earth fault indicating modules 33
RS-485 communication module 34 RS-485 communication interfaces 35
Electric power management circuit 36 external power source modules 37
Reserve battery 38 reseting modules 39.
Embodiment
In order further to explain the technical scheme of the utility model, come the utility model is set forth in detail through specific embodiment below.
As shown in Figure 1; A kind of short circuit and earth-fault indicator 100 that the utility model relates to communication; Comprise short trouble sensor 1, ground fault sensor 2 and control module 3, this control module 3 further comprises microprocessor 31, short trouble indicating module 32, earth fault indicating module 33 and RS-485 communication module 34 again.
This short trouble indicating module 32, earth fault indicating module 33 and RS-485 communication module 34 all link to each other with microprocessor 31, and this short trouble sensor 1 is provided with 3, are installed on respectively on the phase line of power circuit; Be used to detect the short trouble of phase line, it is made up of parts such as inductive coil, U-shaped metal, iron core, testing circuits, and the U-shaped metal is used for fixing installation; Form one-level closed loop magnetic field with iron core simultaneously, the variation in this grade of inductive coil induction magnetic field is when the power circuit failed because; Line current increases immediately; Cause that closed loop magnetic field sharply changes, the rapid variation magnetic field that inductive coil will be sensed converts electric signal to and passes to the testing circuit part, and on testing circuit, also including can the on-the-spot driving switch of setting; The corresponding short-circuit current value of each gear; When the phase line current surpasses setting value, testing circuit driven for emitting lights device, and send signal to control module 3 through optical cable.
This ground fault sensor 2 is set to 1, is installed on the threephase cable, and the zero-sequence current that is used to detect three-phase electricity is to judge earth fault; Be made up of parts such as inductive coil, metal band, iron core, testing circuits, the metal band is used for fixing installation, forms one-level closed loop magnetic field with iron core simultaneously; The variation in this grade of inductive coil induction magnetic field, when power circuit generation earth fault, zero-sequence current increases immediately; Cause that closed loop magnetic field sharply changes, the rapid variation magnetic field that inductive coil will be sensed converts electric signal to and passes to the testing circuit part, and on testing circuit, also including can the on-the-spot driving switch of setting; The corresponding earth-fault current value of each gear; When zero-sequence current surpasses setting value, testing circuit driven for emitting lights device, and send signal to control module 3 through optical cable.From the needs of different application occasion, ground fault sensor 2 also can be connected through cable with 3 of control modules, at this moment, no longer needs electricity/light conversion, and testing circuit directly sends the signal of sensing to control module 3 through cable and handles.
This short trouble sensor 1 also all links to each other with microprocessor 31 with ground fault sensor 2 and respectively short trouble signal and earth fault signal is transferred to microprocessor 31; This microprocessor 31 shows via short trouble indicating module 32 and earth fault indicating module 33 on the one hand, also is transferred to far-end via the RS-485 module on the other hand.Preferably, this short circuit and earth-fault indicator 100 also comprise RS-485 communication interface 35, and this RS-485 communication interface 35 links to each other with RS-485 communication module 34.
Like this; The utility model is because control module 3 also includes RS-485 communication module 34; When earth fault or short trouble generation; Control module 3 can in time upload to dispatching control center through the RS-485 port with failure message, and the information that can pass back according to each distribution node at dispatching control center of circuit patrolman and accurately judge the position of trouble spot shortens the line fault investigation time greatly thus; For the instant recovery of electric power system creates favorable conditions, guarantee the reliability service of total system.
In addition; This short circuit and earth-fault indicator 100 also comprise electric power management circuit 36, external power source module 37 and reserve battery 38; This external power source module 37 all links to each other with microprocessor 31 through electric power management circuit 36 with reserve battery 38, and this external power source module 37 is relatively independent circuit, can change as required and flexibly; It selects suitable treatment circuit according to the difference input power supply that different cabinet types is provided; 36 power supplies that are used for selecting to supply with microprocessor 31 and other assembly of electric power management circuit, when external power source existed, the selection external power source was a power supply; When detecting the external power source disappearance, select reserve battery 38 power supplies, simultaneously; Close the output of unnecessary power supply, guaranteeing the long-time power supply of reserve battery 38, when battery when working long hours the electric weight deficiency; Power management module drives corresponding low-voltage alarm lamp through microprocessor 31, changes battery with the prompting user.
The signal that microprocessor 31 monitoring is in real time imported into by short trouble sensor 1, ground fault sensor 2, when short trouble or earth fault generation, microprocessor 31 is according to detected input signal; Make corresponding alarm (flicker of driving LED lamp); Simultaneously, microprocessor 31 is with time of fire alarming and before according to the store alarms delay time being set relatively, when the warning delay time arrives; Microprocessor 31 forced resettings make system be in the acquiescence monitored state.This control module 3 also includes reseting module 39, if when being in alarm condition, the system failure is got rid of, can reset through reseting module 39, makes control module 3 be in the acquiescence monitored state.
Product form of the foregoing description and graphic and non-limiting the utility model and style, the those of ordinary skill of any affiliated technical field all should be regarded as not breaking away from the patent category of the utility model to its suitable variation or modification of doing.
Claims (4)
1. short circuit and earth-fault indicator with a communication; It is characterized in that; Comprise short trouble sensor, ground fault sensor and control module; Short trouble indicating module, earth fault indicating module and RS-485 communication module that this control module comprises microprocessor and all links to each other with microprocessor; This short trouble sensor also all links to each other with microprocessor with ground fault sensor and respectively short trouble signal and earth fault signal is transferred to microprocessor, and this microprocessor shows via short trouble indicating module and earth fault indicating module, and is transferred to far-end via the RS-485 module.
2. a kind of short circuit and earth-fault indicator with communication as claimed in claim 1 is characterized in that this short circuit and earth-fault indicator also comprise the RS-485 communication interface, and this RS-485 communication interface links to each other with the RS-485 communication module.
3. a kind of short circuit and earth-fault indicator as claimed in claim 1 with communication; It is characterized in that; This short circuit and earth-fault indicator also comprise electric power management circuit, external power source module and reserve battery, and this external power source module all links to each other with microprocessor through electric power management circuit with reserve battery.
4. a kind of short circuit and earth-fault indicator with communication as claimed in claim 1 is characterized in that this short circuit and earth-fault indicator also comprise reseting module, and this reseting module links to each other with microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201763177U CN202563038U (en) | 2012-04-24 | 2012-04-24 | Short-circuit and grounding fault indicator provided with communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201763177U CN202563038U (en) | 2012-04-24 | 2012-04-24 | Short-circuit and grounding fault indicator provided with communication |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202563038U true CN202563038U (en) | 2012-11-28 |
Family
ID=47212683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201763177U Expired - Lifetime CN202563038U (en) | 2012-04-24 | 2012-04-24 | Short-circuit and grounding fault indicator provided with communication |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202563038U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954636A (en) * | 2016-04-21 | 2016-09-21 | 张顺 | Short circuit and ground fault indicator |
-
2012
- 2012-04-24 CN CN2012201763177U patent/CN202563038U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105954636A (en) * | 2016-04-21 | 2016-09-21 | 张顺 | Short circuit and ground fault indicator |
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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: 20121128 |