CN204706260U - Investigation of visiting one house after another analogue means - Google Patents
Investigation of visiting one house after another analogue means Download PDFInfo
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- CN204706260U CN204706260U CN201520391424.5U CN201520391424U CN204706260U CN 204706260 U CN204706260 U CN 204706260U CN 201520391424 U CN201520391424 U CN 201520391424U CN 204706260 U CN204706260 U CN 204706260U
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- analogue means
- energy meter
- electric energy
- leakage detection
- protection device
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Abstract
The open one of the utility model is visited one house after another investigation analogue means, comprise supply unit, supply unit comprises the isolating transformer connected successively, power-supply filter (i.e. three-phase supply wave filter) and current leakage detection protection device, isolating transformer is electrically connected with city, also comprise fault simulator, fault simulator is connected with current leakage detection protection device, fault simulator comprises electric energy meter analogue means, low-voltage customer analogue means and automatic fault setting device, current leakage detection protection device is connected with electric energy meter analogue means, electric energy meter analogue means is connected with low-voltage customer analogue means, automatic fault setting device respectively with current leakage detection protection device, electric energy meter analogue means is connected with family load simulating device, described automatic fault setting device comprises some relays, resistance, electric capacity and rc absorber, relay is connected with low-voltage customer analogue means with electric energy meter analogue means respectively.Work about electric power personnel can be made to grasp the malfunction elimination technology of visiting one house after another of low-voltage customer fast.
Description
Technical field
This practicality newly belongs to electric power teaching, training device, is specifically related to a kind of analogue means of investigation of visiting one house after another.
Background technology
Often there is error connection in the connecting line between the switch of ammeter box to disconnecting link, between disconnecting link to gauging table and between gauging table to user, visits one house after another and family and open circuit fault.The eliminating of these faults is the important actions of work about electric power personnel one, this work for general personnel need at the scene through for many years grope and put into practice could basic grasp, learning process is longer, and carry out visiting one house after another malfunction elimination on the basis of not grasping certain experiences, its operation area inefficiency, has a strong impact on the productive life of user.Meanwhile, also there is potential safety hazard.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency provides one to visit one house after another investigation analogue means, and work about electric power personnel can be made to grasp the malfunction elimination technology of visiting one house after another of low-voltage customer fast.
The purpose of this utility model realizes in the following manner:
One is visited one house after another investigation analogue means, comprise supply unit, supply unit comprises the isolating transformer connected successively, power-supply filter (i.e. three-phase supply wave filter) and current leakage detection protection device, isolating transformer is electrically connected with city, also comprise fault simulator, fault simulator is connected with current leakage detection protection device, fault simulator comprises electric energy meter analogue means, low-voltage customer analogue means and automatic fault setting device, current leakage detection protection device is connected with electric energy meter analogue means, electric energy meter analogue means is connected with low-voltage customer analogue means, automatic fault setting device respectively with current leakage detection protection device, electric energy meter analogue means is connected with family load simulating device, described automatic fault setting device comprises some relays, resistance, electric capacity and rc absorber, relay is connected with low-voltage customer analogue means with electric energy meter analogue means respectively, described current leakage detection protection device comprises the current transformation mutual inductor be connected with power-supply filter, current transformation mutual inductor is connected with contactor by total undetected test coil, total undetected test coil is connected with earth leakage protection plate, earth leakage protection plate is connected with CPU processor, CPU processor is connected with relay board, relay web joint is connected with the relay of automatic fault setting device, CPU processor is also connected with upper PC by communication interface or wireless module.
Described isolating transformer is isolation PT.
Relative to prior art, the utility model has following advantage:
1, investigation of visiting one house after another actual training device, adopt rig-site utilization the most single-phase 12 epi-position batch meters, be equipped with fault simulator, make student carry out visiting one house after another malfunction elimination just as body faces scene, this device can produce dissimilar fault of visiting one house after another by upper PC under the prerequisite ensured personal safety.Student is remembered clearly to the understanding of the phenomenon of the failure of visiting one house after another and arrange distinguish method.
2,12 road load simulation technology
Investigation of visiting one house after another actual training device, coordinates fault simulator, adopts high-power precision resistance, electric capacity, inductance, realize 12 tunnels not sympathism, capacitive, resistive dummy load.This 12 road load can also by the middle of artificial random loading to any primary Ioops.By the investigation of student to fault of visiting one house after another and the measurement of data, understand visit one house after another fault and user and low-pressure system runs between relation, thus profound understanding be correlated with knowledge.
3, safety protection technique
Investigation of visiting one house after another analogue means, adopts isolation PT to power in operational process, and completely isolated with civil power, equipment possesses outside conventional electric leakage overload protection and is also furnished with current leakage detection protection device, plays the effect of multiple-protection, ensure that personal safety completely.
Accompanying drawing explanation
Fig. 1 is the utility model circuit block diagram.
Fig. 2 is circuit theory diagrams of the present utility model.
Fig. 3 is the circuit block diagram of the utility model current leakage detection protection device.
Fig. 4 is the circuit diagram of current leakage detection protection device.
Fig. 5 is current leakage detection protection device partial circuit schematic diagram.
Fig. 6 is the utility model isolation transformation gas electrical schematic diagram.
Fig. 7 is electric energy meter tail connection terminal misconnection fault schematic diagram.
To be the outlet of electric energy meter tail drive line into load sky to Fig. 8 visits one house after another wiring faults schematic diagram.
Fig. 9 is that load sky opens zero fiery reversal connection fault schematic diagram.
Figure 10 is that load sky is outputed line and to be visited one house after another fault schematic diagram to user load sheet.
Figure 11 is that user load place zero fire connects anti-fault schematic diagram.
Embodiment
One is as Figure 1-Figure 11 visited one house after another investigation analogue means, and comprise supply unit, supply unit comprises the isolating transformer, power-supply filter (i.e. three-phase supply wave filter) and the current leakage detection protection device that connect successively, and described isolating transformer is isolation PT.Isolating transformer is electrically connected with city, also comprise fault simulator, fault simulator is connected with current leakage detection protection device, fault simulator comprises electric energy meter analogue means, low-voltage customer analogue means and automatic fault setting device, current leakage detection protection device is connected with electric energy meter analogue means, electric energy meter analogue means is connected with low-voltage customer analogue means, automatic fault setting device respectively with current leakage detection protection device, electric energy meter analogue means is connected with family load simulating device, described automatic fault setting device comprises some relays, resistance, electric capacity and rc absorber, relay is connected with low-voltage customer analogue means with electric energy meter analogue means respectively, described current leakage detection protection device comprises the current transformation mutual inductor be connected with power-supply filter, current transformation mutual inductor is connected with contactor by total undetected test coil, total undetected test coil is connected with earth leakage protection plate, earth leakage protection plate is connected with CPU processor, CPU processor is connected with relay board, relay web joint is connected with the relay of automatic fault setting device, CPU processor is also connected with upper PC by communication interface or wireless module.
Safeguard protection of the present utility model is as follows:
1, device be furnished with electric leakage sky open:
The electric leakage of device stage body entirety is detected, when occurring if any leaky, carries out the personal safety of timely power-off protection operating personnel.
2, device is equipped with the current leakage detection protection device of my company's individual proprietorship development & production:
As shown in Figure 3 and Figure 4, this module existing three-phase over-current detection function; Also comprehensive leakage measuring ability is had; And can changing according to the needs of oneself of over-current detection and detection of electrical leakage.
Below for the introduction of A phase over-current detection circuit:
Detection of electrical leakage magnetic ring coil induces the voltage signal of different amplitude by detecting different alternating current on punching A phase cable, then by resistance R6(potentiometer) regulate the reference voltage level of detection of electrical leakage chip VG54123, the namely alarming threshold value of over-current detection.Time actual current on the cable of punching is greater than set reference current, namely alarm chip VG54123 exports high level, drive corresponding triode (T1) action, then relay J 8 action, after the J8 actuating of relay, alerting signal UGL is directly pulled to low level by original high level, CPU processor single-chip microcomputer performs overcurrent alarm and protection function by the change of the UGL signal detected, namely first control the coil power that power control relay disconnects stage body A.C. contactor, make the power down of device output; Then upload alerting signal and send audio alert prompting (faulty operation ...) simultaneously.After the J8 actuating of relay, the power down of J3 relay coil can be caused, thus vertical cut cuts off A phase voltage loop.
B phase, C phase overcurrent protection loop are identical with the protection philosophy of A phase.
UI earth leakage protection Some principles is introduced:
As shown in Figure 5, detection of electrical leakage magnetic ring coil by detect punching A, B, C, N, on cable the size of vector judge whether to exist leaky, then by resistance R9(potentiometer) regulate the reference voltage level (namely the alarming threshold value of detection of electrical leakage) of detection of electrical leakage chip VG54123.Vector actual on the cable of punching be greater than set reference vector and time, namely alarm chip VG54123 exports high level, drive corresponding triode (T4) action, then relay J 11 action, after the J11 actuating of relay, alerting signal UI is directly pulled to low level by original high level, single-chip microcomputer performs overcurrent alarm and protection function by the change of the UI signal detected, namely first control the coil power that power control relay disconnects stage body A.C. contactor, make the power down of device output; Then upload alerting signal and send audio alert prompting (faulty operation ...) simultaneously.After the J11 actuating of relay, the power down of J6 relay coil can be caused, thus excite the J6 actuating of relay, the state of its relay contact is changed.
3, isolating transformer protection:
Isolating transformer modular electrical schematic diagram as shown in Figure 6.The primary side of isolating transformer is connected with civil power, and secondary side is the electricity consumption of equipment.Electrically insulating completely of the primary side of isolating transformer and secondary side, also make secondary side circuit and civil power completely isolated.In addition, utilize the feature that the high-frequency loss of its iron core is large, thus suppress civil power high frequency spurs to import device electricity consumption loop into.Isolating transformer makes secondary suspend over the ground, and now the capacitive earth current of system is so little that to be not enough to damage the person.Thus to play important effect be exactly protect personal safety! Isolation dangerous voltage.
The electricity consumption of investigation of visiting one house after another analogue means adopts three-phase isolation transformer and civil power to isolate.The harm that the effective like this operating personnel of avoiding get an electric shock.
Fault simulation part of the present utility model is as follows:
1, the first type:
Electric energy meter tail connection terminal misconnection fault, as shown in Figure 7.
Fault realizes the actuating of relay and illustrates as table 1:
Table 1 is that fault realizes relay explanation
2, the second type:
The outlet of electric energy meter tail is driven line into load sky and to be visited one house after another wiring faults; This type of is visited one house after another as shown in Figure 8, is that the electric energy meter tail outlet of A phase four family is driven between line to load sky and visited one house after another mutually, the electric energy meter tail outlet of B phase four family is driven phase family between line into load sky and is visited one house after another, and the electric energy meter tail outlet of C phase four family is driven between line to load sky and visited one house after another mutually.
3, the third type:
Load sky opens zero fiery reversal connection fault, as shown in Figure 9.
Table 2 is that load sky opens zero fiery reversal connection fault explanation
4, Four types:
Load sky is outputed line and to be visited one house after another to user load place fault; Namely 12 road loads skies reach setting of carrying out that can be random between 12 tunnel loads and to visit one house after another fault; As shown in Figure 10.
5, the 5th type:
User load place zero fire connects anti-fault, as shown in figure 11.
Table 3 is that user load zero fire connects anti-fault
6, the 6th type:
Customer charge pilot lamp accesses fault; Be even pilot lamp access words then pilot lamp light, select the words pilot lamp that do not access then not work.
One, other function:
1, teacher, examinee information input function;
2, examination question editor and automatic generation function;
3, paper printing function;
Above-described is only preferred implementation of the present utility model; it should be pointed out that for a person skilled in the art, do not departing under the utility model general idea prerequisite; can also make some changes and improvements, these also should be considered as protection domain of the present utility model.
Claims (2)
1. an investigation analogue means of visiting one house after another, comprise supply unit, it is characterized in that: supply unit comprises the isolating transformer connected successively, power-supply filter and current leakage detection protection device, isolating transformer is electrically connected with city, also comprise fault simulator, fault simulator is connected with current leakage detection protection device, fault simulator comprises electric energy meter analogue means, low-voltage customer analogue means and automatic fault setting device, current leakage detection protection device is connected with electric energy meter analogue means, electric energy meter analogue means is connected with low-voltage customer analogue means, automatic fault setting device respectively with current leakage detection protection device, electric energy meter analogue means is connected with family load simulating device, described automatic fault setting device comprises some relays, resistance, electric capacity and rc absorber, relay is connected with low-voltage customer analogue means with electric energy meter analogue means respectively, described current leakage detection protection device comprises the current transformation mutual inductor be connected with power-supply filter, current transformation mutual inductor is connected with contactor by total undetected test coil, total undetected test coil is connected with earth leakage protection plate, earth leakage protection plate is connected with CPU processor, CPU processor is connected with relay board, relay web joint is connected with the relay of automatic fault setting device, CPU processor is also connected with upper PC by communication interface or wireless module.
2. investigation analogue means of visiting one house after another according to claim 1, is characterized in that: described isolating transformer is isolation PT.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520391424.5U CN204706260U (en) | 2015-06-09 | 2015-06-09 | Investigation of visiting one house after another analogue means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520391424.5U CN204706260U (en) | 2015-06-09 | 2015-06-09 | Investigation of visiting one house after another analogue means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204706260U true CN204706260U (en) | 2015-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520391424.5U Expired - Fee Related CN204706260U (en) | 2015-06-09 | 2015-06-09 | Investigation of visiting one house after another analogue means |
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| CN (1) | CN204706260U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105589011A (en) * | 2016-02-26 | 2016-05-18 | 国网浙江省电力公司嘉兴供电公司 | Missort investigation device and investigation method before installation of single-phase resident ammeter |
| CN105845002A (en) * | 2016-04-28 | 2016-08-10 | 国网河南省电力公司技能培训中心 | Fault simulation device for low voltage power distribution substation |
| CN106023705A (en) * | 2016-06-21 | 2016-10-12 | 国网浙江省电力公司培训中心 | Missort troubleshooting analog simulation training device |
| CN107204144A (en) * | 2017-06-29 | 2017-09-26 | 郑州万特电气股份有限公司 | A kind of power supply station employee sales service training operation system |
| CN107290707A (en) * | 2017-07-27 | 2017-10-24 | 中国电力科学研究院 | A kind of method and system for recognizing power information acquisition system electrical energy meter fault |
| CN109448516A (en) * | 2018-11-19 | 2019-03-08 | 杭州华春科技有限公司 | A kind of electric leakage investigation simulation teching device, control method and storage medium |
-
2015
- 2015-06-09 CN CN201520391424.5U patent/CN204706260U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105589011A (en) * | 2016-02-26 | 2016-05-18 | 国网浙江省电力公司嘉兴供电公司 | Missort investigation device and investigation method before installation of single-phase resident ammeter |
| CN105589011B (en) * | 2016-02-26 | 2018-11-16 | 国网浙江省电力公司嘉兴供电公司 | It visits one house after another before a kind of single-phase resident's electric energy meter installation examination device and investigation method |
| CN105845002A (en) * | 2016-04-28 | 2016-08-10 | 国网河南省电力公司技能培训中心 | Fault simulation device for low voltage power distribution substation |
| CN105845002B (en) * | 2016-04-28 | 2018-08-28 | 国网河南省电力公司技能培训中心 | A kind of low-voltage distribution transformer platform district failure simulation device |
| CN106023705A (en) * | 2016-06-21 | 2016-10-12 | 国网浙江省电力公司培训中心 | Missort troubleshooting analog simulation training device |
| CN107204144A (en) * | 2017-06-29 | 2017-09-26 | 郑州万特电气股份有限公司 | A kind of power supply station employee sales service training operation system |
| CN107290707A (en) * | 2017-07-27 | 2017-10-24 | 中国电力科学研究院 | A kind of method and system for recognizing power information acquisition system electrical energy meter fault |
| CN109448516A (en) * | 2018-11-19 | 2019-03-08 | 杭州华春科技有限公司 | A kind of electric leakage investigation simulation teching device, control method and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151014 Termination date: 20160609 |
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| CF01 | Termination of patent right due to non-payment of annual fee |