CN203607923U - Emergency distribution system with insulation on-line monitoring function - Google Patents
Emergency distribution system with insulation on-line monitoring function Download PDFInfo
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- CN203607923U CN203607923U CN201320732542.9U CN201320732542U CN203607923U CN 203607923 U CN203607923 U CN 203607923U CN 201320732542 U CN201320732542 U CN 201320732542U CN 203607923 U CN203607923 U CN 203607923U
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 34
- 238000009413 insulation Methods 0.000 title claims abstract description 27
- 230000000903 blocking effect Effects 0.000 claims description 5
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 206010035148 Plague Diseases 0.000 description 1
- 241000700159 Rattus Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses an emergency distribution system with an insulation on-line monitoring function. The emergency distribution system is mainly used for emergency power stations. The emergency distribution system comprises at least a generator set, at least a wire inlet cabinet, at least a wire outlet cabinet, a voltage adjustment unit, a control unit, and a protection unit, wherein the cable intervals of the wire inlet and the wire outlet are respectively provided with a voltage inductor; and the voltage adjustment unit is connected to a secondary side of the voltage inductor through the control unit and the protection unit. An output side of the voltage adjustment unit is allowed to obtain a 0 to 100 V alternate current voltage, and the voltage adjustment unit is also provided with an over-voltage and over-current alarm function. The control unit is provided with an input connection point and an output connection point. The input connection point is allowed to control the input of the control unit, and the output connection point is capable of showing a real-time state of the control unit. The emergency distribution system employs a reverse charging work mode by utilizing the voltage transformer, the voltage of a high-voltage device is increased gradually, and an insulation condition of the system is judged through detecting the current value and the voltage value, thus safe operations of the voltage adjustment unit and the emergency system are guaranteed. The emergency distribution system has advantages of being convenient to implement, and being safe and reliable.
Description
Technical field
The utility model relates to power supply technique field, relates in particular to a kind of casualty power distribution system with function of insulation online monitoring.
Background technology
At present, Emergency generator, is more and more applied to stage load units such as glass industry, steel industry, megastore and hospital.
Generating set, generally realizes emergency starting by control system, in the time of civil power decompression, starts rapidly diesel generating set, and sets up gradually voltage.Close generator main switch, outlet switch by automatic or manual, give the power supply of the power distribution equipment including bus and outlet cable.Provide emergency power supply to scene.
At civil power under normal circumstances, generating set is in standby emergency mode.Primary system is not charged, and if things go on like this, insulation status is uncertain.The short circuit accident that cannot avoid the plague of rats and cable insulation reduction etc. to cause.This short trouble, in the past regularly when test-run a machine, during by insulation meter remote measurement resistance, was once found in time.But in the time of civil power decompression generator emergency starting, prior art cannot be found potential faults.Short trouble also cannot be avoided, once accident occurs, can not recover at short notice normal.
Summary of the invention
The utility model object has been to provide a set of casualty power distribution system with function of insulation online monitoring.
In order to solve above-mentioned technical problem, the technical solution adopted in the utility model is: the casualty power distribution system with function of insulation online monitoring, comprise at least one generating set, at least one incoming line cabinet, at least one outgoing line cabinet, it is characterized in that, also comprise pressure regulation unit, control unit and protected location; In the cable interval of described incoming line cabinet and outgoing line cabinet, voltage transformer is all housed; Described pressure regulation unit is connected in the secondary side of described voltage transformer by control unit and protected location.
Described pressure regulation unit outlet side can recall 0～100V alternating voltage; Also there is in addition overvoltage, overcurrent warning function.Control unit open into, output contact.Open into the lockable control unit of contact and drop into, output contact and show control unit real-time status.This system is utilized voltage transformer reverse charge working method, and to high-tension apparatus boosted voltage gradually, by real-time voltage and magnitude of current ratio, estimation line impedance, judges line insulation situation.By detection, protection and blocking function, guarantee pressure regulation unit and emergency system safe operation.There is convenient enforcement, safe and reliable advantage.
As preferably, described pressure regulation unit is automatic Regulation unit or manual voltage regulation unit.
As preferably, described pressure regulation unit is level and smooth pressure regulation unit or has contrast to press unit.
As preferably, described pressure regulation unit comprises current detection module, and in the time that electric current reaches set point, described device is automatically out of service, and output voltage makes zero, simultaneously output alarm signal.
As preferably, described pressure regulation unit comprises voltage detection module, and in the time that voltage reaches set point, described device is automatically out of service, and output voltage makes zero, simultaneously output alarm signal.
As preferably, described pressure regulation unit comprises impedance detection module,, by detecting voltage and detecting electric current, by division arithmetic, estimates system impedance, has judged whether system short-circuit.In the time that system impedance reaches set point, described device is automatically out of service, and output voltage makes zero, simultaneously output alarm signal.
As preferably, described protected location adopts the electric elements with short circuit and overload protection function and insulation blocking function.
As preferably, described pressure regulation unit, control unit and protected location, can be installed on separately in voltage transformer cabinet, also can in incoming line cabinet, outgoing line cabinet and voltage transformer cabinet, install respectively respectively.
The beneficial effects of the utility model are:
Realized the high voltage distribution installation continuous on-line monitoring function that insulate, Monitoring Line situation at any time, finds system hidden danger in time, and assurance system is in emergency rating, conveniently implements, safe and reliable.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the theory diagram that the utlity model has the casualty power distribution system embodiment of function of insulation online monitoring.
Fig. 2 is the principle detail drawing that the utlity model has the casualty power distribution system embodiment of function of insulation online monitoring.
Fig. 3 is the control unit schematic diagram that the utlity model has the casualty power distribution system embodiment of function of insulation online monitoring.
Mark in figure: 1-incoming line cabinet, 2-voltage transformer cabinet, 3-outgoing line cabinet; 4-power distribution cabinet bus, 7-control unit exit button, 8-control unit drops into button; 10-Emergency generator, 20-100V AC power, 30-protective load; 11-generator main switch, 12-primary voltage instrument transformer, 22-bus-bar potential transformer; 31-outgoing line cabinet switch, 32-outlet voltage transformer, 23-protected location; 24-control unit, 25-pressure regulation unit.
121-primary voltage control relay, 241-busbar voltage control relay, 321-outlet voltage monitoring relay, 242-pressure regulation cell voltage control relay, 243-pressure regulation unit over-voltage monitoring relay, 244-pressure regulation unit overcurrent monitoring relay, 101-operation state of generator control relay, 240-contactor, 2401-contactor auxiliary contact.
Embodiment
Fig. 1 is the casualty power distribution system with function of insulation online monitoring, is made up of incoming line cabinet 1, voltage transformer cabinet 2, outgoing line cabinet 3.Voltage transformer 12 and 32 is equipped with respectively at the cable interval of incoming line cabinet 1 and outgoing line cabinet 3.Pressure regulation unit 25 is housed in voltage transformer cabinet 2, and pressure regulation unit 25 goes out end by protected location 23 and control unit 24, is connected in the secondary side of bus-bar potential transformer 22; Pressure regulation unit 25 enters end and connects 100V AC power 20.It is adjustable that pressure regulation unit 25 has voltage, electric current, voltage detecting blocking function.
Specifically, in Fig. 2, pressure regulation unit 25 is bidirectional triode thyristor; protected location 23 is fuse; control unit 24 is by primary voltage control relay 121, outlet voltage monitoring relay 321, busbar voltage control relay 241; pressure regulation cell voltage control relay 242; pressure regulation unit over-voltage monitoring relay 243, pressure regulation unit overcurrent monitoring relay 244, operation state of generator control relay 101; contactor 240, contactor auxiliary contact 2401 forms.
Fig. 3 is control unit, comprises control unit exit button 7, and control unit drops into button 8.The necessary condition that control unit 24 drops into is: primary voltage control relay 121, busbar voltage control relay 241, outlet voltage monitoring relay 321, pressure regulation unit 25 voltage monitoring relays 242, pressure regulation unit 25 over-voltage monitoring relays 243, pressure regulation unit 25 overcurrent monitoring relays 244, operation state of generator control relay 101, all attonity.That is to say, control unit is thrown 24 necessary conditions that enter and is: inlet wire, outlet and bus no-voltage; Pressure regulation unit no current, Non voltage output; Generating set does not start.
In Fig. 3; protection after control unit 24 drops into is: pressure regulation unit 25 over-voltage monitoring relays 243, pressure regulation unit 25 overcurrent monitoring relays 244, operation state of generator control relay 101; wherein arbitrary action, all will protect pressure regulation unit 25 out of service.That is to say, the protection after control unit 24 drops into is: when overvoltage, overcurrent and generator enabling signal occur, pressure regulation unit 25 exits automatically.
The output blocking function of control unit 24: after control unit 24 drops into, contactor auxiliary contact 2401 closures, the lockable generator resistance of this signal starts.
The operation principle of the present embodiment:
First guarantee the necessary condition that control unit drops into; Press control unit and drop into button 8, make contactor 240 closures; Regulate pressure regulation unit 25 bidirectional triode thyristor V, gradually boosted voltages; By bus-bar potential transformer 22, to power distribution cabinet bus 4, and line cable reverse charge; By the ratio of detection limit voltage and current, draw insulating resistance value.
As in the process of boosting, the overcurrent monitoring relay 244 of pressure regulation unit moves, and prompting insulation is too low.By adjusting the operating value of pressure regulation unit 25 overcurrent monitoring relays 244, also just equal to adjust the minimum of institute's examining system insulation.
The present embodiment can charge for a long time and detect system, assurance system before emergency service in normal condition.When emergency generator starts, the 101 break contact actions of operation state of generator control relay, contactor 240 coil losing electricities, cutting-off controlling unit.By pressure regulation unit 25 and primary system isolation, guarantee emergency system safe and reliable operation.
The present embodiment installs pressure regulation unit 25, control unit 24 and protected location 23 additional on the basis of common distribution voltage instrument transformer cabinet; By necessary protection and locking, easily implement.
Above-described the utility model execution mode, does not form the restriction to the utility model protection range.Any modification of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in claim protection range of the present utility model.
Claims (8)
1. there is the casualty power distribution system of function of insulation online monitoring, comprise at least one generating set, at least one incoming line cabinet, at least one outgoing line cabinet, it is characterized in that, also comprise pressure regulation unit, control unit and protected location; In the cable interval of described incoming line cabinet and outgoing line cabinet, voltage transformer is all housed; Described pressure regulation unit is connected in the secondary side of described voltage transformer by control unit and protected location.
2. the casualty power distribution system with function of insulation online monitoring according to claim 1, is characterized in that: described pressure regulation unit outlet side can recall 0～100V alternating voltage.
3. the casualty power distribution system with function of insulation online monitoring according to claim 1, is characterized in that: described pressure regulation unit is automatic Regulation unit or manual voltage regulation unit.
4. the casualty power distribution system with function of insulation online monitoring according to claim 1, is characterized in that: described pressure regulation unit is level and smooth pressure regulation unit or has contrast to press unit.
5. the casualty power distribution system with function of insulation online monitoring according to claim 1, is characterized in that: described pressure regulation unit comprises overvoltage, overcurrent warning and locking output module.
6. the casualty power distribution system with function of insulation online monitoring according to claim 1, is characterized in that: described control unit is provided with to be opened into contact, output contact; Described opening into the lockable control unit of contact dropped into, described in output contact and show control unit real-time status.
7. the casualty power distribution system with function of insulation online monitoring according to claim 1, is characterized in that: described protected location comprises short circuit, overload protection, insulation blocking module.
8. according to claim 1 have a function of insulation online monitoring high tension distribution system, it is characterized in that: also comprise voltage transformer cabinet; Described pressure regulation unit, control unit and protected location are installed on separately in voltage transformer cabinet.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320732542.9U CN203607923U (en) | 2013-11-20 | 2013-11-20 | Emergency distribution system with insulation on-line monitoring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320732542.9U CN203607923U (en) | 2013-11-20 | 2013-11-20 | Emergency distribution system with insulation on-line monitoring function |
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| Publication Number | Publication Date |
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| CN203607923U true CN203607923U (en) | 2014-05-21 |
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| CN201320732542.9U Expired - Fee Related CN203607923U (en) | 2013-11-20 | 2013-11-20 | Emergency distribution system with insulation on-line monitoring function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112578319A (en) * | 2021-01-12 | 2021-03-30 | 国网山东省电力公司成武县供电公司 | Low-voltage distribution cabinet equipment line connection point monitoring alarm device |
-
2013
- 2013-11-20 CN CN201320732542.9U patent/CN203607923U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112578319A (en) * | 2021-01-12 | 2021-03-30 | 国网山东省电力公司成武县供电公司 | Low-voltage distribution cabinet equipment line connection point monitoring alarm device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Emergency distribution system with insulation on-line monitoring function Effective date of registration: 20200713 Granted publication date: 20140521 Pledgee: Beijing State Owned Financial Leasing Co.,Ltd. Pledgor: WUHU TUNGHSU PHOTOELECTRIC SCIENCE AND TECHNOLOGY Co.,Ltd. Registration number: Y2020990000738 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140521 |