CN105738688A - Electrical inspection and locking device based on leakage current of high voltage equipment - Google Patents
Electrical inspection and locking device based on leakage current of high voltage equipment Download PDFInfo
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- CN105738688A CN105738688A CN201610302193.5A CN201610302193A CN105738688A CN 105738688 A CN105738688 A CN 105738688A CN 201610302193 A CN201610302193 A CN 201610302193A CN 105738688 A CN105738688 A CN 105738688A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16528—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values using digital techniques or performing arithmetic operations
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2503—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques for measuring voltage only, e.g. digital volt meters (DVM's)
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/62—Testing of transformers
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
- H02H3/042—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned combined with means for locating the fault
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
- H02H3/066—Reconnection being a consequence of eliminating the fault which caused disconnection
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Alarm Systems (AREA)
Abstract
The invention discloses an electrical inspection and locking device based on a leakage current of high voltage equipment. The device comprises a sensor arranged on the high voltage equipment, a signal modulating module connected with the sensor and a control module connected with the signal modulating module. The sensor is used for collecting a leakage current signal of the high voltage equipment. The signal modulating module is used for modulating the leakage current signal collected by the sensor and obtaining a voltage signal which can be recognized by the control module. The control module is used for obtaining the voltage signal, judging the magnitude of the voltage signal to generate a judging result, and sending a corresponding control signal respectively to an alarm module and the locking device to respectively control the alarm module and the locking device to perform a corresponding motion. According to the invention, the charged condition of the high voltage equipment can be judged according to the magnitude of the leakage current signal, the state of the high voltage equipment is indicated in time, alarming and the coerciveness locking are performed, a powerful technical safety measure can be provided in the state changing process of the high voltage equipment, and the reliability is high.
Description
Technical field
The present invention relates to high-voltage test technical field, particularly relate to a kind of electrical verification based on high pressure equipment leakage current and blocking device.
Background technology
HV live displaying module can obtain the electriferous state of high pressure equipment by the mode sensed, thus pointing out operation maintenance personnel not carry out hot line job, it is prevented that cause operating accident, be safety device common on current domestic electrical system high pressure equipment.
But, whether this module is only capable of displaying high pressure equipment charged, and when the leakage current of high pressure equipment is excessive (when conventional electrical equipment has hidden danger, initial stage performance is exactly that leakage current is excessive) when exceeding preset alarm threshold value, this module will not carry out preventive intervention procedure, make staff can not prevent and find the operation troubles of high pressure equipment in time, there is potential safety hazard, poor reliability.
Therefore, how to provide a kind of and can solve the problem that the electrical verification based on high pressure equipment leakage current that above-mentioned potential safety hazard, reliability are high and blocking device are the problems that those skilled in the art are presently required solution.
Summary of the invention
It is an object of the invention to provide a kind of electrical verification based on high pressure equipment leakage current and blocking device, the duty of high pressure equipment can be judged by this device according to the size of leakage current signal, indicate the duty of high pressure equipment in time, and carry out reporting to the police and mandatory locking, reliability is high.
For solving above-mentioned technical problem, the invention provides a kind of electrical verification based on high pressure equipment leakage current and blocking device, including:
It is arranged at the sensor on described high pressure equipment, for gathering the leakage current signal of described high pressure equipment；
The signal modulation module being connected with described sensor, for described sensor acquisition to described leakage current signal be modulated processing, obtain controlling the voltage signal that is capable of identify that of module；
The described control module being connected with described signal modulation module, is used for obtaining described voltage signal；The size of described voltage signal carries out judging to generate judged result, and sends respectively according to described judged result and control signal to alarm module and blocking device accordingly, control described alarm module respectively and described blocking device carries out corresponding action.
Preferably, described sensor is annular, and described covers disposed on sensor is equipped with closeable opening.
Preferably, described control module includes:
First judging unit, for when described leakage current signal is more than preset alarm threshold value, sending the first alarm signal to described alarm module, control described alarm module and carry out the first alert process.
Preferably, described preset alarm threshold value is:
The 110%-180% of the specified leakage current of described high pressure equipment.
Preferably, described control module also includes:
Second judging unit, for when described leakage current signal is from, when being changed to above described predetermined threshold value lower than predetermined threshold value, sending the second alarm signal to described alarm module, control described alarm module and carry out the second alert process.
Preferably, described alarm module includes LED and/or buzzer.
Preferably, when described alarm module includes display module, described control module includes:
3rd judging unit, for when described leakage current signal is more than described predetermined threshold value, send the 3rd and display signal to described display module, control described display module and carry out the 3rd display process, and send blocking order to described blocking device, control described blocking device output block signal to switching device；When described leakage current signal is less than described predetermined threshold value, sends the 4th and display signal to described display module, control described display module and carry out the 4th display process, and send unblock instruction extremely described blocking device, it is allowed to described switching device operates.
Preferably, described predetermined threshold value is:
When the voltage of described high pressure equipment is the load voltage value of 40%, the leakage current values of corresponding described high pressure equipment.
Preferably, described switching device includes electromagnetic lock and/or microcomputer anti-error computer key interface.
The invention provides a kind of electrical verification based on high pressure equipment leakage current and blocking device, this device can to the sensor acquisition being arranged on high pressure equipment to the size of voltage signal corresponding to leakage current signal judge, and send respectively according to judged result and to control signal to alarm module and blocking device accordingly, control alarm module respectively and blocking device carries out corresponding action.Due to the duty when high pressure equipment change (such as breaking down) time, the size of the leakage current on high pressure equipment also can change, cause sensor acquisition to the size of leakage current signal change, therefore control module and according to the size of voltage signal corresponding to leakage current signal, the duty of high pressure equipment can be judged, indicate the duty of high pressure equipment in time, and control alarm module and carry out reporting to the police and forced blocking, enable staff to prevent in time and find the operation troubles of high pressure equipment, solve the potential safety hazard that high pressure equipment presently, there are, reliability is high.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme in the embodiment of the present invention, the accompanying drawing used required in prior art and embodiment will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of electrical verification based on high pressure equipment leakage current provided by the invention and blocking device；
Fig. 2 is the structural representation of the another kind provided by the invention electrical verification based on high pressure equipment leakage current and blocking device；
Fig. 3 is another kind provided by the invention based on the flow chart of the electrical verification of high pressure equipment leakage current and the work process of blocking device.
Detailed description of the invention
The core of the present invention is to provide a kind of electrical verification based on high pressure equipment leakage current and blocking device, the duty of high pressure equipment can be judged by this device according to the size of leakage current signal, indicate the duty of high pressure equipment in time, and carry out reporting to the police and mandatory locking, reliability is high.
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
Embodiment one
The invention provides a kind of electrical verification based on high pressure equipment leakage current and blocking device, shown in Figure 1, Fig. 1 is the structural representation of a kind of electrical verification based on high pressure equipment leakage current provided by the invention and blocking device；This device includes:
It is arranged at the sensor 11 on high pressure equipment, for gathering the leakage current signal of high pressure equipment；
The signal modulation module 12 being connected with sensor 11, the leakage current signal for sensor 11 is collected is modulated processing, and obtains controlling the voltage signal that module 13 is capable of identify that；
The control module 13 being connected with signal modulation module 12, is used for obtaining voltage signal；The size of voltage signal carries out judging to generate judged result, and sends respectively according to judged result and control signal to alarm module 14 and blocking device 15 accordingly, control alarm module 14 respectively and blocking device 15 carries out corresponding action.
The invention provides a kind of electrical verification based on high pressure equipment leakage current and blocking device, this device can to the sensor acquisition being arranged on high pressure equipment to the size of voltage signal corresponding to leakage current signal judge, and send respectively according to judged result and to control signal to alarm module and blocking device accordingly, control alarm module respectively and blocking device carries out corresponding action.Due to the duty when high pressure equipment change (such as breaking down) time, the size of the leakage current on high pressure equipment also can change, cause sensor acquisition to the size of leakage current signal change, therefore control module and according to the size of voltage signal corresponding to leakage current signal, the duty of high pressure equipment can be judged, indicate the duty of high pressure equipment in time, and control alarm module and carry out reporting to the police and forced blocking, enable staff to prevent in time and find the operation troubles of high pressure equipment, solve the potential safety hazard that high pressure equipment presently, there are, reliability is high.
Embodiment two
Present invention also offers the another kind of electrical verification based on high pressure equipment leakage current and blocking device, shown in Figure 2, Fig. 2 is the structural representation of the another kind provided by the invention electrical verification based on high pressure equipment leakage current and blocking device；
Wherein, sensor 11 here is annular, and is provided with closeable opening on sensor 11.
It is understandable that, sensor 11 of the prior art is simply possible to use in the leakage current of monitoring spark gap, and cannot have other high pressure equipmentes of leakage current in monitoring substation, for instance transformer core, folder ground connection, sleeve pipe ground connection, PT ground connection, CT ground connection etc., range of application is little, and limitation is big.The equipment such as isolation switch, chopper are had due to the centre of substation bus bar inlet wire side Yu high pressure equipment, and spark gap is typically mounted at chopper front end, therefore existing sensor 11 cannot determine that whether the high pressure equipment of chopper rear end is charged, cannot completely monitor the high pressure equipment in whole transformer station, monitor comprehensive not.It addition, existing sensor 11 is closed loop cross-core type sensor, during the charged installation at the scene of closed loop cross-core type sensor, it is necessary to the down conductor of spark gap is transformed, installs complexity.
And the sensor 11 in the present invention is annular, and it is provided with closeable opening, it is only necessary to opened by the opening on sensor 11, placed to high pressure equipment to be measured by sensor 11, then closed by opening, it is not necessary to circuit is transformed, it is easy to install.And the sensor 11 in the present invention is not limited only to monitoring spark gap, the shape of size and sensor 11 by adjusting sensor 11 upper shed, it is possible to being arranged on by sensor 11 on the high pressure equipment arbitrarily needing monitoring, applied range, limitation is little.
Wherein, the shape of sensor 11 can be circular or square, and when sensor 11 is circular, its internal diameter is 3cm, and external diameter is 4cm.Certainly, shape and the size of sensor 11 are not specially limited by the present invention.
It addition, the size of sensor 11 upper shed needs to ensure that sensor 11 can be arranged on high pressure equipment to be measured.Certainly, the concrete size of sensor 11 upper shed is not limited by the present invention, the openings of sizes that staff can need according to practical situation designed, designed.
Wherein, sensor 11 here is that the electric current on the down conductor of high pressure equipment is acquired, and the leakage current signal collected is ac current signal.
As preferably, control module 13 here includes:
First judging unit, for when voltage signal is more than preset alarm threshold value, sending the first alarm signal to alarm module 14, controls alarm module 14 and carries out the first alert process.
It is understood that refer to, when voltage signal is more than preset alarm threshold value, the situation that the leakage current on high pressure equipment is excessive.The operation of the first judging unit can make staff find the fault of high pressure equipment in time, it is to avoid fault is the unmanned economic loss finding to cause for a long time, improves the reliability of power system.
Wherein, preset alarm threshold value here is:
The 110%-180% of the specified leakage current of high pressure equipment.
Certainly, preset alarm threshold value here is adjustable, and the size of preset alarm threshold value is not specially limited by the present invention, and staff can carry out sets itself according to the concrete condition of high pressure equipment to be measured.
As preferably, control module 13 here also includes:
Second judging unit, for when voltage signal is from, when being changed to above predetermined threshold value lower than predetermined threshold value, sending the second alarm signal to alarm module 14, controlling alarm module 14 and carry out the second alert process.
It is understandable that, when voltage signal is more than predetermined threshold value, represent that high pressure equipment is in electriferous state, when voltage signal is less than predetermined threshold value, represent that high pressure equipment is in power down mode, when voltage signal is from, when being changed to above predetermined threshold value lower than predetermined threshold value, representing that high pressure equipment becomes there is electricity from without electricity.Therefore the operation of the second judging unit can make staff find in time, and high pressure equipment is charged, avoids the situation of staff's mistakenly entering charged chamber to occur as much as possible, decrease the generation of accident, improve safety.
Wherein, alarm module 14 here includes LED and/or buzzer.
Such as, alarm module 14 here can include a LED and a buzzer, when alarm module 14 receives the first alarm signal, controls buzzer warning, when alarm module 14 receives the second alarm signal, controls lightening LED lamp.It addition, alarm module 14 can also include two different LED of color.
Certainly, type and the number of the components and parts that alarm module 14 specifically includes all are not specially limited by the present invention, as long as being capable of the purpose (can remind staff) reported to the police when alarm module 14 receives the first alarm signal or the second alarm signal.
As preferably, first alert process and the second alert process are preferably with the components and parts (LED that such as color is different) with different manifestations, it is easy to staff and distinguishes the duty of high pressure equipment according to the alarm condition of alarm module 14, thus taking to process accordingly operation.Certainly, the present invention to this and is not specially limited.
As preferably, when alarm module 14 includes display module, control module 13 and include:
3rd judging unit, for when voltage signal is more than predetermined threshold value, sending the 3rd and display signal to display module, control display module and carry out the 3rd display process, and send blocking order to blocking device 15, control blocking device 15 and export block signal to switching device 20；When voltage signal is less than predetermined threshold value, sends the 4th and display signal to display module, control display module and carry out the 4th display and process, and send and unlock instruction to blocking device 15, control blocking device 15 and export start signal to switching device 20.
Wherein, display module here is LED.Certainly, components and parts type and number that display module is adopted by the present invention are all not particularly limited, as long as display module is capable of the purpose of display after receiving the 3rd display signal or the 4th display signal.
As preferably, 3rd display processes and processes preferably with the components and parts (LED that such as color is different) with different manifestations from the 4th display, it is easy to staff and distinguishes the duty of high pressure equipment according to the display situation of display module, thus taking to process accordingly operation.Certainly, the present invention to this and is not specially limited.
It is understood that switching device 20 can carry out locking process after receiving block signal, switching device 20 can carry out unlatching process after receiving start signal.
Wherein, predetermined threshold value here is:
When the voltage of high pressure equipment is the load voltage value of 40%, the leakage current values of corresponding high pressure equipment.
Certainly, predetermined threshold value here is adjustable, and the size of predetermined threshold value is not specially limited by the present invention, can carry out sets itself according to the concrete condition of high pressure equipment to be measured.
It addition, switching device 20 here includes electromagnetic lock and/or microcomputer anti-error computer key interface.Certainly, the particular type of switching device 20 is not limited by the present invention.
It is understandable that, whether the operation of the 3rd judging unit can make display module display high pressure equipment charged, thus avoiding staff's mistakenly entering charged chamber, guaranteeing personal safety, preventing personnel's maloperation (such as by mistake closing ground cutter) as far as possible and the fault that causes and economic loss simultaneously.
As preferably, signal modulation module 12 here includes:
The I/V conversion module 16 being connected with sensor 11, for being converted to voltage signal by the leakage current signal that sensor 11 collects；
The filtration module 17 being connected with I/V conversion module 16, for filtering the high frequency spurs in voltage signal；
The amplification module 18 being connected with filtration module 17, for being amplified filtered voltage signal processing；
The benchmark adjusting apparatus 19 that input is connected with amplification module 18, outfan is connected with control module 13, for being overlapped with predetermined DC reference voltage signal by the voltage signal after amplification, improves the zero point of voltage signal.
Wherein, amplification module 18 here is operational amplifier.Operational amplifier can make the wide range current collection that electrical verification provided by the invention and blocking device realize 50 microamperes-500 milliamperes so that it is can adapt to different high pressure equipmentes, without carrying out hardware modifications and setting.
Certainly, the present invention does not limit the particular type of I/V conversion module 16, filtration module 17, amplification module 18 and benchmark adjusting apparatus 19, as long as being capable of the device of above-mentioned functions all within protection scope of the present invention.
It addition, the magnitude of voltage of predetermined DC reference voltage signal can be 2.5V.Certainly, this is not construed as limiting by the present invention.
As preferably, control module 13 here is MCU (MicrocontrollerUnit, micro-control unit).Certainly, this is not particularly limited by the present invention.
It is understandable that, after controlling the output signal that module 13 obtains benchmark adjusting apparatus 19, it is stored, control the analog-digital converter within module 13 and this output signal is carried out analog-to-digital conversion process, generate digital signal, control module 13 afterwards and the digital signal of generation is compared judgement with predetermined threshold value and preset alarm threshold value, obtain judged result, and according to judged result, export corresponding control signal by the first digital I/O port and control alarm module 14, and control blocking device 15 by the second corresponding control signal of digital I/O port output.
Wherein, blocking device 15 is coil form relay, the state of normally opened node and normally closed node by controlling relay, controls switching device 20.When switching device 20 is electromagnetic lock and microcomputer anti-error computer key, the normally opened node of relay is connected with the idle contact interface of electromagnetic lock and microcomputer anti-error computer key respectively, and the normally closed node of relay is in like manner.Certainly, the present invention does not limit the type of blocking device 15.
It addition, device provided by the invention can adopt alternating current-direct current 220V to power, it is possible to adopt battery to power, be provided with encapsulation casing outside this device, casing is provided with device gate.Only when adopting battery to power, for saving the power consumption of battery, when device gate is opened, opening signal is sent to controlling module 13 by the gate controlled switch on device gate, and control module 13 controls sensor 11 by the first prefixed time interval and gathers leakage current signal；After device gate closes, closure state signal is sent to controlling module 13 by the gate controlled switch on device gate, control module 13 and enter park mode, and wake up according to the second prefixed time interval, control to control sensor 11 after module 13 is waken up and gather leakage current signal.The situation that this kind of mode avoids electrical verification and blocking device is in non-sleep pattern all the time and causes power consumption excessive occurs.
Wherein, the first prefixed time interval is 1s.Second prefixed time interval is 3h.Certainly, the concrete numerical value of the first prefixed time interval and the second prefixed time interval is not limited by the present invention, and staff can according to practical situation sets itself.
For convenience of understanding to the present invention program, below simple introduction is done with regard to the concrete condition of electrical verification provided by the invention and the work process of blocking device:
Shown in Figure 3, Fig. 3 is another kind provided by the invention based on the flow chart of the electrical verification of high pressure equipment leakage current and the work process of blocking device.
Step s101: electrical verification and blocking device are for electrically activating；
Step s102: electrical verification and blocking device initialize, and latched switching device 20；
Step s103: judge that whether MCU self-inspection is normal, if it is, enter step s104, otherwise returns step s102；
Step s104: judge that whether sensor 11 wiring is correct, if it is, enter step s105；
Step s105: sensor 11 gathers the leakage current signal of high pressure equipment；
Step s106: the leakage current signal that sensor 11 collects is modulated processing by signal modulation module 12, obtains controlling the voltage signal that module 13 is capable of identify that；
Step s107:MCU obtains the voltage signal after signal modulation module 12 modulation, the size of voltage signal is judged, obtains the duty of high pressure equipment according to judged result；
Step s108: when voltage signal is less than predetermined threshold value, high pressure equipment is in power down mode, display module carries out the second display process, and switching device 20 is opened；
Step s109: when voltage signal is more than predetermined threshold value, high pressure equipment is in electriferous state, display module carries out the first display process, switching device 20 locking；
Step s110: when voltage signal is more than preset alarm threshold value, alarm module 14 carries out the first alert process；
Step s111: when high pressure equipment is from nothing electricity to when having electricity, alarm module 14 carries out the second alert process；
Step s112:MCU enters park mode；
Step s113:MCU wakes up by the second prefixed time interval, returns step s104 after waking up.
It addition, when controlling module 13 and judging that cell voltage is low, transmission low pressure displays signal to display module and carries out under-voltage display process.Certainly, these are only preferred version, this is not particularly limited by the present invention.
Compared with the device that embodiment one provides, the sensor in the device that the present embodiment provides is annular, and is provided with closeable opening, it is possible to is arranged on various high pressure equipment, and need not circuit be transformed, it is easy to install and applied range；Additionally, when the leakage current of high pressure equipment is excessive or high pressure equipment is from nothing electricity to when having electricity, control module in the present embodiment can control alarm module and report to the police, staff is made to find the fault of high pressure equipment in time, reliability is high, simultaneously, control module also controls display module and has shown whether high pressure equipment is charged, avoid staff's mistakenly entering charged chamber, ensure the personal safety of staff, prevent personnel's maloperation (such as charged by mistake close ground cutter) as far as possible and the fault that causes and economic loss simultaneously.
It should be noted that, in this manual, the relational terms of such as first and second or the like is used merely to separate an entity or operation with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include the process of a series of key element, method, article or equipment not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or equipment.When there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in including the process of described key element, method, article or equipment.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.The multiple amendment of these embodiments be will be apparent from for those skilled in the art, and generic principles defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (9)
1. the electrical verification based on high pressure equipment leakage current and blocking device, it is characterised in that including:
It is arranged at the sensor on described high pressure equipment, for gathering the leakage current signal of described high pressure equipment；
The signal modulation module being connected with described sensor, for described sensor acquisition to described leakage current signal be modulated processing, obtain controlling the voltage signal that is capable of identify that of module；
The described control module being connected with described signal modulation module, is used for obtaining described voltage signal；The size of described voltage signal carries out judging to generate judged result, and sends respectively according to described judged result and control signal to alarm module and blocking device accordingly, control described alarm module respectively and described blocking device carries out corresponding action.
2. device according to claim 1, it is characterised in that described sensor is annular, and described covers disposed on sensor is equipped with closeable opening.
3. device according to claim 2, it is characterised in that described control module includes:
First judging unit, for when described leakage current signal is more than preset alarm threshold value, sending the first alarm signal to described alarm module, control described alarm module and carry out the first alert process.
4. device according to claim 3, it is characterised in that described preset alarm threshold value is:
The 110%-180% of the specified leakage current of described high pressure equipment.
5. device according to claim 3, it is characterised in that described control module also includes:
Second judging unit, for when described leakage current signal is from, when being changed to above described predetermined threshold value lower than predetermined threshold value, sending the second alarm signal to described alarm module, control described alarm module and carry out the second alert process.
6. the device according to any one of claim 1-5, it is characterised in that described alarm module includes LED and/or buzzer.
7. device according to claim 5, it is characterised in that when described alarm module includes display module, described control module includes:
3rd judging unit, for when described leakage current signal is more than described predetermined threshold value, send the 3rd and display signal to described display module, control described display module and carry out the 3rd display process, and send blocking order to described blocking device, control described blocking device output block signal to switching device；When described leakage current signal is less than described predetermined threshold value, sends the 4th and display signal to described display module, control described display module and carry out the 4th display process, and send unblock instruction extremely described blocking device, it is allowed to described switching device operates.
8. the device according to claim 5 or 7, it is characterised in that described predetermined threshold value is:
When the voltage of described high pressure equipment is the load voltage value of 40%, the leakage current values of corresponding described high pressure equipment.
9. device according to claim 7, it is characterised in that described switching device includes electromagnetic lock and/or microcomputer anti-error computer key interface.
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| CN201610302193.5A CN105738688A (en) | 2016-05-09 | 2016-05-09 | Electrical inspection and locking device based on leakage current of high voltage equipment |
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| CN201610302193.5A CN105738688A (en) | 2016-05-09 | 2016-05-09 | Electrical inspection and locking device based on leakage current of high voltage equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490243A (en) * | 2018-04-28 | 2018-09-04 | 珠海优特电力科技股份有限公司 | Overhead transmission line type electroscopic device and blocking device |
| CN110286294A (en) * | 2019-07-25 | 2019-09-27 | 云南电网有限责任公司电力科学研究院 | A kind of self-energizing device and method for monitoring of leaking electricity |
| CN110286293A (en) * | 2019-07-25 | 2019-09-27 | 云南电网有限责任公司电力科学研究院 | A kind of self-energizing electric leakage monitoring method and system based on leakage current |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203894317U (en) * | 2014-03-19 | 2014-10-22 | 浙江科畅电子有限公司 | Online monitoring device used for leakage current of high-voltage cables |
| CN204044232U (en) * | 2014-08-25 | 2014-12-24 | 武汉共创伏安科技有限公司 | A kind of high voltage display device by monitoring leakage current of an arrester |
| CN104423284A (en) * | 2013-09-06 | 2015-03-18 | 西安司坤电子科技有限公司 | High-voltage electrification displaying and locking device |
| CN204216417U (en) * | 2014-09-17 | 2015-03-18 | 厦门安达兴电气集团有限公司 | A kind of HV live displaying locking unit |
| CN105116203A (en) * | 2015-08-10 | 2015-12-02 | 国网浙江省电力公司湖州供电公司 | High-voltage presence indication device through monitoring leakage current of high voltage equipment |
| CN205786828U (en) * | 2016-05-09 | 2016-12-07 | 国网浙江省电力公司杭州供电公司 | A kind of electrical verification based on high pressure equipment leakage current and blocking device |
-
2016
- 2016-05-09 CN CN201610302193.5A patent/CN105738688A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104423284A (en) * | 2013-09-06 | 2015-03-18 | 西安司坤电子科技有限公司 | High-voltage electrification displaying and locking device |
| CN203894317U (en) * | 2014-03-19 | 2014-10-22 | 浙江科畅电子有限公司 | Online monitoring device used for leakage current of high-voltage cables |
| CN204044232U (en) * | 2014-08-25 | 2014-12-24 | 武汉共创伏安科技有限公司 | A kind of high voltage display device by monitoring leakage current of an arrester |
| CN204216417U (en) * | 2014-09-17 | 2015-03-18 | 厦门安达兴电气集团有限公司 | A kind of HV live displaying locking unit |
| CN105116203A (en) * | 2015-08-10 | 2015-12-02 | 国网浙江省电力公司湖州供电公司 | High-voltage presence indication device through monitoring leakage current of high voltage equipment |
| CN205786828U (en) * | 2016-05-09 | 2016-12-07 | 国网浙江省电力公司杭州供电公司 | A kind of electrical verification based on high pressure equipment leakage current and blocking device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108490243A (en) * | 2018-04-28 | 2018-09-04 | 珠海优特电力科技股份有限公司 | Overhead transmission line type electroscopic device and blocking device |
| CN110286294A (en) * | 2019-07-25 | 2019-09-27 | 云南电网有限责任公司电力科学研究院 | A kind of self-energizing device and method for monitoring of leaking electricity |
| CN110286293A (en) * | 2019-07-25 | 2019-09-27 | 云南电网有限责任公司电力科学研究院 | A kind of self-energizing electric leakage monitoring method and system based on leakage current |
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