CN210376499U - High-voltage live display device capable of indicating induction voltage - Google Patents
High-voltage live display device capable of indicating induction voltage Download PDFInfo
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- CN210376499U CN210376499U CN201921207243.7U CN201921207243U CN210376499U CN 210376499 U CN210376499 U CN 210376499U CN 201921207243 U CN201921207243 U CN 201921207243U CN 210376499 U CN210376499 U CN 210376499U
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- 230000002159 abnormal effect Effects 0.000 abstract description 3
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- 238000012423 maintenance Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
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- 230000003321 amplification Effects 0.000 description 1
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
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- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
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Abstract
The utility model discloses a high-voltage live display device capable of indicating induction voltage, which comprises a signal isolation transmitting unit, a signal conditioning circuit unit, a main control processing unit, a safe voltage alarm output unit and a live output unit; the input end of the signal isolation transmitting unit is externally connected with a voltage transformer, and the safe voltage alarm output unit executes an indication alarm action when the induced voltage value is higher than a preset safe voltage value. The high-voltage electrified display device capable of indicating the induction voltage prompts that a line where a maintainer is located has an overhigh induction voltage, a hung ground wire has poor contact or is abnormal in connection, whether the line has induction electricity or not is judged from the electrified root point of the line, the maintainer can know the safe voltage condition of the line at the first time, and electric shock accidents are avoided.
Description
Technical Field
The utility model relates to an electric power field especially relates to a can instruct induced voltage's high voltage electricity display device.
Background
The high-voltage live display device is a device for displaying the live state of a high-voltage line, is directly installed on a high-voltage power transmission and distribution facility, and can intuitively display whether the high-voltage power transmission and distribution facility is provided with a prompt safety device for operating voltage. The input signal of the existing high-voltage charged display device is provided by a porcelain insulator support type sensor or an air insulation induction type sensor. Both of these sensors have low accuracy and air-insulated inductive sensors are susceptible to electric field interference. The existing high-voltage charged display device has the following judgment range:
1) when the line voltage Un is less than 15%, determining that no electricity exists;
2) in the range of 15% -40% of line voltage Un, the transition state can judge whether electricity exists or not;
3) and if the line voltage is greater than 40% Un, judging that the power is available.
Therefore, the high-voltage line may indicate no electricity under the condition of 40% line voltage Un, if the rated voltage of the high-voltage line is 110KV, and the phase voltage is 63.5KV, then 0.4Un is 25.4KV, which is usually caused by the residual voltage of the line or the induced electricity of the adjacent line, and the specification of the electric power is that when the high-voltage live display device displays no electricity, a maintainer can repair the high-voltage line after hanging the ground knife or the ground wire to eliminate the residual voltage. In case of abnormal ground wire or asynchronous ground wire taking-off during operation, 25.4KV voltage is enough to cause casualty accidents. Therefore, the high-voltage live display device is necessary to increase the inductive voltage indicating function and immediately give an alarm when the voltage exceeds a certain safety value.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can instruct induced voltage's high-voltage electricity display device to whether suggestion maintainer place circuit has too high induced voltage, avoids the occurence of failure.
To achieve the purpose, the utility model adopts the following technical proposal:
a high-voltage live display device capable of indicating induced voltage comprises a signal isolation transmitting unit, a signal conditioning circuit unit, a main control processing unit, a safe voltage alarm output unit and a live output unit;
the input end of the signal isolation transmitting unit is externally connected with a voltage transformer, and the output end of the signal isolation transmitting unit is electrically connected with the input end of the signal conditioning circuit unit;
the output end of the signal conditioning circuit unit is electrically connected with the input end of the main control processing unit, the input end of the safety voltage alarm output unit, the input end of the electrified output unit and the output end of the main control processing unit are electrically connected, and the safety voltage alarm output unit executes an indication alarm action when the induction voltage value is higher than a preset safety voltage value.
Preferably, the safety voltage alarm output unit comprises a safety locking relay circuit, the safety locking relay circuit comprises a safety indication relay and a switch tube Q1, a power supply is electrically connected with a collector of the switch tube Q1 through the safety indication relay, a base of the switch tube Q1 is electrically connected with an output end of the main control processing unit, and an emitter of the switch tube Q1 is grounded.
Preferably, the safety voltage warning output unit further includes a safety voltage indicator lamp circuit, the safety voltage indicator lamp circuit includes a safety indicator lamp L1 and a switch tube Q2, one end of the safety indicator lamp L1 is electrically connected with a collector of the switch tube Q2, the other end of the safety indicator lamp L1 is electrically connected with a power supply, a base of the switch tube Q2 is electrically connected with an output end of the main control processing unit, and an emitter of the switch tube Q2 is grounded.
Preferably, the safety voltage alarm output unit further comprises a wireless communication circuit, and an input end of the wireless communication circuit is electrically connected with an output end of the main control processing unit.
Preferably, the system further comprises an application parameter setting interface, and the application parameter setting interface is electrically connected with the input end of the main control processing unit.
Preferably, the live output unit includes a live indication relay, which is latched when normally charged.
Preferably, the live output unit further comprises a live indicator lamp, and the live indicator lamp indicates that the high-voltage line meets the state of the conventional live judgment condition.
In the high-voltage live display device capable of indicating the induced voltage, the input end of the signal isolation transmitting unit is externally connected with a voltage transformer, the voltage transformer is connected to a high-voltage line to be detected, so that an input signal of the signal isolation transmitting unit is provided by the voltage transformer connected to the high-voltage line, and the safe voltage alarm output unit executes an indication alarm action when the induced voltage value is higher than a preset safe voltage value, so as to prompt that the line where a maintainer is located has the overhigh induced voltage, the articulated ground wire has poor contact or abnormal connection, whether the line has the induced voltage or not is judged from the electrified root point of the line, the maintainer can know the safe voltage condition of the line at the first time, and electric shock accidents are avoided.
Drawings
The accompanying drawings are provided to further illustrate the present invention, but the content in the accompanying drawings does not constitute any limitation to the present invention.
Fig. 1 is a schematic structural diagram of a high voltage live display device capable of indicating an induced voltage according to an embodiment of the present invention;
fig. 2 is a circuit structure diagram of a safety voltage alarm output unit according to one embodiment of the present invention.
Wherein: a signal isolation transmitting unit 1; a signal conditioning circuit unit 2; a main control processing unit 3; a safe voltage alarm output unit 4; a charged output unit 5; a live indication relay 51; a live indicator lamp 52; a safety latching relay circuit 41; a safety voltage indicator circuit 42; a safety indicator lamp L1; a safety indication relay 411; a wireless communication circuit 43; switching tubes Q1, Q2; a parameter setting interface 6 is applied.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The high-voltage live display device capable of indicating induced voltage of the embodiment, as shown in fig. 1, includes a signal isolation transmitting unit 1, a signal conditioning circuit unit 2, a main control processing unit 3, a safety voltage alarm output unit 4 and a live output unit 5;
the input end of the signal isolation transmitting unit 1 is externally connected with a voltage transformer, and the output end of the signal isolation transmitting unit 1 is electrically connected with the input end of the signal conditioning circuit unit 2;
the output end of the signal conditioning circuit unit 2 is electrically connected with the input end of the main control processing unit 3, the input end of the safety voltage alarm output unit 4, the input end of the electrified output unit 5 and the output end of the main control processing unit 3 are electrically connected, and the safety voltage alarm output unit 4 executes an indication alarm action when the induction voltage value is higher than a preset safety voltage value.
In the high-voltage live display device capable of indicating the induced voltage, the input end of the signal isolation transmitting unit 1 is externally connected with a voltage transformer, the voltage transformer is connected to a high-voltage line to be detected, so that an input signal of the signal isolation transmitting unit 1 is provided by the voltage transformer connected to the high-voltage line, the signal isolation transmitting unit 1 converts the input signal into an internal signal meeting the working condition of an internal circuit by using an electrical isolation piece and realizes electrical isolation, and through isolation transmitting, the induced voltage can be indicated and output, and the reliability of live display is improved; the internal signal is carried to main control processing unit 3 after being conditioned by signal conditioning circuit unit 2, because the input signal is provided by the voltage transformer who connects in high voltage transmission line, therefore main control processing unit 3 can obtain charged state and induced voltage value from the internal signal, thereby whether discerning induced voltage value and being higher than predetermined safe voltage value, and report an emergency and ask for help or increased vigilance through safe voltage warning output unit 4 when induced voltage value is higher than predetermined safe voltage value and instruct the action, in order to indicate that maintainer's circuit has too high induced voltage, the ground wire that articulates has contact failure or connects unusually, whether there is the induced electricity at the root point judgement circuit from the electrified circuit, the very first time lets maintainer know the safe voltage condition of circuit, avoid the electric shock accident. The electrified output unit 5 is an existing electrified indication output unit and can visually display whether the high-voltage power transmission and distribution facility has operating voltage.
The precision of the voltage transformer can be set to be 0.5 level, 1.0 level but not limited to the above precision level, the high-voltage live display device capable of indicating the induction voltage uses the signal of the high-precision voltage transformer as an input signal, the high-precision sampling of the input signal is ensured, and the high-precision display is carried out on the live voltage of the high-voltage line, so that the maintainers of the high-voltage line are reminded, and the personal safety of the maintainers is protected.
The signal isolation transmitting unit 1 is an existing signal isolation transmitter, is applied to signal transmission in a high common-mode voltage environment, and isolates a voltage transformer and a high-voltage live display device, so that the common-mode rejection ratio is improved, and the high-voltage live display device and personal safety are protected.
The signal conditioning circuit unit 2 uses a commercially available and conventional signal conditioning circuit, the signal conditioning circuit unit 2 conditions the internal signal to be within a signal range that can be normally acquired by the main control processing unit 3, and the signal conditioning circuit unit 2 specifically converts a signal to be detected (i.e., an input signal of the present embodiment) into a standard signal that can be recognized by an acquisition device (i.e., the main control processing unit 3 of the present embodiment) through operations such as amplification, filtering, and the like, so as to ensure that the induced voltage can be indicated and output; the conditioning operation is to change the input signal type and output it by using internal devices, such as filters, converters, amplifiers, etc. Because the direct input signal does not match with the acquisition port of the main control processing unit 3, the signal cannot be directly acquired, and the conditioning is necessary.
Preferably, as shown in fig. 2, the safety voltage alarm output unit 4 includes a safety lockout relay circuit 41, the safety lockout relay circuit 41 includes a safety indication relay 411 and a switch tube Q1, a power supply and a collector of the switch tube Q1 are electrically connected through the safety indication relay 411, a base of the switch tube Q1 is electrically connected with an output terminal of the main control processing unit 3, and an emitter of the switch tube Q1 is grounded.
The safety locking relay circuit 41 operates the safety locking safety indication relay 411 according to the judgment state of the main control processing unit 3. When the main control processing unit 3 recognizes that the induced voltage value is lower than the preset safe voltage value, the main control processing unit 3 sends a cut-off driving signal to the switching tube Q1 to cut off the switching tube Q1, so that the safety indication relay 411 does not act. When the main control processing unit 3 recognizes that the induced voltage value is higher than the preset safe voltage value, the main control processing unit 3 sends a turn-on driving signal to the switching tube Q1 to turn on the switching tube Q1, so that the safety indication relay 411 operates, i.e., is locked. The equipment (such as on-site alarm, background alarm interface, ground wire articulate electric control circuit) of user end is connected with the contact of safety indication relay 411, and the suggestion induced voltage value is higher than the safe voltage value of predetermineeing, lets the maintainer know the safe voltage condition of circuit, avoids the electric shock accident.
Preferably, as shown in fig. 2, the safety voltage warning output unit 4 further includes a safety voltage indicator lamp circuit 42, the safety voltage indicator lamp circuit 42 includes a safety indicator lamp L1 and a switching tube Q2, one end of the safety indicator lamp L1 is electrically connected to a collector of the switching tube Q2, the other end of the safety indicator lamp L1 is electrically connected to a power supply, a base of the switching tube Q2 is electrically connected to an output end of the main control processing unit 3, and an emitter of the switching tube Q2 is grounded.
The safety voltage indicator lamp circuit 42 is used for indicating the state that the induced voltage value is higher than the preset safety voltage value through the safety indicator lamp L1. When the main control processing unit 3 recognizes that the induced voltage value is higher than the preset safe voltage value, the main control processing unit 3 sends a trigger signal to the switching tube Q2 to turn on the switching tube Q2, so that the safety indicator lamp L1 indicates a state where the induced voltage value is higher than the preset safe voltage value. The switching tubes Q1 and Q2 are switching triodes.
Thereby through safety light L1 state change, suggestion induced voltage value is higher than predetermined safe magnitude of voltage, lets the maintainer know the safe voltage condition of circuit, avoids the electric shock accident. The indicating mode of the safety indicator light L1 includes but is not limited to lighting and flashing; for example, it may be set that the safety indicator lamp L1 is turned on when the induced voltage value is higher than a preset safety voltage value; or when the induced voltage value is higher than the preset safe voltage value, the safety indicator lamp L1 flickers.
Preferably, as shown in fig. 2, the safety voltage alarm output unit 4 further includes a wireless communication circuit 43, and an input end of the wireless communication circuit 43 is electrically connected to an output end of the main control processing unit 3.
The wireless communication circuit 43 is adapted to send a prompt message to the communication terminal when the induced voltage value is higher than the preset safe voltage value. Therefore, when the induction voltage value is higher than the preset safe voltage value, the reminding information is sent to the communication terminal of the maintenance personnel through the wireless communication circuit 43 at the first time, the induction voltage value is prompted to be higher than the preset safe voltage value, the maintenance personnel can not directly look over the high-voltage electrified display device, the communication terminal can learn the condition of the overhigh induction voltage at any time, and the prompt of the personal safety of the maintenance personnel is realized. The communication terminal is a wireless communication terminal worn by a maintainer, such as an electronic device with a wired or wireless communication function, such as a helmet, a bracelet, a smart phone, a notebook computer, a tablet computer and the like. The wireless communication circuit 43 is a conventional circuit available on the market, and the wireless communication mode of the wireless communication circuit 43 may include but is not limited to WIFI, ZigBee, bluetooth, GPRS, LoRa, 3G network, 4G network, and 5G network.
Preferably, as shown in fig. 1, the system further includes an application parameter setting interface 6, where the application parameter setting interface 6 is electrically connected to an input end of the main control processing unit 3. The application parameter setting interface 6 provides an interface for setting application parameters of the main control processing unit 3, so that a maintainer can conveniently set the application parameters.
The parameter settings of the application parameter setting interface 6 may include a voltage transformer transformation ratio setting, a phase sequence mode setting, and a safe voltage value setting. Therefore, the maintainer sets the transformation ratio, the phase sequence mode and the safe voltage value of the voltage transformer of the high-voltage live display device capable of indicating the induced voltage through the application parameter setting interface 6. The main control processing unit 3 is a conventional main control processing chip sold in the market, judges the charged state of the line and calculates the induced voltage value of the line according to the parameters set by the application parameter setting interface 6, and compares whether the induced voltage value is higher than a preset safe voltage value.
Preferably, the charging output unit 5 includes a charging indication relay 51, and the charging indication relay 51 is locked when being charged normally.
Preferably, the live output unit 5 further includes a live indicator lamp 52, and the live indicator lamp 52 indicates a state where the high-voltage line satisfies a normal live judgment condition.
And the charged output unit 5 judges and outputs the state of a charged indicating relay and the state of a charged indicating lamp according to the charged state of the existing high-voltage charged display device. For example, when the main control processing unit 3 determines that the high-voltage line satisfies the normal power-on determination condition, the power-on indication relay is locked, and the power-on indication lamp indicates that the high-voltage line satisfies the normal power-on determination condition. The indication manner of the charged indicator light includes but is not limited to lighting or flashing.
The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.
Claims (7)
1. A high-voltage live display device capable of indicating induced voltage is characterized in that: the device comprises a signal isolation transmitting unit, a signal conditioning circuit unit, a main control processing unit, a safety voltage alarm output unit and a live output unit;
the input end of the signal isolation transmitting unit is externally connected with a voltage transformer, and the output end of the signal isolation transmitting unit is electrically connected with the input end of the signal conditioning circuit unit;
the output end of the signal conditioning circuit unit is electrically connected with the input end of the main control processing unit, the input end of the safety voltage alarm output unit, the input end of the electrified output unit and the output end of the main control processing unit are electrically connected, and the safety voltage alarm output unit executes an indication alarm action when the induction voltage value is higher than a preset safety voltage value.
2. The device for displaying high voltage electrification according to claim 1, wherein: the safety voltage alarm output unit comprises a safety locking relay circuit, the safety locking relay circuit comprises a safety indication relay and a switch tube Q1, a power supply and a collector electrode of a switch tube Q1 are electrically connected through the safety indication relay, a base electrode of the switch tube Q1 is electrically connected with an output end of the main control processing unit, and an emitting electrode of the switch tube Q1 is grounded.
3. The device for displaying high voltage electrification according to claim 1, wherein: safety voltage warning output unit still includes safety voltage indicator lamp circuit, safety voltage indicator lamp circuit includes safety indicator lamp L1 and switch tube Q2, safety indicator lamp L1's one end and switch tube Q2's collecting electrode electricity are connected, safety indicator lamp L1's the other end and power electricity are connected, switch tube Q2's base and main control processing unit's output electricity are connected, switch tube Q2's projecting pole ground connection.
4. The device for displaying high voltage electrification according to claim 1, wherein: the safe voltage alarm output unit further comprises a wireless communication circuit, and the input end of the wireless communication circuit is electrically connected with the output end of the main control processing unit.
5. The device for displaying high voltage electrification according to claim 1, wherein: the system also comprises an application parameter setting interface which is electrically connected with the input end of the main control processing unit.
6. The device for displaying high voltage electrification according to claim 1, wherein: the live output unit comprises a live indication relay which is locked when the live indication relay is normally electrified.
7. The device for displaying high voltage electrification according to claim 1, wherein: the live output unit further comprises a live indicating lamp, and the live indicating lamp indicates that the high-voltage line meets the state of the conventional live judgment condition.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921207243.7U CN210376499U (en) | 2019-07-26 | 2019-07-26 | High-voltage live display device capable of indicating induction voltage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921207243.7U CN210376499U (en) | 2019-07-26 | 2019-07-26 | High-voltage live display device capable of indicating induction voltage |
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| CN210376499U true CN210376499U (en) | 2020-04-21 |
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| CN201921207243.7U Active CN210376499U (en) | 2019-07-26 | 2019-07-26 | High-voltage live display device capable of indicating induction voltage |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111856107A (en) * | 2020-08-26 | 2020-10-30 | 云南易睿德电网工程技术有限公司 | A line induction voltage testing device |
| CN117054817A (en) * | 2023-08-30 | 2023-11-14 | 广州泰达创盈电气有限公司 | High-voltage isolation transmitting device and high-voltage isolation transmitting system |
-
2019
- 2019-07-26 CN CN201921207243.7U patent/CN210376499U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111856107A (en) * | 2020-08-26 | 2020-10-30 | 云南易睿德电网工程技术有限公司 | A line induction voltage testing device |
| CN117054817A (en) * | 2023-08-30 | 2023-11-14 | 广州泰达创盈电气有限公司 | High-voltage isolation transmitting device and high-voltage isolation transmitting system |
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