CN214539781U - Intelligent discharging counting system for running state of passive remote transmission lightning arrester for transformer substation - Google Patents
Intelligent discharging counting system for running state of passive remote transmission lightning arrester for transformer substation Download PDFInfo
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- CN214539781U CN214539781U CN202120198600.9U CN202120198600U CN214539781U CN 214539781 U CN214539781 U CN 214539781U CN 202120198600 U CN202120198600 U CN 202120198600U CN 214539781 U CN214539781 U CN 214539781U
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Abstract
The utility model discloses a passive teletransmission arrester running state intelligence count system that discharges for transformer substation, a serial communication port, including electric power transmission and transformation center, with the transformer substation in each high-voltage bus be connected the arrester and install in every the discharge counter between the bottom of arrester and the ground terminal, the discharge counter includes time counter, action number of times counter, leakage current counter, main control unit and wireless radio frequency communication unit, main control unit respectively with action number of times counter, time counter and wireless radio frequency communication unit are connected, the arrester is connected with action number of times counter, leakage current counter is connected between action number of times counter and main control unit, the discharge counter carries out wireless communication through wireless radio frequency communication unit and electric power transmission and transformation center; the utility model discloses can go up the discharge number of times and the leakage current of arrester on the real time monitoring high-pressure primary equipment, have advantages such as long service life.
Description
Technical Field
The utility model relates to an arrester technical field, especially a transformer substation is with passive teletransmission arrester running state intelligence counting system that discharges.
Background
The most common monitoring means for the lightning arresters in the transformer substation and the switch cabinet is to use a traditional electromechanical lightning arrester discharge counter installed at the root of a zinc oxide lightning arrester (MOA), the traditional electromechanical lightning arrester discharge counter can read the magnitude of leakage current through the swinging of a pointer, the number of lightning stroke actions of the lightning arrester is read through the rotation of a digital meter, but the discharge counting data of the electromechanical lightning arrester cannot be transmitted in real time, the leakage current and the number of the actions of the MOA can only be recorded through manual operation and maintenance personnel or a handheld terminal, the safety coefficient is low, heavy operation and maintenance work tasks are brought to the operation and maintenance personnel, the residual voltage of the traditional electromechanical lightning arrester discharge counter is high, the safety coefficient is further reduced when the traditional electromechanical lightning arrester discharge counter is matched with the lightning arrester, the application range of the traditional lightning arrester is narrow, and the traditional electromechanical lightning arrester discharge counter is easy to generate breakdown short circuit or explosion phenomenon (most of the traditional lightning arrester is explosion phenomenon) when the lightning current exceeding the self bearing capacity and the quality problem are caused during operation, the arrester can not work normally, thereby losing the protection function of the electric appliances on the line and other defects.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model aims to provide an intelligent discharge counting system for the running state of a passive remote transmission arrester for a transformer substation; the utility model discloses can go up the discharge number of times and the leakage current of arrester on the real time monitoring high-pressure primary equipment, have advantages such as long service life.
In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a passive teletransmission arrester running state intelligence counting system that discharges for transformer substation, includes electric power transmission and transformation center, with each high-voltage bus connection's in the transformer substation arrester and install in every the counter that discharges between the bottom of arrester and the ground terminal, the counter that discharges includes time counter, action number of times counter, leakage current counter, main control unit and wireless radio frequency communication unit, main control unit respectively with action number of times counter, time counter and wireless radio frequency communication unit connect, the arrester with action number of times counter is connected, leakage current counter connect in between action number of times counter and the main control unit, the counter that discharges passes through wireless radio frequency communication unit with electric power transmission and transformation center carries out wireless communication.
In a preferred embodiment, the time counter is a GPS time unit.
In another preferred embodiment, the operation number counter counts 0 to 9999 times, and the leakage current counter records 000.000 to 999.999 mA.
As another preferred embodiment, the action number counter includes a rogowski coil, a first resistor, a second resistor, and a photoelectric coupler, the rogowski coil is sleeved on the lightning discharging conductor of the lightning arrester, a current output end of the rogowski coil is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the second resistor, the other end of the second resistor is connected to an anode of a light emitting diode of the photoelectric coupler, a cathode of the light emitting diode is connected to a current input end of the rogowski coil, two ends of the second resistor are connected in parallel to a capacitor, and an electrical signal output end of a light receiver of the photoelectric coupler is connected to the main control unit.
As another preferred embodiment, the power supply further comprises two transient diodes connected in series in an inverted manner, wherein the anode of one transient diode is connected with the current output end of the rogowski coil, and the anode of the other transient diode is connected with the current input end of the rogowski coil.
The utility model has the advantages that:
1. the utility model discloses a real-time communication of wireless radio frequency communication unit and electric power transmission and transformation center of discharge counter can realize 35kV in the transformer substation and the online perception of the leakage current of above arrester, action number of times and time, through to every group MOA arrester real-time supervision, thoroughly solves fortune dimension personnel and carries out loaded down with trivial details to the scene every day and copy to can accurate in time master the health status of operational equipment, alleviateed fortune dimension staff's fortune dimension task.
2. The system works in a wireless radio frequency communication mode, wiring on site is not needed, the reliability and the practicability of the system are greatly improved, and meanwhile, the system is easy to install, debug and operate and maintain on site.
3. The utility model has the technical effects of simple circuit structure, strong environmental interference resistance, long service life and accurate lightning frequency counting, thereby improving the effectiveness and reliability of the lightning frequency counting; the surge protection capability of the lightning counter is improved by connecting two transient diodes which are connected in series in an inverted manner in parallel at the current output end and the current input end of the Rogowski coil, and the first resistor, the second resistor, the capacitor and the photoelectric coupler are protected, so that the service life of the lightning counter is further prolonged; and a photoelectric coupler is adopted, so that the manufacturing and maintenance cost of the lightning counter is further reduced.
Drawings
Fig. 1 is a block diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a circuit connection according to an embodiment of the present invention;
fig. 3 is a schematic circuit diagram of an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Examples
As shown in fig. 1 and 2, an intelligent discharge counting system for the operation state of a passive remote-transmission lightning arrester for a transformer substation comprises a power transmission and transformation center, a lightning arrester connected with each high-voltage bus in the transformer substation, and a discharge counter installed between the bottom of each lightning arrester and a grounding terminal, the discharge counter comprises a time counter, an action frequency counter, a leakage current counter, a main control unit and a wireless radio frequency communication unit, the main control unit is respectively connected with the action frequency counter, the time counter and the wireless radio frequency communication unit, the lightning arrester is connected with the action frequency counter, the leakage current counter is connected between the action frequency counter and the main control unit, and the discharge counter is in wireless communication with the electric power transmission and transformation center through the wireless radio frequency communication unit.
In this embodiment, the time counter is a GPS time unit.
In the present embodiment, the operation number counter has a count range of 0 to 9999 times, and the leakage current counter has a recording range of 000.000 to 999.999 mA.
As shown in fig. 3, in the present embodiment, the operation number counter includes a rogowski coil L1, a first resistor R1, a second resistor R2, and a photocoupler Q1, the rogowski coil L1 is sleeved on a lightning discharging conductor of the lightning arrester, a current output end of the rogowski coil L1 is connected to one end of the first resistor R1, the other end of the first resistor R1 is connected to one end of the second resistor R2, the other end of the second resistor R2 is connected to an anode of a light emitting diode D1 of the photocoupler Q1, a cathode of the light emitting diode D1 is connected to a current input end of the rogowski coil L1, two ends of the second resistor R2 are connected in parallel to a capacitor C1, and an electrical signal output end of a light receiving device of the photocoupler Q1 is connected to the main control unit.
In this embodiment, the current regulator further includes two transient diodes D2 and D3 connected in series in an inverted manner, wherein an anode of one transient diode D2 is connected to the current output terminal of the rogowski coil L1, and an anode of the other transient diode D3 is connected to the current input terminal of the rogowski coil L1.
The principle of this embodiment is further explained below:
when lightning voltage or operation overvoltage passes through the lightning arrester, the discharge counter is triggered to work, the leakage current counter is connected with the action frequency counter, partial direct current signals flowing through the action frequency counter are led out, the main control unit obtains counting information of the action frequency counter and the leakage current counter, meanwhile, action time of the lightning arrester is obtained through the time counter, and then wireless communication between the wireless radio frequency communication unit and the power transmission and transformation center is carried out, operation conditions of the MOA lightning arrester connected to each high-voltage bus of the transformer substation are monitored in real time, and operation and maintenance tasks of operation and maintenance workers are reduced.
The operation principle of the operation number counter of the present embodiment is as follows:
when lightning occurs and the lightning is discharged from the lightning discharging lead, the Rogowski coil L1 sleeved on the lightning discharging lead generates and outputs pulse induction current, the pulse induction current output by the Rogowski coil L1 flows through the first resistor R1, the voltage and the current of the pulse induction current are reduced to be within the working voltage range of the light emitting diode D1, when the pulse induction current flows through the integrating circuit formed by connecting the second resistor R2 and the capacitor C1 in parallel, the capacitor C1 is charged, and the capacitor C1 is discharged, the waveform of the rectangular pulse induction current is converted into parabolic current, so that the time length of the subsequent current passing through the photoelectric coupler is prolonged, when the current flows through the light emitting diode D1 of the photoelectric coupler Q1, the light emitting diode D1 converts electric energy into light energy, and the light receiver of the photoelectric coupler generates pulse current after receiving the light emitted by the light emitting diode D1 and transmits the pulse current to the main control unit, the main control unit obtains the times of induced current generated by the Rogowski coil L1 according to the pulse current, thereby achieving the purpose of counting.
The transient diodes D2 and D3 can improve the surge protection capability of the lightning frequency counter, and protect the first resistor R, the second resistor R2, the capacitor C1 and the photoelectric coupler Q1, so that the service life of the lightning frequency counter is further prolonged.
The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.
Claims (5)
1. An intelligent discharge counting system for the running state of a passive remote transmission arrester for a transformer substation is characterized by comprising an electric power transmission and transformation center, arresters connected with each high-voltage bus in the transformer substation, and discharge counters arranged between the bottom of each arrester and a grounding terminal, the discharge counter comprises a time counter, an action frequency counter, a leakage current counter, a main control unit and a wireless radio frequency communication unit, the main control unit is respectively connected with the action frequency counter, the time counter and the wireless radio frequency communication unit, the lightning arrester is connected with the action frequency counter, the leakage current counter is connected between the action frequency counter and the main control unit, and the discharge counter is in wireless communication with the electric power transmission and transformation center through the wireless radio frequency communication unit.
2. The intelligent discharging and counting system for the running state of the passive remote lightning arrester for the substation according to claim 1, characterized in that the time counter is a GPS time unit.
3. The intelligent discharging counting system for the running state of the passive remote lightning arrester of the substation as claimed in claim 1, wherein the action number counter is in a counting range of 0-9999 times, and the leakage current counter is in a recording range of 000.000-999.999 mA.
4. The intelligent discharging and counting system for the running state of the passive remote lightning arrester of the transformer substation according to claim 1, wherein the action frequency counter comprises a rogowski coil, a first resistor, a second resistor and a photoelectric coupler, the rogowski coil is sleeved on a lightning discharging wire of the lightning arrester, a current output end of the rogowski coil is connected with one end of the first resistor, the other end of the first resistor is connected with one end of the second resistor, the other end of the second resistor is connected with an anode of a light emitting diode of the photoelectric coupler, a cathode of the light emitting diode is connected with a current input end of the rogowski coil, two ends of the second resistor are connected in parallel with a capacitor, and an electric signal output end of a light receiver of the photoelectric coupler is connected with the main control unit.
5. The intelligent discharging and counting system for the operation state of the passive remote lightning arrester of the transformer substation according to claim 4, characterized by further comprising two transient diodes connected in series in an inverted manner, wherein the anode of one transient diode is connected with the current output end of the Rogowski coil, and the anode of the other transient diode is connected with the current input end of the Rogowski coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120198600.9U CN214539781U (en) | 2021-01-25 | 2021-01-25 | Intelligent discharging counting system for running state of passive remote transmission lightning arrester for transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120198600.9U CN214539781U (en) | 2021-01-25 | 2021-01-25 | Intelligent discharging counting system for running state of passive remote transmission lightning arrester for transformer substation |
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| Publication Number | Publication Date |
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| CN214539781U true CN214539781U (en) | 2021-10-29 |
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| CN202120198600.9U Active CN214539781U (en) | 2021-01-25 | 2021-01-25 | Intelligent discharging counting system for running state of passive remote transmission lightning arrester for transformer substation |
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| CN (1) | CN214539781U (en) |
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2021
- 2021-01-25 CN CN202120198600.9U patent/CN214539781U/en active Active
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