CN211086545U - N600 earth connection current monitoring devices - Google Patents
N600 earth connection current monitoring devices Download PDFInfo
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- CN211086545U CN211086545U CN201920880697.4U CN201920880697U CN211086545U CN 211086545 U CN211086545 U CN 211086545U CN 201920880697 U CN201920880697 U CN 201920880697U CN 211086545 U CN211086545 U CN 211086545U
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Abstract
The utility model discloses a N600 grounding wire current monitoring device, which comprises a current collector, a temperature and humidity collector, a display, a memory, a processor and an alarm; the acquisition end of the current acquisition device is used for acquiring the current of the N600 grounding wire, and the output end of the current acquisition device is connected with the processor so as to transmit the acquired current data to the processor; the acquisition end of the temperature and humidity acquisition device is used for acquiring temperature and humidity data on the periphery of the N600 grounding wire, and the output end of the temperature and humidity acquisition device is connected with the processor so as to transmit the acquired temperature and humidity data to the processor; the display is connected with the processor and used for displaying current data and temperature and humidity data; the memory is connected with the processor and used for storing current data and temperature and humidity data; the alarm is connected with the processor and used for receiving alarm information sent by the processor. The device can find whether the current value of the N600 grounding wire is larger than 50mA in time, and reduce the possibility of protection misoperation caused by multipoint grounding of the secondary circuit of the voltage transformer for protection.
Description
Technical Field
The utility model relates to a monitoring devices, concretely relates to N600 earth connection current monitoring devices.
Background
During the normal operation of the voltage transformer, the protection malfunction may be caused by multipoint grounding of the secondary circuit of the voltage transformer for protection. Therefore, in order to prevent the protection misoperation of 220kV and above caused by multipoint grounding of the secondary circuit of the voltage transformer for protection, the < southern power grid electric power system relay protection anti-accident measure 2014 edition > requires that each unit should check the grounding condition of the secondary circuit N600 of the voltage transformer of the station under the jurisdiction. The actual current value flowing through the N600 grounding wire is required to be measured by a clamp type ammeter (with the accuracy of mA level) under the condition of clear weather. If the current flowing on the N600 grounding wire is found to be more than 50mA, the secondary circuit of the voltage transformer and the grounding condition thereof are immediately and comprehensively checked to ensure that only one point is grounded.
At the present stage, the station in operation requires that the operator on duty should test the current value of the N600 grounding wire once every half year, and make a corresponding data record. However, in the actual operation process of the voltage transformer, once measurement of the current value of the N600 grounding wire in half a year may cause the current value of the N600 grounding wire to exceed 50mA but not be found in the operation process of the voltage transformer, and if the secondary circuit of the voltage transformer for protection is already grounded in multiple points, protection misoperation is easily caused
Disclosure of Invention
An object of the utility model is to overcome above-mentioned prior art not enough, provide a N600 earth connection current monitoring devices, discover in time whether N600 earth connection current value is greater than 50mA, reduce because of the protection arouses the possibility of protection maloperation with voltage transformer secondary circuit multiple spot ground connection
In order to achieve the above purpose, the technical scheme of the utility model is that:
a N600 grounding wire current monitoring device comprises a current collector, a temperature and humidity collector, a display, a memory, a processor and an alarm; wherein the content of the first and second substances,
the acquisition end of the current acquisition device is used for acquiring the current of the N600 grounding wire, and the output end of the current acquisition device is connected with the processor so as to transmit the acquired current data to the processor;
the acquisition end of the temperature and humidity acquisition device is used for acquiring temperature and humidity data on the periphery of the N600 grounding wire, and the output end of the temperature and humidity acquisition device is connected with the processor so as to transmit the acquired temperature and humidity data to the processor;
the display is connected with the processor and used for displaying current data and temperature and humidity data;
the memory is connected with the processor and used for storing current data and temperature and humidity data;
the alarm is connected with the processor and used for receiving alarm information sent by the processor.
The N600 grounding wire current monitoring device further comprises a wireless communication module, wherein the wireless communication module is connected with the processor and used for sending alarm information sent by the processor to a receiving terminal.
The N600 grounding wire current monitoring device further comprises a power supply, and the power supply adopts 220V alternating current to supply power to the device uninterruptedly.
The wireless communication module is a GSM wireless communication module.
The display is an L CD display.
Compared with the prior art, the utility model, its beneficial effect lies in:
this N600 earth connection current monitoring devices can regularly save electric current size, the weather condition of the same day, humiture condition to can derive the historical data of storage, combine together and carry out scientific analysis. Meanwhile, the device can display the N600 grounding current in real time, and can send an alarm short message to an operator when the current value of the N600 grounding wire is larger than 50mA, thereby reducing the waste of human resources, greatly avoiding the situation that the current value of the N600 grounding wire exceeds 50mA but is not found in the operation process of the voltage transformer, timely notifying a protection person to carry out special inspection when alarming occurs, and reducing the possibility of protection misoperation caused by multi-point grounding of a secondary circuit of the voltage transformer for protection.
Drawings
Fig. 1 is a schematic diagram illustrating a current monitoring device for an N600 ground line provided in this embodiment;
in the figure: 1. a current collector; 2. a temperature and humidity collector; 3. a display; 4. a memory; 5. a processor; 6. an alarm; 7. a wireless communication module; 8. a power source.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Example (b):
referring to fig. 1, the N600 ground line current monitoring device provided in this embodiment includes a current collector 1, a temperature and humidity collector 2, a display 3, a memory 4, a processor 5, and an alarm 6.
The acquisition end of the current acquisition device 1 is used for acquiring the current of the N600 grounding wire, and the output end is connected with the processor 5 so as to transmit the acquired current data to the processor 5 and compare the acquired current data with a preset current value of 50mA of the processor 5.
The collecting end of the temperature and humidity collector 2 is used for collecting temperature and humidity data around the N600 grounding wire, the output end of the temperature and humidity collector is connected with the processor 5, the collected temperature and humidity data are transmitted to the processor 5 and are compared with temperature and humidity values preset by the processor 5, whether the weather condition of the position of the N600 grounding wire belongs to the clear weather condition or not is judged, if the weather of the position of the N600 grounding wire is clear and the current value collected by the current collector is larger than 50mA, the processor can send alarm information to the alarm 6, the alarm 6 sends the alarm information to remind operation and maintenance protection personnel of carrying out special inspection, and the possibility of protection misoperation caused by multi-point grounding of a secondary circuit of a voltage transformer for protection is reduced.
The display 3 is connected with the processor 5 and is used for displaying current data and temperature and humidity data. So, when transformer substation operation and maintenance personnel patrolled and examined, can know N600 earth wire current value, weather conditions and humiture condition directly perceivedly. The memory 4 is also connected with the processor 5 and is used for storing and recording current data and temperature and humidity data; in this way, the collected data can be recorded, and the collected data can be scientifically analyzed by deriving the recorded data.
Preferably, in this embodiment, the N600 ground line current monitoring device further includes a wireless communication module 7, where the wireless communication module 7 is connected to the processor 5, and is configured to send the alarm information sent by the processor to the receiving terminal. That is to say, when the weather at the location of the N600 ground wire is clear and the current value acquired by the current collector is greater than 50mA, the processor 5 sends the alarm information to the mobile phone of the substation operation and maintenance personnel synchronously through the wireless communication module 7 to remind the operation and maintenance personnel to perform the inspection and processing. Therefore, the condition that the current value of the N600 grounding wire exceeds 50mA but is not found in the operation process of the voltage transformer can be greatly avoided, and when an alarm occurs, a protection person is timely informed to carry out special inspection, so that the possibility of protection misoperation caused by multipoint grounding of a secondary circuit of the voltage transformer for protection is reduced.
Specifically, the wireless communication module 7 is a GSM wireless communication module, the display 3 is an L CD display, the processor 5 is a single chip, the current collector 1, the temperature and humidity collector 2, and the memory 4 are conventional elements in the field, and the specific structure and the working principle thereof are not described in detail in this embodiment.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (1)
1. A current monitoring device for an N600 grounding wire is characterized by comprising a current collector, a temperature and humidity collector, a display, a memory, a processor and an alarm; wherein the content of the first and second substances,
the acquisition end of the current acquisition device is used for acquiring the current of the N600 grounding wire, and the output end of the current acquisition device is connected with the processor so as to transmit the acquired current data to the processor;
the acquisition end of the temperature and humidity acquisition device is used for acquiring temperature and humidity data on the periphery of the N600 grounding wire, and the output end of the temperature and humidity acquisition device is connected with the processor so as to transmit the acquired temperature and humidity data to the processor;
the display is connected with the processor and used for displaying current data and temperature and humidity data;
the memory is connected with the processor and used for storing current data and temperature and humidity data;
the alarm is connected with the processor and used for receiving alarm information sent by the processor;
the wireless communication module is connected with the processor and used for sending alarm information sent by the processor to the receiving terminal;
the device also comprises a power supply, wherein the power supply adopts 220V alternating current to supply power to the device uninterruptedly;
the wireless communication module is a GSM wireless communication module;
the display is an L CD display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920880697.4U CN211086545U (en) | 2019-06-12 | 2019-06-12 | N600 earth connection current monitoring devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920880697.4U CN211086545U (en) | 2019-06-12 | 2019-06-12 | N600 earth connection current monitoring devices |
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| CN211086545U true CN211086545U (en) | 2020-07-24 |
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| CN201920880697.4U Active CN211086545U (en) | 2019-06-12 | 2019-06-12 | N600 earth connection current monitoring devices |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112162212A (en) * | 2020-08-17 | 2021-01-01 | 广东电网有限责任公司 | N600 multipoint grounding real-time early warning device and system of PT secondary circuit |
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2019
- 2019-06-12 CN CN201920880697.4U patent/CN211086545U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112162212A (en) * | 2020-08-17 | 2021-01-01 | 广东电网有限责任公司 | N600 multipoint grounding real-time early warning device and system of PT secondary circuit |
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