CN214843678U - 35kV grounding variable resistance cabinet temperature monitoring system - Google Patents
35kV grounding variable resistance cabinet temperature monitoring system Download PDFInfo
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- CN214843678U CN214843678U CN202120773440.6U CN202120773440U CN214843678U CN 214843678 U CN214843678 U CN 214843678U CN 202120773440 U CN202120773440 U CN 202120773440U CN 214843678 U CN214843678 U CN 214843678U
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Abstract
The utility model discloses a 35kV grounding resistance-variable cabinet temperature monitoring system, which comprises a grounding resistance-variable cabinet, a temperature measuring module, a temperature controller, a measurement and control device, a rear-end monitoring terminal and a communication manager; the communication manager is respectively connected with the measurement and control device and the background monitoring terminal; the output end of the temperature controller is connected with the measurement and control device, and the input end of the temperature controller is connected with the temperature measurement module; the temperature measurement module is respectively arranged at a neutral point and an iron core of the grounding variable resistance cabinet and respectively collects the neutral point zero sequence current and the iron core temperature of the grounding variable resistance cabinet; the temperature measuring module is a resistor cabinet body PT100 temperature measuring head; the measurement and control device is a DSA2116 protection measurement and control device and is installed on the grounding variable resistance cabinet. The utility model discloses increased zero sequence current temperature measurement supervisory equipment, improved the sensitivity and the reliability of ground connection varistor cabinet protection action, reached resistance card temperature running state in through real time monitoring resistance cabinet zero sequence current, the cabinet, ensured equipment operation safety.
Description
Technical Field
The utility model relates to a temperature monitoring technical field especially relates to a 35kV ground connection varistor cabinet temperature monitoring system.
Background
The 35kV grounding transformer substation is with becoming ground resistance complete sets, namely 35kV small resistance ground complete sets, is that we say at ordinary times the neutral point grounding resistance cabinet, and it installs between transformer neutral point or generator neutral point and ground, is the same to this international and domestic industry standard, and when grounding current is more than or equal to 3A, the neutral point is that generally to install the resistance cabinet additional, in order to play the protective action to main transformer or generator. The existing grounding variable resistance cabinet has the possibility that the abnormal condition that the temperature in the cabinet is increased or the temperature of a resistor disc iron core is too high due to overlarge zero-sequence current of a neutral point in the operation process, and inspection personnel cannot find the abnormal condition in time, so that safety accidents are easily caused.
For example, patent application No. CN201510930456.2 discloses a multifunctional monitoring device for a resistor cabinet, which includes a processor, a signal acquisition unit for acquiring working parameters of the resistor cabinet, a signal output unit for outputting monitoring data, a protection unit for automatically protecting the resistor cabinet according to the acquired working parameters, and a communication unit for data exchange of the resistor cabinet; this technical scheme's multi-functional monitoring device of resistance cabinet can detect and cabinet body environment regulation and control the various parameters of resistance cabinet, has realized automated management. Automatic control is reported to the police, trip and alarm signal and participates in the reserve protection to can be long-rangely to whole comprehensive control of resistance cabinet, guarantee the safe operation of system. Although the signal acquisition unit of the monitoring device can acquire temperature, humidity smoke, airflow, zero sequence voltage current and voltage current of single-phase ground current during ground fault, the monitoring device cannot acquire the temperature of a resistor disc iron core of a resistor cabinet, cannot display the real-time temperature in the cabinet on the resistor cabinet, and cannot prompt the corresponding electric cabinet to have abnormal temperature when the temperature is abnormal.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a 35kV ground connection varistor cabinet temperature monitoring system.
The purpose of the utility model is realized through the following technical scheme:
a temperature monitoring system of a 35kV grounding variable resistance cabinet comprises the grounding variable resistance cabinet, a temperature measuring module, a temperature control instrument, a measurement and control device, a rear-end monitoring terminal and a communication manager; the communication manager is respectively connected with the measurement and control device and the background monitoring terminal; the output end of the temperature controller is connected with the measurement and control device, and the input end of the temperature controller is connected with the temperature measurement module; the temperature measurement module is respectively arranged at the neutral point and the iron core of the grounding variable resistance cabinet and respectively collects the neutral point zero sequence current and the iron core temperature of the grounding variable resistance cabinet.
Optionally, the temperature measuring module is a resistance cabinet body PT100 temperature measuring head.
Optionally, the measurement and control device is a DSA2116 protection measurement and control device and is installed on the grounding variable resistance cabinet.
Optionally, the background monitoring terminal includes a background monitoring host and a large display screen, and an input end of the monitoring host is connected with the communication manager; the display large screen is connected with the output end of the monitoring host.
Optionally, the grounding transformer resistance cabinet also comprises an optical character board for displaying the neutral point zero sequence current temperature and the iron core temperature in the grounding transformer resistance cabinet in real time; the output end of the temperature controller is connected with the light character plate.
Optionally, the device further comprises an audible and visual alarm which is arranged on the grounding variable resistance cabinet, and the measurement and control device is connected with the audible and visual alarm.
The utility model has the advantages that: the utility model discloses increased zero sequence current temperature measurement supervisory equipment in ground connection varistor cabinet, improved sensitivity and the reliability of ground connection varistor cabinet protection action, through real time monitoring resistance cabinet zero sequence current, the interior resistance card temperature running state that reaches of cabinet, ensured equipment operation safety.
Drawings
Fig. 1 is a schematic block diagram of the apparatus of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
In this embodiment, as shown in fig. 1, a 35kV grounding resistance-changing cabinet temperature monitoring system includes a grounding resistance-changing cabinet, a temperature measuring module, a temperature controller, a measurement and control device, a rear-end monitoring terminal and a communication manager; the communication manager is respectively connected with the measurement and control device and the background monitoring terminal; the output end of the temperature controller is connected with the measurement and control device, and the input end of the temperature controller is connected with the temperature measurement module; the temperature measurement module is respectively arranged at the neutral point and the iron core of the grounding variable resistance cabinet and respectively collects the neutral point zero sequence current and the iron core temperature of the grounding variable resistance cabinet.
Wherein, the resistance card in the ground connection resistance-changing cabinet divide into 6 total resistance 340 omega, wherein 1-3 section: 173.2 omega, section 4: 58.1 omega, section 5: 58.7 omega, wherein section 6 has 3 taps of 45.4 omega, 51.4 omega, and 57.6 omega, respectively. Optionally, the temperature measuring module is a resistance cabinet body PT100 temperature measuring head.
Optionally, the measurement and control device is a DSA2116 protection measurement and control device, and is installed on the grounding transformer cabinet, the neutral point zero sequence current of the resistor cabinet is sent to the DSA2116 protection measurement and control device, the overtemperature alarm signal generated by the grounding transformer cabinet is sent to the DSA2116 protection measurement and control device, the overtemperature alarm signal of the resistor disc iron core of the grounding transformer cabinet is also connected to the DSA2116 protection measurement and control device, and the signal is transmitted to the background monitoring host computer through the DSA2116 protection measurement and control device and displayed.
Optionally, the background monitoring terminal includes a background monitoring host and a large display screen, and an input end of the monitoring host is connected with the communication manager; the display large screen is connected with the output end of the monitoring host. Background monitoring host computer mountable current power consumption monitoring software system does the utility model discloses a further improvement can increase ground connection change zero sequence current and ground connection change resistance cabinet temperature real-time value display function in the main wiring diagram boundary of background monitoring host computer system, makes things convenient for the monitoring of the operating personnel in the equipment operation.
Optionally, the grounding transformer cabinet also comprises an optical character board for displaying the zero sequence current temperature and the iron core temperature of the neutral point in the grounding transformer cabinet in real time; the output end of the temperature controller is connected with the light character plate. As the utility model discloses a further improvement can increase light word tablet and audible-visual annunciator on the ground connection varistor cabinet, can show the temperature and the zero sequence current temperature of the resistance card iron core in the ground connection varistor cabinet in real time, and the personnel of being convenient for patrol and examine keep watch on. When the temperature in the cabinet exceeds the temperature controller, the audible and visual alarm can give an alarm to remind the polling personnel to process in time.
The utility model discloses an in the embodiment, can set for zero sequence current transfinite warning and temperature transfinite definite value on the temperature controller, specifically include: the out-of-limit temperature of the resistance sheet is set to be 50 ℃, the zero sequence current out-of-limit temperature, namely the environmental temperature of the resistance cabinet is set to be 45 ℃, and meanwhile, the current out-of-limit alarm value of a DSA2116 protection measurement and control device of a 35kV grounding variable resistance cabinet of a transformer substation and the grounding variable zero sequence current out-of-limit alarm constant value of a background monitoring terminal are set to be 0.5A.
And if the 35kV system is in single-phase grounding or incomplete grounding and zero-sequence current exceeds the 0.5A override value set by the monitoring background, the background monitoring terminal pops up a corresponding fault bar and gives an alarm to ring.
When the environment temperature (zero sequence current temperature) in the grounding variable resistance cabinet and the temperature of the resistance card are increased to exceed set values by the flowing zero sequence current, the DSA2116 protection measurement and control device of the 35kV grounding variable resistance cabinet and the background monitoring terminal simultaneously report an overtemperature alarm signal.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A35 kV grounding variable resistance cabinet temperature monitoring system is characterized by comprising a grounding variable resistance cabinet, a temperature measuring module, a temperature controller, a measurement and control device, a rear-end monitoring terminal and a communication manager; the communication manager is respectively connected with the measurement and control device and the background monitoring terminal; the output end of the temperature controller is connected with the measurement and control device, and the input end of the temperature controller is connected with the temperature measurement module; the temperature measurement module is respectively arranged at the neutral point of the grounding variable resistance cabinet and the iron core of the resistance card and respectively collects the neutral point zero sequence current and the iron core temperature of the grounding variable resistance cabinet.
2. The 35kV grounding resistance-changing cabinet temperature monitoring system according to claim 1, wherein the temperature measuring module is a PT100 temperature measuring head of the resistance cabinet body.
3. The 35kV grounding variable resistance cabinet temperature monitoring system according to claim 1, wherein the measurement and control device is a DSA2116 protection measurement and control device and is installed on the grounding variable resistance cabinet.
4. The 35kV grounding resistance-changing cabinet temperature monitoring system according to claim 1, wherein the background monitoring terminal comprises a background monitoring host and a large display screen, and the input end of the monitoring host is connected with the communication manager; the display large screen is connected with the output end of the monitoring host.
5. The 35kV grounding resistance-changing cabinet temperature monitoring system according to claim 1, characterized by further comprising an optical character board for displaying the neutral zero-sequence current temperature and the iron core temperature in the grounding resistance-changing cabinet in real time; the output end of the temperature controller is connected with the light character plate.
6. The 35kV grounding resistance-changing cabinet temperature monitoring system according to claim 1, further comprising an audible and visual alarm arranged on the grounding resistance-changing cabinet, wherein the measurement and control device is connected with the audible and visual alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120773440.6U CN214843678U (en) | 2021-04-15 | 2021-04-15 | 35kV grounding variable resistance cabinet temperature monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120773440.6U CN214843678U (en) | 2021-04-15 | 2021-04-15 | 35kV grounding variable resistance cabinet temperature monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214843678U true CN214843678U (en) | 2021-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120773440.6U Active CN214843678U (en) | 2021-04-15 | 2021-04-15 | 35kV grounding variable resistance cabinet temperature monitoring system |
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| Country | Link |
|---|---|
| CN (1) | CN214843678U (en) |
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2021
- 2021-04-15 CN CN202120773440.6U patent/CN214843678U/en active Active
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