CN211603346U - On-line monitoring system for grounding resistance of transformer substation grounding transformer system - Google Patents
On-line monitoring system for grounding resistance of transformer substation grounding transformer system Download PDFInfo
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- CN211603346U CN211603346U CN201922328684.9U CN201922328684U CN211603346U CN 211603346 U CN211603346 U CN 211603346U CN 201922328684 U CN201922328684 U CN 201922328684U CN 211603346 U CN211603346 U CN 211603346U
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Abstract
The utility model belongs to the technical field of ground resistance detects and uses, specifically disclose transformer substation's ground connection becomes system ground resistance on-line monitoring system, including the detector, and the signal line of being connected with the detector respectively, power cord, communication line, 12V power, PC end, and the auxiliary measurement collection terminal of being connected with signal line, power cord respectively, and pre-buried a plurality of is surveyed the grounding body, wherein, auxiliary measurement collection terminal and a plurality of are surveyed and are connected through the wire between the grounding body, and the detector contains the display screen and shows the measured resistance value. The utility model discloses a transformer substation's ground connection becomes system ground resistance on-line monitoring system's beneficial effect lies in: 1. the structure is reasonable in design, small in volume, light in weight and convenient to mount, dismount and maintain; 2. the grounding resistance value can be monitored in real time for a long time, and the workload of measuring the resistance is simplified; 3. and can be in communication connection with other monitoring platforms.
Description
Technical Field
The utility model belongs to the technical field of ground resistance detects, concretely relates to grounding of transformer substation becomes system ground resistance on-line monitoring system.
Background
The thunder and lightning disaster is listed as one of the most serious ten natural disasters by the department of the United nations, and becomes a public nuisance in the electronic era by the committee of China. How to reduce or avoid damages of lightning to human bodies, properties and the like is a problem of important consideration in the current society. One of the most important measures for grounding is among many protective measures. Before the thunderstorm season comes every year, the grounding equipment needs to be regularly and comprehensively detected and maintained, the grounding resistance measurement is the key point of maintenance, and the current grounding megger is a main measuring tool.
The existing grounding megger for measuring grounding resistance needs to lay two sets of grounding rods with auxiliary properties during measurement, one set is used for measuring the voltage between a grounding device to be measured and a zero potential point, and the other set is provided with a current loop which is used for forming the grounding device to be measured and is called as an auxiliary grounding body. Meanwhile, in order to reduce the measurement error, the down lead is required to be disconnected with the protected object when the grounding resistance of the grounding point is measured, and the device has the advantages of durability, convenience and simplicity, and has the defects of large measurement workload and large error in use in some occasions. For example: when the earth surface around the grounding point is the cement ground, the auxiliary electrode cannot be laid, the working contact of the transformer is protected and grounded by the shell of the motor, and the grounding resistance can not be measured because the equipment is not allowed to be disconnected.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model aims at providing a grounding resistance on-line monitoring system of transformer substation grounding transformer system, solve the problem that the existing grounding megger has low precision and large workload, improve the measurement precision, simplify the maintenance work of the grounding resistance, and monitor the grounding resistance value in real time; the problem that the error is large in certain occasions is solved.
The technical scheme is as follows: the utility model provides a grounding resistance on-line monitoring system of transformer substation's ground connection becomes system, including the detector, and the signal line, power cord, communication line, 12V power, the PC end of being connected with the detector respectively, and the auxiliary measurement collection terminal of being connected with signal line, power cord respectively, and pre-buried a plurality of is surveyed the grounding body, and wherein, auxiliary measurement collection terminal and a plurality of are surveyed and are connected through the wire between the grounding body, and the detector contains the display screen and shows the measured resistance value.
According to the technical scheme, the model of the auxiliary measurement acquisition terminal is PCRT 18; the model of the detector is XHDJ705BW or RL 00000196.
Compared with the prior art, the utility model discloses a grounding resistance on-line monitoring system of transformer substation's ground connection becomes system's beneficial effect lies in: 1. the structure is reasonable in design, small in volume, light in weight and convenient to mount, dismount and maintain; 2. The grounding resistance value can be monitored in real time for a long time, and the workload of measuring the resistance is simplified; 3. and can be in communication connection with other monitoring platforms.
Drawings
Fig. 1 is a schematic view of the working state structure of the grounding resistance on-line monitoring system of the transformer substation grounding transformer system of the present invention;
fig. 2 is the utility model discloses a transformer substation ground becomes system ground resistance on-line monitoring system's detector schematic diagram.
Detailed Description
The invention will be further elucidated with reference to the drawings and the specific embodiments.
Examples
The grounding resistance on-line monitoring system of the transformer substation grounding transformer system shown in fig. 1 and fig. 2 comprises a detector 1, a signal line 2, a power line 4, a communication line 5, a 12V power supply 7, a PC end 6, auxiliary measurement acquisition terminals 8 respectively connected with the signal line 2 and the power line 4, and a plurality of pre-buried grounding bodies 3 to be measured, wherein the auxiliary measurement acquisition terminals 8 (voltage and current transformers) are connected with the plurality of grounding bodies 3 to be measured through leads 9, and the detector 1 comprises a display screen for displaying measured resistance values.
Further preferably, the model of the auxiliary measurement acquisition terminal 8 is PCRT 18; the model of the detector 1 is XHDJ705BW or RL 00000196.
According to the grounding resistance on-line monitoring system of the transformer substation grounding transformer system, an alternating voltage signal is generated by an instrument, a current signal is generated in a closed loop through electromagnetic induction, and the grounding resistance is obtained by utilizing the ohm law of the loop.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.
Claims (2)
1. The transformer substation grounding becomes system ground resistance on-line monitoring system which characterized in that: including detector (1), and signal line (2) be connected with detector (1) respectively, power cord (4), communication line (5), 12V power (7), PC end (6), and respectively with signal line (2), auxiliary measurement collection terminal (8) that power cord (4) are connected, and a plurality of pre-buried quilt surveys grounding body (3), wherein, auxiliary measurement collection terminal (8) are connected through wire (9) between being surveyed grounding body (3) with a plurality of, detector (1) contains the display screen and shows the measured resistance value.
2. The substation grounding transformer system grounding resistance on-line monitoring system of claim 1, characterized in that: the model of the auxiliary measurement acquisition terminal (8) is PCRT 18; the model of the detector (1) is XHDJ705BW or RL 00000196.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922328684.9U CN211603346U (en) | 2019-12-23 | 2019-12-23 | On-line monitoring system for grounding resistance of transformer substation grounding transformer system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922328684.9U CN211603346U (en) | 2019-12-23 | 2019-12-23 | On-line monitoring system for grounding resistance of transformer substation grounding transformer system |
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| Publication Number | Publication Date |
|---|---|
| CN211603346U true CN211603346U (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922328684.9U Active CN211603346U (en) | 2019-12-23 | 2019-12-23 | On-line monitoring system for grounding resistance of transformer substation grounding transformer system |
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| CN (1) | CN211603346U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113295910A (en) * | 2021-05-14 | 2021-08-24 | 马鞍山电力规划勘察设计院有限责任公司 | Split type clamp type current transformer and transformer substation line surveying and mapping method |
| CN114069332A (en) * | 2021-11-15 | 2022-02-18 | 上海交通大学 | Independent grounding system suitable for electrophysiological equipment |
-
2019
- 2019-12-23 CN CN201922328684.9U patent/CN211603346U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113295910A (en) * | 2021-05-14 | 2021-08-24 | 马鞍山电力规划勘察设计院有限责任公司 | Split type clamp type current transformer and transformer substation line surveying and mapping method |
| CN113295910B (en) * | 2021-05-14 | 2022-06-03 | 国网安徽省电力有限公司马鞍山供电公司 | Split type clamp type current transformer and transformer substation line surveying and mapping method |
| CN114069332A (en) * | 2021-11-15 | 2022-02-18 | 上海交通大学 | Independent grounding system suitable for electrophysiological equipment |
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