CN214707144U - Over-under voltage monitoring protection control device - Google Patents
Over-under voltage monitoring protection control device Download PDFInfo
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- CN214707144U CN214707144U CN202120756352.5U CN202120756352U CN214707144U CN 214707144 U CN214707144 U CN 214707144U CN 202120756352 U CN202120756352 U CN 202120756352U CN 214707144 U CN214707144 U CN 214707144U
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Abstract
The utility model discloses an it keeps watch on protection controlling means to cross undervoltage, pass the return circuit on voltage sampling return circuit, voltage status return circuit, signal, voltage sampling return circuit is used for carrying out voltage sampling and gives the voltage status return circuit for, and voltage status return circuit carries out the analysis and gives the return circuit on the signal to the voltage sampling signal that voltage sampling return circuit transmission comes, and the return circuit of passing on the signal is with voltage status upload, the utility model discloses have the collection voltage signal, can monitor system voltage status to upload voltage status function, improve the reliability and the stability of system operation.
Description
Technical Field
The utility model belongs to the technical field of low-voltage switchgear voltage monitoring protection equipment, especially, relate to an it keeps watch on protection controlling means to cross undervoltage.
Background
The voltage stability is a parameter index of stable operation of the power system, and is beneficial to stable operation of equipment. Most of low-voltage switch cabinets under the condition are not provided with an over-undervoltage monitoring protection control loop, the voltage condition is not favorably monitored, and certain influence is caused on the service performance and the working efficiency of equipment.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to improve prior art's not enough and provide one kind and have gather voltage signal, can monitor system voltage state and upload voltage state function, improve the reliability and the stable mistake undervoltage monitoring protection controlling means of system operation.
The utility model aims at realizing like this, a cross undervoltage and keep watch on protection controlling means, its characteristics are including voltage sampling return circuit, voltage status return circuit, signal upload return circuit, and voltage sampling return circuit is used for carrying out the voltage sampling and gives the voltage status return circuit for, and the voltage status return circuit carries out the analysis and transmits the return circuit for the signal upload to the voltage sampling signal that voltage sampling return circuit transmission comes, and the return circuit of uploading voltage status is carried out to the signal upload return circuit.
In order to further realize the utility model discloses the purpose, can be voltage sampling return circuit in voltage transformer TVa, TVb, TVc's n end parallel connection and ground connection, voltage transformer TVa's a termination auxiliary relay 6K's 5 ends, voltage transformer TVb's a termination auxiliary relay 6K's 6 ends, voltage transformer TVc's a termination auxiliary relay 6K's 7 ends, auxiliary relay 6K's 9 termination voltage relay 1 KV's 5, 6 ends, 3 KV's 5, 6 ends parallel connection end, auxiliary relay 6K's 10 termination voltage relay 1 KV's 7, 8 ends and 2 KV's 5, 6 ends's common terminal, auxiliary relay 6K's 11 termination voltage relay 2 KV's 7, 8 ends and 3 KV's 7, 8 ends parallel connection end.
In order to further realize the utility model discloses the purpose, can be voltage status return circuit in the anodal L + of power connect miniature circuit breaker DK3 end 3, miniature circuit breaker's 4 termination sword fuse switch QSA's 13 ends, voltage relay 1 KV's 1 end, voltage relay 2 KV's 1 end, voltage relay 3 KV's 1 end, time relay 1's 1 end, time relay 2 KT's 1 end parallel connection end, sword fuse switch QSA's 14 termination auxiliary relay 3K's 14 end, auxiliary relay 6K's 14 end, voltage relay 1 KV's 3 end, voltage relay 2 KV's 3 end, voltage relay 3 KV's 3 end, auxiliary relay 7K's 1 end parallel connection end, voltage relay 1 KV's 4 termination voltage relay 2 KV's 4 end, voltage relay 3 KV's 4 end, auxiliary relay 4K's 1 end, auxiliary relay 7K's 6 end, auxiliary relay 8K's 6 end, intermediate relay 8K's 6 end, A 6-end common end of an intermediate relay 9K, a 9-end common end of the intermediate relay 4K, a 7-end parallel end of a time relay 1KT, a 7-end parallel end of a time relay 2KT, a 10-end of the intermediate relay 7K, a 10-end of the intermediate relay 8K and a 10-end parallel end of the intermediate relay 9K are connected with a 14-end of the intermediate relay 4K, a 9-end of the intermediate relay 7K is connected with a 1-end of the intermediate relay 8K, a 9-end of the intermediate relay 8K is connected with a 1-end of the intermediate relay 9K, a 9-end of the intermediate relay 9K is connected with a 14-end of the intermediate relay 5K, a 2-end of a voltage relay 1KV is connected with a 14-end of the intermediate relay 7K, a 2-end of the voltage relay 2KV is connected with a 14-end of the intermediate relay 8K, a 2-end of the voltage relay 3KV is connected with a 14-end of the intermediate relay 9K, and a 3-end of the time relay 1KT is connected with a 14-end of the intermediate relay KA11, The 14 end of the intermediate relay KA21 and the 14 end of the intermediate relay KA31 are connected in parallel, the 3 end of the time relay 2KT is connected with the 14 end of the intermediate relay KA41, the 13 end of the intermediate relay 3K, the 13 end of the intermediate relay 6K, the 2 end of the time relay 1KT, the 2 end of the time relay 2KT, the 13 end of the intermediate relay 4K, the 13 end of the intermediate relay 5K, the 13 end of the intermediate relay 7K, the 13 end of the intermediate relay 8K, the 13 end of the intermediate relay 9K, the 13 end of the intermediate relay KA11, the 13 end of the intermediate relay KA21, the 13 end of the intermediate relay KA31 and the 13 end of the intermediate relay KA41 are connected in parallel to the 2 end of the miniature circuit breaker DK3, and the 1 power supply cathode L-of the miniature circuit breaker 3 is connected to the 2 end of the miniature circuit breaker DK 3.
In order to further realize the utility model discloses the purpose, can be signal go up return route auxiliary relay KA11, KA21, KA31, KA41, 5K's auxiliary point constitute respectively.
Compared with the prior art, the utility model has the following characteristics of showing and positive effect: the utility model discloses a voltage sampling return circuit, the voltage state return circuit, the protection control return circuit that the signal uploaded the return circuit and constitute, by sword fuse switch QSA, voltage transformer TVa ~ TVc, voltage relay 1~3KV, miniature circuit breaker DK3, auxiliary relay 3 ~ 9K, KA11, KA21, KA31, KA41, time relay 1, 2KT is constituteed, voltage KT sampling return circuit carries out voltage sampling, the voltage state return circuit carries out the analysis to system voltage state, the signal uploads the return circuit and uploads voltage state. The utility model discloses have and gather voltage signal, can the monitoring system voltage state to upload the voltage state function, improve the reliability and the stability of system operation.
Drawings
Fig. 1 is a conventional primary main wiring diagram.
Fig. 2 is a block diagram of the present invention.
Fig. 3 is a circuit diagram of the voltage sampling circuit of the present invention.
Fig. 4 is a circuit diagram of the voltage status loop of the present invention.
Fig. 5 is a circuit diagram of the signal uploading loop of the present invention.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
The utility model provides an under-voltage monitoring protection controlling means, refers to fig. 2, and including voltage sampling return circuit, voltage state return circuit, signal upload return circuit, voltage sampling return circuit is used for carrying out the voltage sampling and transmits for the voltage state return circuit, and voltage state return circuit carries out the analysis and transmits for the signal upload return circuit to the voltage sampling signal that voltage sampling return circuit transmitted, and the signal upload return circuit uploads the voltage state.
Referring to fig. 3, in the voltage sampling circuit, n ends of the voltage transformers TVa, TVb, TVc are connected in parallel and grounded, an end a of the voltage transformer TVa is connected with a end 5 of the intermediate relay 6K, an end a of the voltage transformer TVb is connected with an end 6 of the intermediate relay 6K, an end a of the voltage transformer TVc is connected with an end 7 of the intermediate relay 6K, an end 9 of the intermediate relay 6K is connected with ends 5, 6 of the voltage relay 1KV and ends 5, 6 of the 3KV in parallel, an end 10 of the intermediate relay 6K is connected with ends 7, 8 of the voltage relay 1KV and a common end of ends 5, 6 of the 2KV, and an end 11 of the intermediate relay 6K is connected with ends 7, 8 of the voltage relay 2KV and ends 7, 8 of the 3KV in parallel.
Referring to fig. 4, in the voltage state loop, the positive pole L + of the power supply is connected with the 3 end of a miniature circuit breaker DK3, the 4 end of the miniature circuit breaker is connected with the 13 end of a knife-fuse switch QSA, the 1 end of a voltage relay 1KV, the 1 end of a voltage relay 2KV, the 1 end of a voltage relay 3KV, the 1 end of a time relay 1KT and the 1 end of a time relay 2KT in parallel, the 14 end of the knife-fuse switch QSA is connected with the 14 end of an intermediate relay 3K, the 14 end of an intermediate relay 6K, the 3 end of a voltage relay 1KV, the 3 end of a voltage relay 2KV, the 3 end of a voltage relay 3KV, the 3 end of a voltage relay 2KV, the 4 end of a voltage relay 3KV, the 1 end of an intermediate relay 4K, the 6 end of an intermediate relay 7K, the 6 end of an intermediate relay 8K and the 6 end common end of an intermediate relay 9K, the 9 end of the intermediate relay 4K is connected with the 7 end of the time relay 1KT, the 7 end parallel end of the time relay 2KT, the 10 end of the intermediate relay 7K, the 10 end of the intermediate relay 8K and the 10 end parallel end of the intermediate relay 9K are connected with the 14 end of the intermediate relay 4K, the 9 end of the intermediate relay 7K is connected with the 1 end of the intermediate relay 8K, the 9 end of the intermediate relay 8K is connected with the 1 end of the intermediate relay 9K, the 9 end of the intermediate relay 9K is connected with the 14 end of the intermediate relay 5K, the 2 end of the voltage relay 1KV is connected with the 14 end of the intermediate relay 7K, the 2 end of the voltage relay 2KV is connected with the 14 end of the intermediate relay 8K, the 2 end of the voltage relay 3KV is connected with the 14 end of the intermediate relay 9K, the 3 end of the time relay 1KT is connected with the 14 end of the intermediate relay KA11, the 14 end of the intermediate relay KA21 and the 14 end parallel end of the intermediate relay KA31, the 3 end of the time relay 2KT is connected with the 14 end of the intermediate relay KA41, the 13 end of the intermediate relay 3K, the 13 end of the intermediate relay 6K, the 2 end of the time relay 1KT, the 2 end of the time relay 2KT, the 13 end of the intermediate relay 4K, the 13 end of the intermediate relay 5K, the 13 end of the intermediate relay 7K, the 13 end of the intermediate relay 8K, the 13 end of the intermediate relay 9K, the 13 end of the intermediate relay KA11, the 13 end of the intermediate relay KA21, the 13 end of the intermediate relay KA31 and the 13 end of the intermediate relay KA41 are connected with the 2 end of the miniature circuit breaker DK3 in parallel, and the 1 end of the miniature circuit breaker DK3 is connected with the power supply negative electrode L-.
Referring to fig. 5, the signal is transmitted back to the end 1, end 9, end 2, end 10, end 3, end 11, end 8, end 12 of the intermediate relay KA11, end 1, end 9, end 2, end 10, end 3, end 11, end 8, end 12 of the intermediate relay KA31, end 1, end 9, end 2, end 10, end 3, end 11, end 8, end 12 of the intermediate relay KA41, and auxiliary points of the end 6 and end 10 of the intermediate relay 5K.
Use the utility model discloses in the time, will the utility model discloses be connected with a main wiring circuit of the shown conventional of figure 1, a main wiring circuit of conventional is that the electric wire netting is established ties with sword fuse switch QSA inlet wire side, and sword fuse switch QSA outgoing line side is connected with voltage transformer TVa, TVb, TVc's parallel end.
After the knife-fuse switch QSA is closed, the auxiliary contact ends 13 and 14 are connected, the intermediate relay coils 3K and 6K are electrified, the auxiliary contact ends 5 and 9, 6 and 10, and 7 and 11 of the intermediate relay coil 6K are normally opened, the low-voltage relay coils 1KV, 2KV and 3KV are electrified, and the voltage sampling loop is conducted; the 3 ends and the 4 ends of the low-voltage relay 1KV, 2KV and 3KV normally closed auxiliary contacts are disconnected, and the 1 ends and the 2 ends of the low-voltage relay 1KV, 2KV and 3KV normally open auxiliary contacts are closed; when any phase of system voltage A, B, C is disconnected, the states of the 3 end and the 4 end of the corresponding low-voltage relay 1KV or 2KV or 3KV auxiliary contact are changed from an open point to a closed point, the time relay 1KT and 2KT coils are conducted, the intermediate relay 4K coil is conducted, the time relay 1KT delay closed point 1 end and the 3 end delay 9s are closed, the intermediate relay KA11, KA21 and KA31 coils are conducted, the time relay 2KT delay closed point 1 end and the 3 end delay 0.5s are closed, and the intermediate relay KA41 coil is conducted; when the three phases of the system voltage A, B, C have low voltage simultaneously, the states of the 1 end and the 2 end of the auxiliary contacts of the low-voltage relays 1KV, 2KV and 3KV are changed from a closed point to an open point, the coils of the intermediate relays 7K, 8K and 9K lose power simultaneously, and the intermediate relay 5K is conducted; the auxiliary contacts of the intermediate relays KA11, KA21, KA31, KA41 and 5K are led to the information acquisition device.
In the embodiment, the models of the voltage transformers TVa, TVb and TVc are JDG-0.5 AC380/100V, the model of the time relay 1KT is ST3 PA-S9S, the model of the time relay 2KT is ST3 PA-S0.5S, the models of the intermediate relays 3K-9K, KA11, KA21, KA31 and KA41 are FCR4LD8, the model of the miniature circuit breaker DK3 is C65H-DC-C6A/2P, and the models of the voltage relays 1KV, 2KV and 3KV are DY-28C.
Claims (4)
1. The over-under voltage monitoring protection control device is characterized by comprising a voltage sampling loop, a voltage state loop and a signal uploading loop, wherein the voltage sampling loop is used for sampling voltage and transmitting the voltage to the voltage state loop, the voltage state loop analyzes a voltage sampling signal transmitted by the voltage sampling loop and transmits the voltage sampling signal to the signal uploading loop, and the signal uploading loop uploads the voltage state.
2. The under-voltage monitoring protection control device according to claim 1, wherein n ends of the voltage transformers TVa, TVb and TVc in the voltage sampling loop are connected in parallel and grounded, a end of the voltage transformer TVa is connected with 5 ends of the intermediate relay 6K, a end of the voltage transformer TVb is connected with 6 ends of the intermediate relay 6K, a end of the voltage transformer TVc is connected with 7 ends of the intermediate relay 6K, 9 ends of the intermediate relay 6K are connected with 5 ends and 6 ends of the voltage relay 1KV and 5 ends and 6 ends of the 3KV in parallel, 10 ends of the intermediate relay 6K are connected with common ends of 7 ends and 8 ends of the voltage relay 1KV and 5 ends and 6 ends of the 2KV, and 11 ends of the intermediate relay 6K are connected with parallel ends of 7 ends and 8 ends of the voltage relay 2KV and 7 ends and 8 ends of the 3 KV.
3. The under-voltage monitoring protection control device as claimed in claim 1, wherein the positive power L + in the voltage status loop is connected to the 3 end of the miniature circuit breaker DK3, the 4 end of the miniature circuit breaker is connected to the 13 end of the knife-fuse switch QSA, the 1 end of the voltage relay 1KV, the 1 end of the voltage relay 2KV, the 1 end of the voltage relay 3KV, the 1 end of the time relay 1KT, and the 1 end of the time relay 2KT in parallel, the 14 end of the knife-fuse switch QSA is connected to the 14 end of the intermediate relay 3K, the 14 end of the intermediate relay 6K, the 3 end of the voltage relay 1KV, the 3 end of the voltage relay 2KV, the 3 end of the voltage relay 3KV, and the 1 end of the intermediate relay 7K in parallel, the 4 end of the voltage relay 1KV is connected to the 4 end of the voltage relay 2KV, the 4 end of the voltage relay 3KV, the 1 end of the intermediate relay 4K, the 6 end of the intermediate relay 7K, and the terminal of the voltage relay, The end 6 of the intermediate relay 8K, the end 6 common end of the intermediate relay 9K, the end 9 of the intermediate relay 4K connected with the end 7 of the time relay 1KT, the end 7 parallel connected with the time relay 2KT, the end 10 of the intermediate relay 7K, the end 10 of the intermediate relay 8K, the end 10 of the intermediate relay 9K connected with the end 14 of the intermediate relay 4K, the end 9 of the intermediate relay 7K connected with the end 1 of the intermediate relay 8K, the end 9 of the intermediate relay 8K connected with the end 1 of the intermediate relay 9K, the end 9 of the intermediate relay 9K connected with the end 14 of the intermediate relay 5K, the end 2 of the voltage relay 1KV connected with the end 14 of the intermediate relay 7K, the end 2 of the voltage relay 2KV connected with the end 14 of the intermediate relay 8K, the end 2 of the voltage relay 3KV connected with the end 14 of the intermediate relay 9K, the end 3 of the time relay 1KT connected with the end 14, the end of the intermediate relay KA11, The 14 end of the intermediate relay KA21 and the 14 end of the intermediate relay KA31 are connected in parallel, the 3 end of the time relay 2KT is connected with the 14 end of the intermediate relay KA41, the 13 end of the intermediate relay 3K, the 13 end of the intermediate relay 6K, the 2 end of the time relay 1KT, the 2 end of the time relay 2KT, the 13 end of the intermediate relay 4K, the 13 end of the intermediate relay 5K, the 13 end of the intermediate relay 7K, the 13 end of the intermediate relay 8K, the 13 end of the intermediate relay 9K, the 13 end of the intermediate relay KA11, the 13 end of the intermediate relay KA21, the 13 end of the intermediate relay KA31 and the 13 end of the intermediate relay KA41 are connected in parallel to the 2 end of the miniature circuit breaker DK3, and the 1 power supply cathode L-of the miniature circuit breaker 3 is connected to the 2 end of the miniature circuit breaker DK 3.
4. An undervoltage monitoring protection control device according to claim 1, wherein said signal is transmitted back up to auxiliary points of relays KA11, KA21, KA31, KA41 and KA 5K, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120756352.5U CN214707144U (en) | 2021-04-14 | 2021-04-14 | Over-under voltage monitoring protection control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120756352.5U CN214707144U (en) | 2021-04-14 | 2021-04-14 | Over-under voltage monitoring protection control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214707144U true CN214707144U (en) | 2021-11-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120756352.5U Active CN214707144U (en) | 2021-04-14 | 2021-04-14 | Over-under voltage monitoring protection control device |
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| Country | Link |
|---|---|
| CN (1) | CN214707144U (en) |
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2021
- 2021-04-14 CN CN202120756352.5U patent/CN214707144U/en active Active
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