CN213212719U - Novel 690V variable frequency motor power supply system - Google Patents
Novel 690V variable frequency motor power supply system Download PDFInfo
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- CN213212719U CN213212719U CN202021719807.8U CN202021719807U CN213212719U CN 213212719 U CN213212719 U CN 213212719U CN 202021719807 U CN202021719807 U CN 202021719807U CN 213212719 U CN213212719 U CN 213212719U
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Abstract
The utility model relates to a novel 690V inverter motor power supply system, including 690V converter cabinet, 690V converter cabinet includes 0.69kV generating line, 0.4kV generating line, 10kV inlet wire and 0.69kV inverter motor and is qualified for the next round of competitions, and its structural feature lies in: the high-voltage direct current motor power supply further comprises a three-winding transformer, a surge protector, an isolating switch, a fuse switch, a filtering device, a frequency converter, a contactor, a soft starter, a fuse, a breaker and a thermal relay, wherein a 0.69kV bus, a 0.4kV bus and a 10kV incoming line are connected with the three-winding transformer, the 0.69kV bus and the 0.4kV bus are respectively connected with the surge protector, the isolating switch, the fuse switch, the filtering device, the frequency converter, the filtering device and the contactor are sequentially connected, the isolating switch, the fuse, the soft starter and the contactor are sequentially connected, the isolating switch is connected with the 0.69kV bus, and the contactor is connected with a 0.69kV variable frequency motor outgoing line.
Description
Technical Field
The utility model relates to a novel 690V inverter motor power supply system, mainly used 690V inverter motor and supporting cooling fan, electric motor heater and 690V converter control power supply.
Background
The 380V motor is low in manufacturing cost, but the power of the 380V motor is limited by voltage and cannot be applied to high-power occasions; the 6/10kV motor can meet the requirement of high-power occasions, but because the voltage level is higher, the insulation requirement is higher, the cost is higher, the problem is well solved by the 690V motor, the motor can better adapt to the requirement of high power, and the problems of higher insulation requirement and higher manufacturing cost are well solved by the voltage level of less than 1 kV.
At present, 690V variable frequency motors are widely used in occasions where high-power motors are needed in engineering projects such as partial thermal power plants, paper making, metallurgy and mines. A690V variable frequency motor generally adopts a 10/0.69kV transformer special for being arranged beside a frequency converter cabinet to supply power, but a cooling fan or a motor heater matched with the variable frequency motor, a control power supply of the 690V frequency converter and a power supply in the cabinet generally adopt AC 220/380V, a multi-path AC 220/380V power supply needs to be additionally provided for a 690V frequency converter cabinet body and variable frequency motor matching equipment, the power supply reliability of the motor and auxiliary equipment is reduced due to different power supply sources, and meanwhile, the electric resource is greatly wasted.
In order to solve the problem, a new 690V inverter motor power supply system needs to be designed and developed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a structural design reasonable, reduce the 690V inverter motor power supply system of electric resource waste, be applicable to power for 200kW ~ 1000 kW's neotype 690V inverter motor power supply system generally.
The utility model provides a technical scheme that above-mentioned problem adopted is: this neotype 690V inverter motor power supply system, include the 690V converter cabinet, the 690V converter cabinet includes 0.69kV generating line, 0.4kV generating line, 10kV inlet wire and 0.69kV inverter motor and is qualified for the next round of competitions, and its structural feature lies in: still include three winding transformers, surge protector, isolator, sword fuse switch, filter equipment, converter, contactor, soft starter, fuse, circuit breaker and thermorelay, 0.69kV generating line, 0.4kV generating line and 10kV inlet wire all are connected with three winding transformers, 0.69kV generating line and 0.4kV generating line respectively are connected with a surge protector, isolator, sword fuse switch, filter equipment, converter, filter equipment and contactor connect gradually, isolator, fuse, soft starter and contactor connect gradually, isolator and 0.69kV generating line are connected, the contactor is qualified for the next round of competitions with 0.69kV inverter motor and is connected.
Furthermore, the 690V frequency converter cabinet further comprises a first outgoing line, a second outgoing line, a third outgoing line, a fourth outgoing line and a fifth outgoing line, wherein the first outgoing line, the second outgoing line, the third outgoing line, the fourth outgoing line and the fifth outgoing line are all connected with a 0.4kV bus.
Furthermore, a circuit breaker is arranged on a line connecting the 0.4kV bus and the three-winding transformer.
Further, a contactor is installed on a bypass of the soft starter.
Further, contactors are mounted on the fourth outgoing line and the fifth outgoing line.
Furthermore, a thermal relay is mounted on the fourth outgoing line.
Further, the three-winding transformer is connected with an outgoing line of the 0.69kV variable frequency motor.
Furthermore, the first outgoing line, the second outgoing line, the third outgoing line, the fourth outgoing line and the fifth outgoing line are connected with the outgoing line of the 0.69kV variable frequency motor.
Furthermore, the novel 690V variable frequency motor power supply system further comprises a three-winding transformer cabinet and a 400V low-voltage switch cabinet, wherein the 690V frequency converter cabinet and the 400V low-voltage switch cabinet are respectively positioned on two sides of the three-winding transformer cabinet.
Compared with the prior art, the utility model has the advantages of it is following: this neotype 690V inverter motor power supply system rational in infrastructure, safe and reliable can improve the reliability of electrical resource utilization ratio and power supply under the prerequisite of effectively guaranteeing 690V inverter motor and 690V inverter motor auxiliary load power consumption demand.
Drawings
Fig. 1 is a layout schematic diagram of a novel 690V inverter motor power supply system according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a 690V inverter motor power supply system according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a secondary interface of a 690V inverter motor power supply system according to an embodiment of the present invention.
In the figure: a three-winding transformer cabinet A, a 690V frequency converter cabinet B, a 400V low-voltage switch cabinet C,
Three-winding transformer 1, surge protector 2, isolating switch 3, fuse switch 4, filter 5, frequency converter 6, contactor 7, soft starter 8, fuse 9, breaker 10, thermal relay 11,
The first outgoing line 01, the second outgoing line 02, the third outgoing line 03, the fourth outgoing line 04 and the fifth outgoing line 05.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.
Examples are given.
Referring to fig. 1 to 3, it should be understood that the structures, ratios, sizes, etc. shown in the drawings attached to the present specification are only used for matching with the contents disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essence, and any modification of the structures, changes of the ratio relationship, or adjustment of the sizes should still fall within the scope that the technical contents disclosed in the present invention can cover without affecting the efficacy and the achievable purpose of the present invention. Meanwhile, in the present specification, if there are terms such as "upper", "lower", "left", "right", "middle" and "one", they are used for clarity of description only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are considered as the scope of the present invention without substantial changes in the technical content.
The novel 690V variable frequency motor power supply system in this embodiment includes three winding transformer cabinet A, 690V converter cabinet B, 400V low-voltage switchgear C, and 690V converter cabinet B and 400V low-voltage switchgear C are located three winding transformer cabinet A's both sides respectively.
The 690V frequency converter cabinet B in the embodiment comprises a 0.69kV bus, a 0.4kV bus, a 10kV incoming line, a 0.69kV variable frequency motor outgoing line, a three-winding transformer 1, a surge protector 2, an isolating switch 3, a fuse switch 4, a filter device 5, a frequency converter 6, a contactor 7, a soft starter 8, a fuse 9, a circuit breaker 10, a thermal relay 11, a first outgoing line 01, a second outgoing line 02, a third outgoing line 03, a fourth outgoing line 04 and a fifth outgoing line 05.
In this embodiment 0.69kV generating line, 0.4kV generating line and 10kV inlet wire all are connected with three-winding transformer 1, 0.69kV generating line and 0.4kV generating line are respectively connected with one surge protector 2, isolator 3, knife-fuse switch 4, filter 5, frequency converter 6, filter 5 and contactor 7 are connected in sequence, isolator 3, fuse 9, soft starter 8 and contactor 7 are connected in sequence, isolator 3 is connected with 0.69kV generating line, contactor 7 is connected with 0.69kV inverter motor outlet wire.
In the embodiment, the first outgoing line 01, the second outgoing line 02, the third outgoing line 03, the fourth outgoing line 04 and the fifth outgoing line 05 are connected with a 0.4kV bus, contactors 7 are mounted on the fourth outgoing line 04 and the fifth outgoing line 05, and a thermal relay 11 is mounted on the fourth outgoing line 04. The first outgoing line 01, the second outgoing line 02, the third outgoing line 03, the fourth outgoing line 04 and the fifth outgoing line 05 are connected with the outgoing line of the 0.69kV variable frequency motor.
In this embodiment, a circuit breaker 10 is installed on a line connecting the 0.4kV bus and the three-winding transformer 1, a contactor 7 is installed on a bypass of the soft starter 8, and the three-winding transformer 1 is connected with an outgoing line of the 0.69kV variable frequency motor.
Specifically, a 400V low-voltage switch cabinet and a 690V frequency converter cabinet are respectively positioned at two sides of a three-winding transformer cabinet, the three-winding transformer 1 is a 10/0.69/0.4kV three-winding transformer, the three-winding transformer 1 provides power for a variable frequency motor, and a 0.4kV side outgoing line provides power for loads such as a cooling fan or a motor heater of the variable frequency motor, a frequency converter control power supply, a transformer temperature control device, a transformer cooling fan, heating, dehumidifying and lighting in the cabinet and the like.
The three-winding transformer cabinet A comprises a 10/0.69/0.4kV three-winding transformer body, a temperature control device, a heat radiation fan, a stainless steel enclosure of the transformer, a vertical busbar in the enclosure and other related accessories and the like; the 690V frequency converter cabinet B comprises a frequency converter 6, a soft starter 8, a contactor 7, a fuse 9, a fuse switch 4, a filter device 5, a surge protector 2, a frequency converter cabinet body, devices for heating, dehumidifying and lighting in the cabinet body, a bus bar in the cabinet body, secondary related accessories and the like, wherein the frequency converter 6 is a 690V frequency converter, the soft starter 8 is a 690V motor soft starter, the contactor 7 is a 690V alternating current contactor, the fuse 9 is a 690V fuse, the fuse switch 4 is a 690V fuse switch, the filter device 5 is a filter device matched with the 690V frequency converter, and the surge protector 2 is a surge protector; the 400V low-voltage switch cabinet C comprises a breaker, a surge protector, an alternating current contactor, a thermal relay, the surge protector, a low-voltage cabinet body, devices for heating, dehumidifying and illuminating in the cabinet, a busbar in the cabinet body, secondary related accessories and the like.
The 10/0.69/0.4kV three-winding transformer 1 is fixed in a three-winding transformer cabinet A, and 0.4kV and 0.69kV side outgoing lines of the three-winding transformer 1 are respectively connected with a 400V low-voltage switch cabinet C and a 690V frequency converter cabinet B incoming busbar or a cable. The 690V frequency converter cabinet B can cancel the bypass operation mode.
690V converter cabinet B and 400V low-voltage switchgear C are located three winding transformer cabinet A's both sides respectively, require to arranging of novel 690V inverter motor power supply system simultaneously.
The 10kV power supply can be respectively changed into two voltage levels of 400V and 690V through a 10/0.69/0.4kV three-winding transformer cabinet A; the 690V power supply supplies power to a variable frequency motor, and the variable frequency motor can adopt a bypass or not; the 400V power supply is 690V variable frequency motor cooling fan or motor heater, transformer temperature controller, transformer cooling fan, frequency converter control power supply, heating in the cabinet, lighting, dehumidification load and other load power supplies.
The 690V variable frequency motor power supply system can be incorporated into an electrical integrated automation system and is controlled and monitored on a DCS.
The 690V variable frequency motor power supply system can feed back to the DCS at any time, including but not limited to the following signals, and the signals are displayed on the DCS:
digital signal: the method comprises the following steps of frequency converter ready, frequency converter operation, frequency converter failure, frequency converter remote control, soft starter remote control, cooling fan operation, soft starter ready, soft starter failure and soft starter operation.
Analog quantity signal: 4-20 mA current feedback signal, 4-20 mA speed feedback signal and 4-20 mA current feedback signal of the soft starter.
Meanwhile, the DCS can remotely control the 690V variable frequency motor power supply system, and the control method comprises but is not limited to the following control modes:
digital signal: the DCS can remotely start and stop the 690V variable frequency motor power supply system; and remotely starting and stopping the operation of the bypass of the 690V variable frequency motor power supply system.
Analog quantity signal: the DCS system can remotely set the operation speed of the 690V variable frequency motor power supply system.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.
Claims (9)
1. The utility model provides a novel 690V inverter motor power supply system, includes 690V converter cabinet (B), 690V converter cabinet (B) is qualified for the next round of competitions including 0.69kV generating line, 0.4kV generating line, 10kV inlet wire and 0.69kV inverter motor, its characterized in that: the 690V frequency converter cabinet (B) further comprises a three-winding transformer (1), a surge protector (2), an isolating switch (3), a knife fuse switch (4), a filter device (5), a frequency converter (6), a contactor (7), a soft starter (8), a fuse (9), a circuit breaker (10) and a thermal relay (11), wherein the 0.69kV bus, the 0.4kV bus and the 10kV incoming line are connected with the three-winding transformer (1), the 0.69kV bus and the 0.4kV bus are respectively connected with the surge protector (2), the isolating switch (3), the knife fuse switch (4), the filter device (5), the frequency converter (6), the filter device (5) and the contactor (7) are sequentially connected, the isolating switch (3), the fuse (9), the soft starter (8) and the contactor (7) are sequentially connected, the isolating switch (3) is connected with the 0.69kV bus, and the contactor (7) is connected with a 0.69kV variable frequency motor outgoing line.
2. The novel 690V variable frequency motor power supply system of claim 1, wherein: 690V converter cabinet (B) still includes a (01), No. two be qualified for the next round of competitions (02), No. three be qualified for the next round of competitions (03), No. four be qualified for the next round of competitions (04) and No. five be qualified for the next round of competitions (05), a (01), No. two be qualified for the next round of competitions (02), No. three be qualified for the next round of competitions (03), No. four be qualified for the next round of competitions (04) and No. five be qualified for the next round of.
3. The novel 690V variable frequency motor power supply system of claim 1, wherein: and a circuit breaker (10) is arranged on a circuit connecting the 0.4kV bus and the three-winding transformer (1).
4. The novel 690V variable frequency motor power supply system of claim 1, wherein: and a contactor (7) is arranged on a bypass of the soft starter (8).
5. The novel 690V variable frequency motor power supply system of claim 2, wherein: and contactors (7) are arranged on the fourth outgoing line (04) and the fifth outgoing line (05).
6. The novel 690V variable frequency motor power supply system of claim 5, wherein: and a thermal relay (11) is arranged on the fourth outgoing line (04).
7. The novel 690V variable frequency motor power supply system of claim 1, wherein: the three-winding transformer (1) is connected with a 0.69kV variable frequency motor outgoing line.
8. The novel 690V variable frequency motor power supply system of claim 2, wherein: the first outgoing line (01), the second outgoing line (02), the third outgoing line (03), the fourth outgoing line (04) and the fifth outgoing line (05) are connected with the outgoing line of the 0.69kV variable frequency motor.
9. The novel 690V variable frequency motor power supply system of claim 1, wherein: the novel 690V variable frequency motor power supply system further comprises a three-winding transformer cabinet (A) and a 400V low-voltage switch cabinet (C), wherein the 690V variable frequency transformer cabinet (B) and the 400V low-voltage switch cabinet (C) are respectively located on two sides of the three-winding transformer cabinet (A).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021719807.8U CN213212719U (en) | 2020-08-17 | 2020-08-17 | Novel 690V variable frequency motor power supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021719807.8U CN213212719U (en) | 2020-08-17 | 2020-08-17 | Novel 690V variable frequency motor power supply system |
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| CN213212719U true CN213212719U (en) | 2021-05-14 |
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| CN202021719807.8U Active CN213212719U (en) | 2020-08-17 | 2020-08-17 | Novel 690V variable frequency motor power supply system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114188949A (en) * | 2022-02-17 | 2022-03-15 | 中铁第六勘察设计院集团有限公司 | Low-voltage power distribution system for highway extra-long tunnel |
| CN116470643A (en) * | 2023-04-24 | 2023-07-21 | 北京城建设计发展集团股份有限公司 | Remote power distribution system for track traffic motor load |
-
2020
- 2020-08-17 CN CN202021719807.8U patent/CN213212719U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114188949A (en) * | 2022-02-17 | 2022-03-15 | 中铁第六勘察设计院集团有限公司 | Low-voltage power distribution system for highway extra-long tunnel |
| CN114188949B (en) * | 2022-02-17 | 2022-04-12 | 中铁第六勘察设计院集团有限公司 | Low-voltage power distribution system for highway extra-long tunnel |
| CN116470643A (en) * | 2023-04-24 | 2023-07-21 | 北京城建设计发展集团股份有限公司 | Remote power distribution system for track traffic motor load |
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