CN214255721U - System based on diesel generator is high-voltage station-use stand-by power supply - Google Patents
System based on diesel generator is high-voltage station-use stand-by power supply Download PDFInfo
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- CN214255721U CN214255721U CN202120327661.0U CN202120327661U CN214255721U CN 214255721 U CN214255721 U CN 214255721U CN 202120327661 U CN202120327661 U CN 202120327661U CN 214255721 U CN214255721 U CN 214255721U
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Abstract
The utility model discloses a system based on diesel generator does high pressure mill and uses stand-by power supply, working power supply inlet wire unit and stand-by power supply inlet wire unit are connected with high pressure mill with the generating line, security personnel's section unit and the one end of first low pressure mill with the transformer unit, the one end of second low pressure mill with the transformer unit and the one end of third low pressure mill with the transformer unit are connected, the other end of first low pressure mill with the transformer unit, the other end of second low pressure mill with the transformer unit, the other end of third low pressure mill with the transformer unit and remaining high pressure mill with the load unit and high pressure mill with the generating line be connected, diesel generator inlet wire unit is connected with third low pressure mill with the transformer unit, this system is when the whole mill loses power, not only can provide the power for security section, and can provide the power for all the loads of remaining mill according to the actual demand.
Description
Technical Field
The utility model belongs to the technical field of the electric power is experimental, a system based on diesel generator does high pressure mill and uses stand-by power supply is related to.
Background
In the operation process of the power plant, various plant loads need to consume a part of electric energy, so that the normal operation of the power plant is guaranteed, and whether a plant power supply system is safe and reliable is of great importance to the power plant. However, during the operation of a power plant, a power loss event from the whole plant frequently occurs. The conventional station power supply system can be divided into a high-voltage station power supply system and a low-voltage station power supply system according to the voltage grade, the high-voltage station power supply system usually comprises two paths of power supply incoming lines, one path is provided by a high-voltage station transformer, the other path is provided by a starting standby transformer, and the starting standby transformer is used as a standby power supply. The main loads of the high-voltage station power supply system are each high-voltage motor and low-voltage station transformer of the power plant. The low-voltage station power supply system is powered by various low-voltage station transformers, main loads are various low-voltage station auxiliary machines and various industrial control systems, loads needing uninterrupted power supply in the low-voltage station loads are powered by a security section, and a diesel generator is usually adopted as a standby power supply in the security section. When the whole power plant of the power plant loses power, the conventional plant power system can only provide power for the security section through the diesel generator, so that the system of the security section is ensured to supply power reliably, and all the other high-voltage and low-voltage plant power systems lose power supply. Therefore, the system based on the diesel generator as the high-voltage station standby power supply is significant.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a system based on diesel generator does high pressure mill and uses stand-by power supply, this system not only can provide the power for security personnel's section when whole factory loses the electricity to can provide the power for all the other mill loads according to the actual demand.
In order to achieve the above object, the system of the present invention for high voltage station service standby power supply based on diesel generator comprises a working power supply incoming line unit, a standby power supply incoming line unit, a diesel generator incoming line unit, a high voltage station service bus, a first low voltage station service transformer unit, a second low voltage station service transformer unit, a third low voltage station service transformer unit, other high voltage station service load units and a security section unit;
the working power supply incoming line unit and the standby power supply incoming line unit are connected with a high-voltage station bus, the security section unit is connected with one end of the first low-voltage station transformer unit, one end of the second low-voltage station transformer unit and one end of the third low-voltage station transformer unit, the other end of the first low-voltage station transformer unit, the other end of the second low-voltage station transformer unit, the other end of the third low-voltage station transformer unit and the rest high-voltage station load unit are connected with the high-voltage station bus, and the diesel generator incoming line unit is connected with the third low-voltage station transformer unit.
The working power supply incoming line unit comprises a working power supply incoming line power supply and a working power supply incoming line switch, and the working power supply incoming line power supply is connected with the high-voltage station bus through the working power supply incoming line switch.
The standby power supply incoming line unit comprises a standby power supply incoming line power supply and a standby power supply incoming line switch, and the standby power supply incoming line power supply is connected with the high-voltage station bus through the standby power supply incoming line switch.
The diesel generator inlet wire unit comprises a diesel generator and a diesel generator outlet switch, and the diesel generator is connected with the third low-voltage station transformer unit through the diesel generator outlet switch.
The first low-voltage station transformer unit comprises a first low-voltage station transformer, a first low-voltage station transformer low-voltage side bus incoming switch, a first low-voltage station transformer low-voltage side bus and a first low-voltage station transformer low-voltage side bus feeder switch, one end of the first low-voltage station transformer high-voltage side switch is connected with the high-voltage station bus, and the other end of the first low-voltage station transformer high-voltage side switch is connected with the security guard section unit sequentially through the first low-voltage station transformer, the first low-voltage station transformer low-voltage side bus incoming switch, the first low-voltage station transformer low-voltage side bus and the first low-voltage station transformer low-voltage side bus feeder switch.
The second low-voltage station transformer unit comprises a second low-voltage station transformer, a second low-voltage station transformer incoming line switch, a second low-voltage station transformer low-voltage side bus and a second low-voltage station transformer low-voltage side bus feeder switch, one end of the second low-voltage station transformer high-voltage side switch is connected with the high-voltage station transformer, and the other end of the second low-voltage station transformer high-voltage side switch is connected with the security section unit through the second low-voltage station transformer, the second low-voltage station transformer low-voltage side bus incoming line switch, the second low-voltage station transformer low-voltage side bus and the second low-voltage station transformer low-voltage side bus feeder switch in sequence.
The third low-voltage station transformer unit comprises a third low-voltage station transformer high-voltage side switch and a third low-voltage station transformer, and the diesel generator inlet wire unit comprises a diesel generator outlet switch and a diesel generator;
one end of the third low-voltage station transformer substation high-voltage side switch is connected with the high-voltage station bus, the other end of the third low-voltage station transformer substation high-voltage side switch is divided into two paths, one path is connected with the security section unit through the third low-voltage station transformer substation, and the other path is connected with the diesel generator through the diesel generator outlet switch.
The safety section unit comprises a first safety section bus incoming switch, a second safety section bus incoming switch, a third safety section bus incoming switch and a safety section bus, wherein the safety section bus is connected with the first low-voltage station transformer unit through the first safety section bus incoming switch, the safety section bus is connected with the second low-voltage station transformer unit through the second safety section bus incoming switch, and the safety section bus is connected with the third low-voltage station transformer unit through the third safety section bus incoming switch.
The utility model discloses following beneficial effect has:
system based on diesel generator does high pressure mill stand-by power supply when concrete operation, diesel generator inlet wire unit is in hot standby state, when whole factory lost electricity, diesel generator inlet wire unit is as security personnel section unit back-up source, the operation of automatic input, for security personnel section generating line provides the power, guarantee security personnel section load normal operating, simultaneously, according to actual demand, can be for high pressure mill to use the generating line power supply, for partial mill to load provides the power, the commonality is stronger, the security is high, convenient to popularize and use.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the operation of the present invention when the unit of the present system is in normal operation;
FIG. 3 is a schematic diagram of the system when power is lost;
fig. 4 is a working schematic diagram of the utility model when the whole plant of the system loses power.
Wherein, 1 is a working power supply incoming line unit, 1-1 is a working power supply incoming line power supply, 1-2 is a working power supply incoming line switch, 2 is a standby power supply incoming line unit, 2-1 is a standby power supply incoming line power supply, 2-2 is a standby power supply incoming line switch, 3 is a high-voltage station bus, 4 is a first low-voltage station transformer unit, 4-1 is a first low-voltage station transformer, 4-2 is a first low-voltage station transformer, 4-3 is a first low-voltage station transformer incoming line switch, 4-4 is a first low-voltage station transformer low-voltage side bus, 4-5 is a first low-voltage station transformer low-voltage side bus feeder switch, 5 is a second low-voltage station transformer unit, 5-1 is a second low-voltage station transformer high-voltage side switch, 5-2 is a second low-voltage station transformer, 5-3 is a second low-voltage station transformer low-voltage side incoming line switch, 5-4 is a second low-voltage station transformer low-voltage side bus, 5-5 is a second low-voltage station transformer low-voltage side bus feeder switch, 6 is a third low-voltage station transformer unit, 6-1 is a third low-voltage station transformer high-voltage side switch, 6-2 is a third low-voltage station transformer, 7 is a diesel generator incoming line unit, 7-1 is a diesel generator outlet switch, 7-2 is a diesel generator, 8 is other high-voltage station transformer load units, 9 is a security section unit, 9-1 is a security section bus first incoming line switch, 9-2 is a security section bus second incoming line switch, 9-3 is a security section bus third incoming line switch, and 9-4 is a security section bus.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings:
referring to fig. 1, the system for high-voltage station service standby power supply based on diesel generator of the present invention includes a working power supply incoming line unit 1, a standby power supply incoming line unit 2, a diesel generator incoming line unit 7, a high-voltage station service bus 3, a first low-voltage station service transformer unit 4, a second low-voltage station service transformer unit 5, a third low-voltage station service transformer unit 6, other high-voltage station service load units 8, and a security section unit 9; the working power supply incoming line unit 1 and the standby power supply incoming line unit 2 are connected with a high-voltage station transformer bus 3, the security section unit 9 is connected with one end of a first low-voltage station transformer unit 4, one end of a second low-voltage station transformer unit 5 and one end of a third low-voltage station transformer unit 6, the other end of the first low-voltage station transformer unit 4, the other end of the second low-voltage station transformer unit 5, the other end of the third low-voltage station transformer unit 6 and a residual high-voltage station transformer unit 8 are connected with the high-voltage station transformer bus 3, and the diesel generator incoming line unit 7 is connected with the third low-voltage station transformer unit 6.
The working power supply incoming line unit 1 comprises a working power supply incoming line power supply 1-1 and a working power supply incoming line switch 1-2, and the working power supply incoming line power supply 1-1 is connected with the high-voltage station bus 3 through the working power supply incoming line switch 1-2.
The standby power supply incoming line unit 2 comprises a standby power supply incoming line power supply 2-1 and a standby power supply incoming line switch 2-2, and the standby power supply incoming line power supply 2-1 is connected with the high-voltage station bus 3 through the standby power supply incoming line switch 2-2.
The diesel generator incoming line unit 7 comprises a diesel generator 7-2 and a diesel generator outlet switch 7-1, and the diesel generator 7-2 is connected with the third low-voltage station transformer unit 6 through the diesel generator outlet switch 7-1.
The first low-voltage station transformer unit 4 comprises a first low-voltage station transformer high-voltage side switch 4-1, a first low-voltage station transformer 4-2, a first low-voltage station transformer low-voltage side bus incoming switch 4-3, a first low-voltage station transformer low-voltage side bus 4-4 and a first low-voltage station transformer low-voltage side bus feeder switch 4-5, one end of the first low-voltage station transformer high-voltage side switch 4-1 is connected with the high-voltage station bus 3, and the other end of the first low-voltage station transformer high-voltage side switch 4-1 is connected with the security section unit 9 through the first low-voltage station transformer 4-2, the first low-voltage station transformer low-voltage side bus incoming switch 4-3, the first low-voltage station transformer low-voltage side bus 4-4 and the first low-voltage station transformer low-voltage side bus feeder switch 4-5 in sequence.
The second low-voltage station transformer unit 5 comprises a second low-voltage station transformer high-voltage side switch 5-1, a second low-voltage station transformer 5-2, a second low-voltage station transformer low-voltage side bus incoming switch 5-3, a second low-voltage station transformer low-voltage side bus 5-4 and a second low-voltage station transformer low-voltage side bus feeder switch 5-5, one end of the second low-voltage station transformer high-voltage side switch 5-1 is connected with the high-voltage station bus 3, and the other end of the second low-voltage station transformer low-voltage side switch 5-1 is connected with the security section unit 9 through the second low-voltage station transformer 5-2, the second low-voltage station transformer low-voltage side bus incoming switch 5-3, the second low-voltage station transformer low-voltage side bus 5-4 and the second low-voltage station transformer low-voltage side bus feeder switch 5-5 in sequence.
The third low-voltage station transformer unit 6 comprises a third low-voltage station transformer high-voltage side switch 6-1 and a third low-voltage station transformer 6-2, and the diesel generator inlet wire unit 7 comprises a diesel generator outlet switch 7-1 and a diesel generator 7-2; one end of a third low-voltage station high-voltage side switch 6-1 is connected with the high-voltage station bus 3, the other end of the third low-voltage station high-voltage side switch 6-1 is divided into two paths, one path is connected with a security section unit 9 through a third low-voltage station transformer 6-2, and the other path is connected with a diesel generator 7-2 through a diesel generator outlet switch 7-1.
The security section unit 9 comprises a security section bus first incoming line switch 9-1, a security section bus second incoming line switch 9-2, a security section bus third incoming line switch 9-3 and a security section bus 9-4, the security section bus 9-4 is connected with the first low-voltage station transformer unit 4 through the security section bus first incoming line switch 9-1, the security section bus 9-4 is connected with the second low-voltage station transformer unit 5 through the security section bus second incoming line switch 9-2, and the security section bus 9-4 is connected with the third low-voltage station transformer unit 6 through the security section bus third incoming line switch 9-3.
As shown in fig. 2, when the unit normally operates, the high-voltage station service bus 3 is powered by the working power supply incoming line unit 1, the standby power supply incoming line unit 2 serves as a standby power supply of the high-voltage station service bus 3, the security section bus 9-4 is powered by the first low-voltage station service transformer unit 4, the diesel generator incoming line unit 7 is in a hot standby state, the second low-voltage station service transformer unit 5 and the diesel generator incoming line unit 7 serve as standby power supplies of the security section bus 9-4, and the third low-voltage station service high-voltage side switch 6-1 is in a switching-off state.
As shown in fig. 3, when the whole plant loses power, the diesel generator is only used as a safety section standby power supply, and at this time, the diesel generator 7-2 supplies power to the safety section bus 9-4 through the diesel generator outlet switch 7-1, the third low-voltage plant substation 6-2 and the safety section bus third incoming line switch 9-3.
As shown in fig. 4, when the whole plant loses power, the diesel generator is not only used as a security section standby power supply, but also used as a partial plant load standby power supply, at this time, the diesel generator 7-2 supplies power to the security section bus 9-4 through the diesel generator outlet switch 7-1, the third low-voltage plant transformer 6-2 and the security section bus third inlet switch 9-3, and according to actual requirements, the diesel generator 7-2 supplies power to the high-voltage plant bus 3 through the diesel generator outlet switch 7-1 and the third low-voltage plant transformer side switch 6-1, and supplies power to a partial plant load within the allowable capacity range of the diesel generator.
Claims (8)
1. A system based on a diesel generator as a high-voltage station-service standby power supply is characterized by comprising a working power supply incoming line unit (1), a standby power supply incoming line unit (2), a diesel generator incoming line unit (7), a high-voltage station-service bus (3), a first low-voltage station-service transformer unit (4), a second low-voltage station-service transformer unit (5), a third low-voltage station-service transformer unit (6), other high-voltage station-service load units (8) and a security section unit (9);
the working power supply incoming line unit (1) and the standby power supply incoming line unit (2) are connected with a high-voltage station transformer bus (3), the security section unit (9) is connected with one end of a first low-voltage station transformer unit (4), one end of a second low-voltage station transformer unit (5) and one end of a third low-voltage station transformer unit (6), the other end of the first low-voltage station transformer unit (4), the other end of the second low-voltage station transformer unit (5), the other end of the third low-voltage station transformer unit (6) and other high-voltage station load units (8) are connected with the high-voltage station transformer bus (3), and the diesel generator incoming line unit (7) is connected with the third low-voltage station transformer unit (6).
2. The system for high-voltage station service backup power supply based on diesel generator as claimed in claim 1, characterized in that the working power supply incoming line unit (1) comprises a working power supply incoming line power supply (1-1) and a working power supply incoming line switch (1-2), the working power supply incoming line power supply (1-1) is connected with the high-voltage station service bus (3) through the working power supply incoming line switch (1-2).
3. The system for high-voltage plant standby power supply based on diesel generators as claimed in claim 1, wherein the standby power supply incoming line unit (2) comprises a standby power supply incoming line power supply (2-1) and a standby power supply incoming line switch (2-2), and the standby power supply incoming line power supply (2-1) is connected with the high-voltage plant bus (3) through the standby power supply incoming line switch (2-2).
4. The diesel generator based high-voltage plant standby power supply system as claimed in claim 1, wherein the diesel generator incoming line unit (7) comprises a diesel generator (7-2) and a diesel generator outlet switch (7-1), and the diesel generator (7-2) is connected with the third low-voltage plant transformer unit (6) through the diesel generator outlet switch (7-1).
5. The system for high-voltage plant standby power supply based on diesel generators as claimed in claim 1, wherein the first low-voltage plant transformer unit (4) comprises a first low-voltage plant transformer high-voltage side switch (4-1), a first low-voltage plant transformer (4-2), a first low-voltage plant transformer low-voltage side bus incoming line switch (4-3), a first low-voltage plant transformer low-voltage side bus (4-4) and a first low-voltage plant transformer low-voltage side bus feeder switch (4-5), one end of the first low-voltage plant transformer high-voltage side switch (4-1) is connected with the high-voltage plant bus (3), and the other end of the first low-voltage plant transformer high-voltage side switch (4-1) sequentially passes through the first low-voltage plant transformer (4-2), the first low-voltage plant transformer low-voltage side bus incoming line switch (4-3), the first low-voltage plant transformer low-voltage side bus (4-4) and the first low-voltage plant transformer low-voltage side bus feeder switch (4-4) The line switches (4-5) are connected with the security segment unit (9).
6. The system for high-voltage plant standby power supply based on diesel generators as claimed in claim 1, wherein the second low-voltage plant transformer unit (5) comprises a second low-voltage plant transformer high-voltage side switch (5-1), a second low-voltage plant transformer (5-2), a second low-voltage plant transformer low-voltage side bus incoming switch (5-3), a second low-voltage plant transformer low-voltage side bus (5-4) and a second low-voltage plant transformer low-voltage side bus feeder switch (5-5), one end of the second low-voltage plant transformer high-voltage side switch (5-1) is connected with the high-voltage plant bus (3), and the other end of the second low-voltage plant transformer high-voltage side switch (5-1) passes through the second low-voltage plant transformer (5-2), the second low-voltage plant transformer low-voltage side bus incoming switch (5-3), the second low-voltage plant transformer low-voltage side bus (5-4) and the second low-voltage plant transformer low-voltage side bus incoming switch (5-1) in sequence The line switch (5-5) is connected with the security segment unit (9).
7. The diesel generator based high-voltage plant backup power supply system according to claim 1, characterized in that the third low-voltage plant transformer unit (6) comprises a third low-voltage plant transformer high-voltage side switch (6-1) and a third low-voltage plant transformer (6-2), and the diesel generator inlet line unit (7) comprises a diesel generator outlet switch (7-1) and a diesel generator (7-2);
one end of a third low-voltage station high-voltage side switch (6-1) is connected with a high-voltage station bus (3), the other end of the third low-voltage station high-voltage side switch (6-1) is divided into two paths, one path is connected with a security section unit (9) through a third low-voltage station transformer (6-2), and the other path is connected with a diesel generator (7-2) through a diesel generator outlet switch (7-1).
8. The diesel-electric generator based high-voltage plant backup power supply system according to claim 1, the safety section unit (9) is characterized by comprising a safety section bus first incoming line switch (9-1), a safety section bus second incoming line switch (9-2), a safety section bus third incoming line switch (9-3) and a safety section bus (9-4), wherein the safety section bus (9-4) is connected with a first low-voltage station transformer unit (4) through the safety section bus first incoming line switch (9-1), the safety section bus (9-4) is connected with a second low-voltage station transformer unit (5) through the safety section bus second incoming line switch (9-2), and the safety section bus (9-4) is connected with a third low-voltage station transformer unit (6) through the safety section bus third incoming line switch (9-3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120327661.0U CN214255721U (en) | 2021-02-04 | 2021-02-04 | System based on diesel generator is high-voltage station-use stand-by power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120327661.0U CN214255721U (en) | 2021-02-04 | 2021-02-04 | System based on diesel generator is high-voltage station-use stand-by power supply |
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|---|---|
| CN214255721U true CN214255721U (en) | 2021-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120327661.0U Active CN214255721U (en) | 2021-02-04 | 2021-02-04 | System based on diesel generator is high-voltage station-use stand-by power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114825597A (en) * | 2022-06-29 | 2022-07-29 | 西安热工研究院有限公司 | Thermal power high-voltage direct-hanging energy storage backup power supply system for plant |
-
2021
- 2021-02-04 CN CN202120327661.0U patent/CN214255721U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114825597A (en) * | 2022-06-29 | 2022-07-29 | 西安热工研究院有限公司 | Thermal power high-voltage direct-hanging energy storage backup power supply system for plant |
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