CN215071660U - Multi-channel power supply system of combined cycle unit - Google Patents
Multi-channel power supply system of combined cycle unit Download PDFInfo
- Publication number
- CN215071660U CN215071660U CN202121308951.7U CN202121308951U CN215071660U CN 215071660 U CN215071660 U CN 215071660U CN 202121308951 U CN202121308951 U CN 202121308951U CN 215071660 U CN215071660 U CN 215071660U
- Authority
- CN
- China
- Prior art keywords
- voltage
- power supply
- gas turbine
- circuit breaker
- transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 107
- 238000002485 combustion reaction Methods 0.000 description 20
- 230000005611 electricity Effects 0.000 description 8
- 238000012544 monitoring process Methods 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
Landscapes
- Control Of Eletrric Generators (AREA)
Abstract
The utility model provides a multi-path power supply system of a combined cycle unit, which comprises a gas turbine unit power supply, a gas turbine unit power supply and a quick switching device; the power supplies of the two units respectively comprise a power grid high-voltage line, a main transformer, a generator, a high-voltage substation and an auxiliary bus, wherein the generator is connected into the power grid high-voltage line through a generator outlet circuit breaker, the main transformer and a main transformer high-voltage side circuit breaker in sequence; the auxiliary buses of the gas turbine unit power supply and the steam turbine unit power supply are electrically connected through a connecting wire, and a bus-tie breaker and a voltage transformer are arranged between the auxiliary buses of the two unit power supplies; all the voltage transformers and all the circuit breakers are connected with the quick switching device. The utility model is used for increase the power supply reliability.
Description
Technical Field
The utility model relates to a power station field, concretely relates to combined cycle unit multichannel power supply system.
Background
In the field of power stations, isolated island operation is common. The islanding operation is that the generator is separated from the power grid to be responsible for the use of peripheral loads, namely, the generator is not supported and is a relatively unstable power grid, once the generator fails (namely, the islanding operation fails), the power grid cannot recover power supply to provide reliable power supply, so that the power interruption of the whole plant is caused, and the great threat to the production of a power plant is formed.
SUMMERY OF THE UTILITY MODEL
The above-mentioned not enough to prior art, the utility model provides a combined cycle unit multichannel power supply system for increase the power supply reliability.
The utility model provides a multi-path power supply system of a combined cycle unit, which comprises a gas turbine unit power supply, a gas turbine unit power supply and a quick switching device;
the gas turbine unit power supply and the steam turbine unit power supply respectively comprise a power grid high-voltage line, a main transformer, a generator, a high-voltage plant transformer and an auxiliary bus, wherein the generator is connected to the power grid high-voltage line sequentially through a generator outlet circuit breaker, the main transformer and a main transformer high-voltage side circuit breaker;
the gas turbine unit power supply and the service bus of the steam turbine unit power supply are connected through a bus connection breaker, and a service bus side voltage transformer is arranged;
each voltage transformer is in signal connection with the fast switching device; and the control and signal wiring of the bus-tie circuit breaker, the main transformer high-voltage side circuit breakers, the generator outlet circuit breaker and the incoming line circuit breaker are all introduced into the quick switching device.
Further, the generator of the power supply of the gas turbine unit adopts a gas turbine generator, and the generator of the power supply of the gas turbine unit adopts a steam turbine generator.
Furthermore, the power grid high-voltage line of the power supply of the gas turbine unit and the power grid high-voltage line of the power supply of the gas turbine unit adopt different power grid high-voltage lines.
Furthermore, the bus coupler circuit breaker, each generator outlet circuit breaker, each main transformer high-voltage side circuit breaker, each generator outlet circuit breaker and each incoming line circuit breaker all have an automatic open-close position state feedback function.
Further, a voltage transformer is arranged on the low-voltage side of the main transformer and the low-voltage side of the high-voltage plant transformer; and the voltage transformers arranged on the main transformer side and the low-voltage side of the high-plant transformer of the power supply of the gas turbine unit and the voltage transformers arranged on the low-voltage side of the high-plant transformer of the power supply of the gas turbine unit are in signal connection with the quick switching device.
Furthermore, the quick-cutting device is internally provided with a communication module for uploading detection signals of all voltage transformers connected with the quick-cutting device in real time.
The utility model has the advantages that,
(1) the utility model provides a combined cycle unit multichannel power supply system for the gas turbine generator gets into island operation and after island operation failure with the electric wire netting separation, help the gas turbine generator to restore when normal at gas turbine side electric wire netting high-tension line, fast and gas turbine side electric wire netting high-tension line side by side moves and provides the power supply for the unit, helps improving the stability of factory unit power supply to a certain extent.
(2) The utility model provides a combined cycle unit multichannel power supply system, at the built-in communication module of fast cutting device, help uploading each voltage transformer's of the fast cutting device of access detection signal to surveillance center in real time, help realizing the remote monitoring to the power switch, and then help further guaranteeing the stability of power supply and the security of power consumption.
Furthermore, the utility model relates to a principle is reliable, though simple structure, nevertheless has very extensive application prospect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic circuit diagram of an apparatus according to an embodiment of the present invention.
Wherein 100, a gas turbine unit power supply, 101, a gas turbine side power grid high-voltage line, 102, a gas turbine side first voltage transformer, 103, a first main transformer high-voltage side circuit breaker, 104, a gas turbine side main transformer, 105, a gas turbine side second voltage transformer, 106, a gas turbine side generator outlet circuit breaker, 107, a gas turbine generator, 108, a gas turbine side high-voltage line, 109, a gas turbine side third voltage transformer, 110, a gas turbine side service bus incoming line circuit breaker, 111, a gas turbine side service bus, 200, a steam turbine unit power supply, 201, a steam turbine side power grid high-voltage line, 202, a steam turbine side first voltage transformer, 203, a second main transformer high-voltage side circuit breaker, 204, a steam turbine side main transformer, 205, a steam turbine side second voltage transformer, 206, a steam turbine side generator outlet circuit breaker, 207, a steam turbine generator, 208, a steam turbine side high-voltage transformer, 209, a steam turbine side third voltage transformer, 210, a steam turbine side service bus incoming line breaker, 211. steam turbine side station service bus 300, cut device soon, 400, bus tie circuit breaker, 500, station service bus side voltage transformer.
Detailed Description
In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
Fig. 1 is a schematic circuit diagram of an apparatus according to an embodiment of the present invention.
As shown in fig. 1, the multi-power supply system of the combined cycle unit includes a fast switching device 300 and two house service unit power supplies. The two paths of factory unit power supplies are a gas turbine unit power supply 100 and a steam turbine unit power supply 200. The gas turbine unit power supply 100 and the steam turbine unit power supply 200 both comprise a power grid high-voltage line, a main transformer, a generator, a high-voltage transformer and an auxiliary bus, wherein the generator is sequentially connected into the power grid high-voltage line through a generator outlet circuit breaker, the main transformer and a main transformer high-voltage side circuit breaker, the high-voltage side of the high-voltage transformer is connected between the generator outlet circuit breaker and the main transformer, the low-voltage side of the high-voltage transformer is connected with the auxiliary bus through an incoming line circuit breaker, and the high-voltage side of the main transformer is provided with a voltage transformer. The generator of the gas turbine unit power supply 100 adopts a gas turbine generator 107, and the generator of the gas turbine unit power supply 200 adopts a turbine generator 207. The high-voltage network lines of the gas turbine power supply 100 and the high-voltage network lines of the gas turbine power supply 200 are different. The bus coupler circuit breaker 400, each generator outlet circuit breaker, each main transformer high-voltage side circuit breaker, each generator outlet circuit breaker and each incoming line circuit breaker all have an automatic on-off position state feedback function.
In the present embodiment, as shown in fig. 1, the gas turbine unit power supply 100 includes a gas turbine side grid high-voltage line 101, a gas turbine side main transformer 104, a gas turbine generator 107, a gas turbine side plant transformer 108 and a gas turbine side plant power bus 111, the gas turbine generator 107 is connected to a gas turbine side power grid high-voltage line 101 through a gas turbine generator outlet circuit breaker 106, a gas turbine side main transformer 104 and a first main transformer high-voltage side circuit breaker 103 in sequence, the high-voltage side of a gas turbine side high-voltage station transformer 108 is connected between the gas turbine generator outlet circuit breaker 106 and the low-voltage side of the gas turbine side main transformer 104, the low-voltage side of the gas turbine side high-voltage station transformer 108 is connected with a gas turbine side station bus 111 through a gas turbine side station bus incoming circuit breaker 110, a first voltage transformer 102 is arranged on the high-voltage side of the gas turbine side main transformer 104, a gas turbine side second voltage transformer 105 is arranged on the low-voltage side of the gas turbine side main transformer 104, and a gas turbine side third voltage transformer 109 is arranged on the low-voltage side of the gas turbine side high-voltage station transformer 108.
In the present embodiment, as shown in fig. 1, the power supply 200 of the steam turbine unit includes a high-voltage line 201 of a steam turbine side power grid, a main transformer 204 of the steam turbine side, a steam turbine generator 207, a high-voltage plant transformer 208 of the steam turbine side, and a service bus 211 of the steam turbine side, the steam turbine generator 207 is connected to a steam turbine side power grid high-voltage line 201 through a steam turbine generator outlet circuit breaker 206, a steam turbine side main transformer 204 and a second main transformer high-voltage side circuit breaker 203 in sequence, the high-voltage side of the steam turbine side main transformer 208 is connected between the steam turbine generator outlet circuit breaker 206 and the low-voltage side of the steam turbine side main transformer 204, the low-voltage side of the steam turbine side main transformer 208 is connected with a steam turbine side plant bus 211 through a steam turbine side plant bus incoming line circuit breaker 210, a first voltage transformer 202 is arranged on the high-voltage side of the steam turbine side main transformer 204, a steam turbine side second voltage transformer 205 is arranged on the low-voltage side of the steam turbine side main transformer 204, and a steam turbine side third voltage transformer 209 is arranged on the low-voltage side of the steam turbine side plant transformer 208.
In the present embodiment, as shown in fig. 1, the combustion engine-side service bus 111 and the steam turbine-side service bus 211 are electrically connected by a connecting line, and a bus tie breaker 400 and a service bus-side voltage transformer 500 are provided on the connecting line between the combustion engine-side service bus 111 and the steam turbine-side service bus 211. The first voltage transformer 102 on the side of the combustion engine, the second voltage transformer 105 on the side of the combustion engine, the third voltage transformer 109 on the side of the combustion engine, the third voltage transformer 209 on the side of the steam turbine and the voltage transformer 500 on the side of the service power bus are in signal connection with the fast switching device 300.
The control and signal wiring of the bus tie circuit breaker 400, the first main transformer high-voltage side circuit breaker 103, the gas turbine side generator outlet circuit breaker 106, the gas turbine side service bus incoming line circuit breaker 110 and the steam turbine side service bus incoming line circuit breaker 210 are all led into the fast switching device 300.
The bus coupler circuit breaker 400, the first main transformer high-voltage side circuit breaker 103, the gas turbine side generator outlet circuit breaker 106, the gas turbine side service bus incoming line circuit breaker 110 and the steam turbine side service bus incoming line circuit breaker 210 are in signal connection with the fast switching device 300 through respective signal wiring respectively, and are in electric control connection with the fast switching device 300 through respective control wiring respectively.
Specifically, the bus tie circuit breaker 400, the first main transformer high-voltage side circuit breaker 103, the gas turbine side generator outlet circuit breaker 106, the gas turbine side service bus incoming line circuit breaker 110, and the steam turbine side service bus incoming line circuit breaker 210 all feed back the switching-on/off position state to the fast switching device 300 in real time through respective signal wiring. The fast switching device 300 can correspondingly control the opening and closing states of the bus coupler circuit breaker 400, the first main transformer high-voltage side circuit breaker 103, the gas turbine side generator outlet circuit breaker 106, the gas turbine side service bus incoming line circuit breaker 110 and the steam turbine side service bus incoming line circuit breaker 210 through each related control connection wire, and then quickly control the on-off of each related circuit.
The steam turbine side service bus 211 and the combustion engine side service bus 111 adopt different power grid high-voltage lines.
The first voltage transformer 102 on the combustion engine side, the second voltage transformer 105 on the combustion engine side, the third voltage transformer 109 on the combustion engine side, the third voltage transformer 209 on the steam turbine side and the voltage transformer 500 on the station power bus side are respectively used for detecting the voltage on the circuit where each is located and outputting the level signal corresponding to the detection result to the fast switching device 300 so as to obtain the voltage signal on each relevant line in time. For example, the first voltage transformer 102 on the gas turbine side is used to detect the voltage on the connection line between the high-voltage grid line 101 on the gas turbine side and the high-voltage side of the main transformer 104 on the gas turbine side, and to output a level signal corresponding to the detection result to the quick-switching device 300. The first voltage transformer 102 outputs high level, there is electricity, otherwise there is no electricity.
In a specific implementation, the quick switching device 300 may determine whether there is electricity in the grid high-voltage line 101 based on the on/off state of the first main-transformer high-voltage side circuit breaker 103 and based on the level of the output level of the first voltage transformer 102 on the side of the fuel gas. When the first main transformer high-voltage side circuit breaker 103 is in a closed state and the output level of the first voltage transformer 102 on the gas turbine side is high level, determining that electricity exists in the power grid high-voltage line 101; when the first main transformer high-voltage side circuit breaker 103 is in an on state and the output level of the first voltage transformer 102 on the combustion engine side is a low level, it is determined that the power failure occurs in the combustion engine side grid high-voltage line 101.
When the concrete implementation is realized, there can be:
when the gas turbine power supply 100 and the gas turbine power supply 200 are operating normally and there is power in the gas turbine-side grid high-voltage line 101, the following aspects can be performed by the quick-switching device 300:
1) and controlling the bus tie breaker 400 to be in the branch position.
2) And controlling a first main transformer high-voltage side circuit breaker 103, a gas turbine generator outlet circuit breaker 106 and a gas turbine side service bus incoming line circuit breaker 110 to be in a closed position.
3) And controlling a second main transformer high-voltage side circuit breaker 203, a turbo generator outlet circuit breaker 206 and a steam turbine side service bus incoming line circuit breaker 210 to be in a closed position.
4) And monitoring whether the power failure occurs in the power grid high-voltage line 101 in real time based on the on-off state of the first main transformer high-voltage side circuit breaker 103 and the output level of the first voltage transformer 102 on the fuel side.
When the gas turbine unit power supply 100 and the steam turbine unit power supply 200 work normally and the gas turbine side power grid high-voltage line 101 and the steam turbine side power grid high-voltage line 201 both have electricity, the gas turbine side service bus 111 is supplied with electricity in parallel by the gas turbine generator 107 and the gas turbine side power grid high-voltage line 101, and the steam turbine side service bus 211 is supplied with electricity in parallel by the steam turbine generator 207 and the steam turbine side power grid high-voltage line 201. Specifically, the method comprises the following steps: the gas turbine generator 107 supplies power to the gas turbine side service bus 111 by using the gas turbine side high-voltage substation 108, and the gas turbine side power grid high-voltage line 101 supplies power to the gas turbine side service bus 111 by using the gas turbine side main transformer 104 and the gas turbine side high-voltage substation 108; the steam turbine generator 207 supplies power to the steam turbine side service bus 211 by using the steam turbine side plant transformer 208, and the steam turbine side power grid high-voltage line 201 supplies power to the steam turbine side service bus 211 by using the steam turbine side main transformer 204 and the steam turbine side plant transformer 208. The turbine-side service bus 211 and the combustion engine-side service bus 111 are used to supply service power.
When the power failure occurs in the high-voltage line 101 of the power grid on the side of the combustion engine, the following regulation and control can be rapidly executed through the fast switching device 300, so that the combustion engine generator 107 enters the island operation:
1) and controlling the first main transformer high-voltage side circuit breaker 103 to be in an open position (namely, disconnected), and controlling the gas turbine generator outlet circuit breaker 106, the gas turbine side service bus incoming line circuit breaker 110 and the bus coupler circuit breaker 400 to be in a closed position.
2) And controlling the steam generator side generator outlet circuit breaker 206 and the steam generator side service bus incoming line circuit breaker 210 to be positioned separately.
At this time, the service bus 111 operates with the service bus 211.
It should be noted that the steam turbine generator 207 may be automatically controlled to stop by an external control circuit when the high-voltage line 101 of the combustion engine-side grid is disconnected.
And thirdly, after the gas turbine generator 107 enters the island operation, the quick switching device 300 can monitor whether the island operation of the gas turbine generator 107 fails or not in real time through the on-off position state of the gas turbine generator outlet circuit breaker 106 and the on-off position state of the gas turbine side service bus incoming line circuit breaker 110, and determines that the island operation of the gas turbine generator 107 fails when the gas turbine generator outlet circuit breaker 106 and the gas turbine side service bus incoming line circuit breaker 110 are both fed back to be in the off-position state.
And (IV) after the combustion engine generator 107 islanding operation fails, the quick switching device 300 can monitor whether electricity exists in the combustion engine side power grid high-voltage line 101 in real time based on the on-off state of the first main transformer high-voltage side circuit breaker 103 and the output level of the first combustion engine side voltage transformer 102. When the first main transformer high-voltage side circuit breaker 103 is in the separated state and the level of the output of the first voltage transformer 102 on the combustion engine side is high level, it is determined that there is power in the combustion engine side grid high-voltage line 101 (that is, power supply has been restored).
(V) after the fast switching device 300 monitors that the high-voltage line 101 of the gas turbine side power grid is powered back, whether the voltage exists in the fuel side service bus 111 or not can be detected through the voltage transformer 500, whether the outlet circuit breaker 106 of the gas turbine generator, the inlet circuit breaker 110 of the gas turbine side service bus and the inlet circuit breaker 210 of the steam turbine side service bus are in the off position (namely whether the outlet circuit breaker 106 of the gas turbine generator, the inlet circuit breaker 110 of the gas turbine side service bus and the inlet circuit breaker 210 of the steam turbine side service bus are in the off position or not and whether the bus-coupled circuit breaker 400 is in the on position or not can be confirmed through the on-off state information fed back by the gas turbine generator outlet circuit breaker 106, the inlet circuit breaker 110 of the gas turbine side service bus and the inlet circuit breaker 210 of the steam turbine side service bus and the bus circuit breaker 400 of the bus is in the on position, if the outlet circuit breaker 106 of the gas turbine generator, the inlet circuit breaker 110 of the gas turbine side service bus and the inlet circuit breaker 400 of the steam turbine side service bus are in the on position or not can be confirmed, first, the first main transformer high-voltage side circuit breaker 103 and the gas turbine side service incoming line circuit breaker 110 are both switched to the closed state, and then the gas turbine side generator outlet circuit breaker 106 and the gas turbine side service bus incoming line circuit breaker 110 are switched to the closed state and the bus coupler circuit breaker 400 is switched to the separated state.
At the moment, the gas turbine generator can rapidly run in parallel with the power grid to supply power to the unit when the power grid is recovered to be normal, and the stability of power supply is improved to a certain extent.
The use of the second voltage transformer 105 on the gas engine side, the third voltage transformer 109 on the gas engine side, the third voltage transformer 209 on the steam turbine side, and the second voltage transformer 205 on the steam turbine side is helpful to monitor the voltage magnitude on each relevant line in time to some extent, so as to help ensure the stability and safety of power supply to some extent.
Optionally, as another embodiment of the present invention, the fast switching device 300 is provided with a built-in communication module for uploading the detection signal of each voltage transformer in the system in real time. During the concrete implementation, the detection signal that inserts each voltage transformer of cutting device 300 soon in the system is uploaded in real time to the surveillance center to device 300 accessible communication module, helps realizing the remote monitoring to the power switching, and then helps further to ensure the stability of power supply and the security of power consumption.
The same and similar parts in the various embodiments in this specification may be referred to each other. Although the present invention has been described in detail by referring to the drawings in conjunction with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and substance of the present invention, and these modifications or substitutions are intended to be within the scope of the present invention/any person skilled in the art can easily conceive of changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. A multi-power supply system of a combined cycle unit is characterized by comprising a gas turbine unit power supply (100), a steam turbine unit power supply (200) and a quick switching device (300);
the gas turbine unit power supply and the steam turbine unit power supply respectively comprise a power grid high-voltage line, a main transformer, a generator, a high-voltage plant transformer and an auxiliary bus, wherein the generator is connected to the power grid high-voltage line sequentially through a generator outlet circuit breaker, the main transformer and a main transformer high-voltage side circuit breaker;
a voltage transformer (500) at the side of the station electric bus is connected and arranged between the station electric bus of the gas turbine unit power supply and the station electric bus of the steam turbine unit power supply through a bus interconnection breaker (400);
each voltage transformer is in signal connection with the fast switching device (300); the control and signal wiring of the bus tie circuit breaker (400) and the high-voltage side circuit breakers of all main transformers, the generator outlet circuit breaker and the incoming line circuit breaker are all led into the quick switching device (300).
2. The combined cycle unit multi-power supply system according to claim 1, wherein the generator of the gas turbine unit power supply (100) is a gas turbine generator, and the generator of the steam turbine unit power supply (200) is a steam turbine generator.
3. The combined cycle plant multiple power supply system according to claim 1, wherein the high-voltage power grid line of the gas turbine plant power supply (100) and the high-voltage power grid line of the gas turbine plant power supply (200) are different.
4. The combined cycle unit multi-channel power supply system according to claim 1, 2 or 3, wherein the bus tie circuit breaker (400), each generator outlet circuit breaker, each main transformer high-voltage side circuit breaker, each generator outlet circuit breaker and each incoming line circuit breaker have an automatic feedback function of on-off position state.
5. The combined cycle unit multi-channel power supply system according to claim 1, 2 or 3, wherein a voltage transformer is arranged on the low-voltage side of the main transformer and a voltage transformer is arranged on the low-voltage side of the high-voltage plant transformer; and voltage transformers arranged on the main transformer side and the low-voltage side of the high-plant transformer of the power supply of the gas turbine unit and voltage transformers arranged on the low-voltage side of the high-plant transformer of the power supply (200) of the gas turbine unit are in signal connection with the quick switching device (300).
6. The combined cycle unit multi-power supply system according to claim 5, wherein the fast switching device (300) is provided with a communication module therein, and is used for uploading detection signals of each voltage transformer connected with the fast switching device (300) in real time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121308951.7U CN215071660U (en) | 2021-06-10 | 2021-06-10 | Multi-channel power supply system of combined cycle unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121308951.7U CN215071660U (en) | 2021-06-10 | 2021-06-10 | Multi-channel power supply system of combined cycle unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215071660U true CN215071660U (en) | 2021-12-07 |
Family
ID=79205699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121308951.7U Active CN215071660U (en) | 2021-06-10 | 2021-06-10 | Multi-channel power supply system of combined cycle unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215071660U (en) |
-
2021
- 2021-06-10 CN CN202121308951.7U patent/CN215071660U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105655879B (en) | The voltage arrangement of 110 kilovolts of system busbar combining unit duplicate system retrofits of intelligent substation double bus scheme mode | |
| CN110994693A (en) | Uninterrupted parallel operation grid-connected system and grid-connected method of medium-voltage power supply vehicle | |
| CN102790426A (en) | Improved spare power source automatic switch method for single bus sectionalized operation of power substation | |
| CN102545375B (en) | Automatic switching on/off method for emergency power supply of power plant | |
| CN108565974A (en) | One kind being based on the self-powered long-range failure protection method and system of protective device | |
| CN116260135A (en) | Rapid self-healing method for faults of power distribution network main line | |
| CN109038805B (en) | Method for realizing automatic switching between medium-voltage commercial power and diesel generator set | |
| JP2003087978A (en) | Generating unit, panel board and power supply system using the same | |
| CN110932254B (en) | Multiple redundant power supply control system and method | |
| CN105633917A (en) | Unified power flow controller-based fault processing method and system | |
| CN211377605U (en) | Uninterrupted parallel operation grid-connected system of medium-voltage power supply vehicle | |
| CN107910855B (en) | A kind of connection applied to intelligent substation cuts small power supply device | |
| JP2014050292A (en) | Distributed power supply system, and autonomous operation control device | |
| CN215071660U (en) | Multi-channel power supply system of combined cycle unit | |
| CN210724305U (en) | Fault guiding safety device, power utilization safety system, multi-path power utilization safety system and automatic bus transfer interlocking control system | |
| CN205583386U (en) | Voltage hardware connection of double configuration of bus merging unit for double bus connection in substation | |
| CN105449835A (en) | Regional spare power automatic switch method | |
| CN108565891A (en) | A kind of photovoltaic string formation cutoff device, method and photovoltaic system | |
| CN107591896A (en) | A kind of thermal power plant security personnel bussed supply power supply monitoring system | |
| JP4046674B2 (en) | Distribution system protection system | |
| CN112186888A (en) | Method for realizing mutual switching between commercial power and diesel power of data center | |
| CN112751333B (en) | Intelligent low-voltage switch cabinet for rail transit and control method | |
| CN114123131B (en) | Function optimization's quick cut system | |
| CN115483710B (en) | Distributed power grid-connected substation protection method and system for preventing unplanned island operation | |
| CN205647006U (en) | Extremely fast combined electrical apparatus that suits |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |