CN221282632U - Concentrated electric cabinet aiming at outlet side of generator in waste heat power generation engineering - Google Patents
Concentrated electric cabinet aiming at outlet side of generator in waste heat power generation engineering Download PDFInfo
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- CN221282632U CN221282632U CN202323141085.9U CN202323141085U CN221282632U CN 221282632 U CN221282632 U CN 221282632U CN 202323141085 U CN202323141085 U CN 202323141085U CN 221282632 U CN221282632 U CN 221282632U
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- 239000002918 waste heat Substances 0.000 title claims abstract description 21
- 238000010248 power generation Methods 0.000 title claims abstract description 18
- 230000005284 excitation Effects 0.000 claims abstract description 44
- 238000002955 isolation Methods 0.000 claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims abstract description 10
- 238000012423 maintenance Methods 0.000 claims abstract description 5
- 238000005259 measurement Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 7
- 230000001276 controlling effect Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 description 5
- 230000001360 synchronised effect Effects 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
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Abstract
The utility model discloses a centralized electric cabinet aiming at an outlet side of a generator in waste heat power generation engineering, which comprises the following components: the system comprises a generator distribution mechanism, a generator control mechanism, a maintenance channel and a remote generator monitoring end; the generator distribution mechanism comprises a generator isolation and excitation PT cabinet, a generator excitation transformer cabinet, a generator PT cabinet and a generator breaker cabinet; the generator distribution mechanism is respectively connected with the generator isolation PT cabinet, the generator excitation transformer cabinet, the generator PT cabinet and the generator breaker cabinet through buses; the generator isolation and excitation cabinet inputs electric energy generated by the generator into a bus through a first circuit; the bus generator electric energy is input to a generator breaker of a fourth circuit; the generator control mechanism is connected with the remote generator monitoring end through a wired network and a wireless network; the utility model solves the technical problem of unified management of different types of power supply equipment at the outlet side of the generator in the waste heat power generation engineering in the prior art.
Description
Technical Field
The utility model relates to the technical field of cement kiln waste heat power generation, in particular to a centralized electric cabinet aiming at a generator outlet side in waste heat power generation engineering.
Background
In the existing cement line waste heat power generation engineering, primary equipment on the outlet side of a generator is provided with primary equipment such as copper busbar, a generator isolation handcart, a generator CT, a generator PT, a generator excitation transformer, a generator breaker and the like. The secondary equipment of the generator comprises a generator relay protection device, a generator excitation adjusting device, a generator synchronization device, a generator measurement and control metering device and the like. The equipment is generally arranged in a small outlet room of a generator, a high-voltage power room, an electronic equipment room, a central control room and the like under a turbine island. In the conventional design, a generator metering and control screen and a synchronous screen are arranged in a central control room, a generator protection screen is arranged between electronic equipment, and a generator excitation condition screen is arranged between generator cells and is supplied by different manufacturers. All the devices are scattered, supplied by different factories, inconvenient to manage, and can finish related operation, maintenance and overhaul work by matching with a plurality of people, and meanwhile, the lengths of the primary cable and the secondary cable which are connected are longer, so that all the devices are required to be wired and debugged after being installed on site, and the method is time-consuming, labor-consuming and capital-consuming. The design of the outgoing line cabinet of the generator centralizes all secondary equipment of the generator, and the secondary equipment is designed and supplied by the same manufacturer, so that the installation and debugging are finished before leaving the factory, the construction period is saved, and the accuracy of the installation and debugging is improved.
Disclosure of utility model
In order to solve the problems in the prior art, the utility model provides an electrical cabinet applied to the outlet side of a generator in cement line waste heat power generation engineering, which solves the technical problem that in the prior art, the types of power supply equipment on the outlet side of the generator in the waste heat power generation engineering are different, and the centralized management of equipment of different types is difficult.
The utility model is implemented by adopting the following technical scheme:
A centralized electrical cabinet for a generator outlet side in waste heat power generation engineering, the cabinet comprising: generator distribution mechanism, generator control mechanism, maintenance passageway and remote generator monitor end: wherein:
The generator distribution mechanism comprises a generator isolation and excitation PT cabinet, a generator excitation transformer cabinet, a generator PT cabinet and a generator breaker cabinet; the generator distribution mechanism is respectively isolated from the generator through a bus, and comprises an excitation PT cabinet, a generator excitation transformer cabinet, a generator PT cabinet and a generator breaker cabinet; a first circuit is arranged in the generator isolation and excitation PT cabinet; the generator excitation transformer cabinet is provided with a second circuit; the generator PT cabinet is provided with a third circuit; the generator breaker cabinet is provided with a fourth circuit; wherein:
the first circuit is connected in series with a first current transformer, a second current transformer and an isolator; and the first fuse and the generator excitation PT are connected in parallel; the first circuit is used for maintaining and safely isolating the waste heat equipment; the second circuit is connected with a second fuse in series; the third circuit is connected in series with a third fuse, a third voltage transformer and a lightning arrester in parallel; the fourth circuit is connected in series with a third current transformer, a fourth current transformer and a circuit breaker; and a fourth fuse and a line voltage transformer are connected in parallel; wherein:
The generator isolation and excitation cabinet inputs generator electric energy into a bus through a first circuit; the bus inputs generator electric energy to a generator breaker of the fourth circuit; the fourth circuit transmits the electric energy to the equipment bus needing electricity through the cable after passing through the third current transformer and the fourth current transformer, so that the transmission of the electric energy is completed; the circuit breaker of the fourth circuit is used for controlling the current switching of the generator during normal and fault conditions, and meanwhile, the voltage measurement of the line is judged through a voltage transformer connected in parallel with the circuit breaker;
the second circuit and the third circuit are used for providing excitation energy of the generator and running voltage measurement of the generator;
The generator control mechanism is connected with the remote generator monitoring end through a wired network and a wireless network.
Further, the generator control mechanism comprises a generator control mechanism cabinet, a generator synchronous cabinet, a generator relay protection cabinet and generator excitation adjustment; wherein:
The generator control cabinet is used for monitoring the working state of the generator and controlling the opening and closing of the generator circuit breaker;
The synchronous cabinet of the generator is used for monitoring and comparing the difference of electric energy signals at two sides of the circuit breaker of the generator, and sending a closing command under the condition of allowing conditions to allow the circuit breaker of the generator to be closed and connected;
the generator relay protection device comprises: and by measuring the related electric quantity and the non-electric quantity of the generator, judging whether the generator is in a safe operation state, sending out alarm and tripping information in time, and recording and analyzing fault conditions.
Further, the concentrated electric cabinet at the outlet side of the generator is provided with an air inlet and an air outlet; the air inlet adopts a shutter structure.
Advantageous effects
According to the utility model, through centralized management of power supply equipment of different types of generators in waste heat power generation engineering, integrated design of equipment is realized, manufacturing and debugging reliability of a factory is improved, on-site quick installation is realized, construction period is saved, cost is saved, and joint debugging work is avoided.
According to the utility model, the integrated box body of the generator is designed, so that workload of civil engineering, installation and debugging is greatly reduced, and meanwhile, the purchase cost of equipment is also reduced; meanwhile, the installation position is flexible, and the device can be installed on a steam turbine generator platform, can also be installed in a power room or even outdoors.
Drawings
Fig. 1 is a schematic structural view of a centralized electrical cabinet for the outlet side of a generator in waste heat power generation engineering according to the present utility model.
Fig. 2 is a schematic circuit diagram of a medium generator equipped mechanism of a centralized electrical cabinet for the outlet side of a generator in waste heat power generation engineering.
Fig. 3 is a transmission structure diagram of a generator control mechanism for a concentrated electric cabinet on an outlet side of a generator in a waste heat power generation project.
Detailed Description
The technical scheme of the utility model is further described below with reference to fig. 1-3.
As shown in fig. 1 and 2, the present utility model provides a centralized electrical cabinet for an outlet side of a generator in a waste heat power generation project, where the cabinet 500 includes: generator power distribution mechanism 100, generator control mechanism 200, maintenance channel 300, and remote generator monitor terminal 400: the concentrated electric cabinet 500 at the outlet side of the generator is provided with an air inlet and an air outlet; the air inlet adopts a shutter structure.
The generator equipment mechanism 100 comprises a generator isolation and excitation PT cabinet 101, a generator excitation transformer cabinet 102, a generator PT cabinet 103 and a generator breaker cabinet 104; the generator equipment mechanism 100 is respectively isolated from a generator, an excitation PT cabinet 101, a generator excitation transformer cabinet 102, a generator PT cabinet 103 and a generator breaker cabinet 104 through a bus 105; a first circuit 101A is arranged in the generator isolation and excitation PT cabinet 101; the generator exciting transformer cabinet 102 is provided with a second circuit 102A; the generator PT cabinet 103 is provided with a third circuit 103A; the generator breaker 104 cabinet is provided with a third circuit 104A; wherein:
The first circuit 101A is connected in series with a first current transformer, a second current transformer and an isolator; and the first fuse and the generator excitation PT are connected in parallel; the first circuit is used for maintaining and safely isolating the waste heat equipment;
The second circuit 102A is connected in series with a second fuse;
the third circuit 103A is connected in series with a third fuse, a third voltage transformer and a lightning arrester in parallel;
the fourth circuit 104A is connected in series with a third transformer, a fourth transformer and a circuit breaker; and a fourth fuse and a line voltage transformer are connected in parallel; wherein:
The generator isolation and excitation PT cabinet 101 inputs the generator into a bus through a first circuit 101A; the bus generator power will be input to the generator breaker of the fourth circuit 104A; the fourth circuit 104A is configured to break the current during normal operation and fault operation of the generator, where: the fourth circuit 104A sends the electric energy to the equipment bus needing electricity through the cable after passing through the third current transformer and the fourth current transformer, so as to complete the transmission of the electric energy; at this time, the fourth circuit is used for differential protection of the generator, and the protection of internal short-circuit faults of the generator is realized by comparing the currents of the outgoing line and the neutral point of the generator; the circuit breaker of the fourth circuit is used for controlling the current switching of the generator during normal and fault conditions, and meanwhile, the voltage measurement of the line is judged through a voltage transformer connected in parallel with the circuit breaker; at this time, the fourth circuit is used for measuring the voltage of the line, so that the voltage of the line is compared with the voltage of the generator, and the synchronous closing of the generator circuit breaker is realized after the voltage is input into the synchronous device.
The second circuit 102A and the third circuit 103A are used for measuring the excitation energy of the generator and the running voltage of the generator;
The generator control mechanism 200 is connected to the remote generator monitor 400 via a wired and wireless network. The specific process comprises the following steps:
After entering the cabinet through the outgoing cable, the electric energy generated by the generator enters the generator isolation and excitation PT cabinet 101, is connected to the lower part of the isolation switch (the isolation switch plays a role in safety isolation when overhauling equipment) through the zero sequence CT and the measurement protection CT in the cabinet, enters the generator end bus 105 after passing through the isolation switch, enters the generator breaker cabinet 104 through the generator end bus 105 and is connected to the generator breaker (the generator breaker plays a role in breaking the current when the generator normally runs and fails), and two loop cabinets are arranged between the generator isolation and excitation PT cabinet 101 and the generator breaker cabinet 104, namely the generator excitation transformer cabinet 102 and the generator PT cabinet 103. The generator excitation transformer cabinet 102 and the generator PT cabinet 103 provide excitation energy required by the generator and an operating voltage measurement of the generator.
As shown in fig. 1 and 3, the generator control mechanism 200 includes a generator relay protection device 201, a generator synchronization device 202, a generator measurement and control and metering device 203, and a generator excitation adjustment device 204; the generator control mechanism 200 is designed specifically according to different types of generators, corresponding to different control requirements of the generators. The generator relay protection device 201 is specially designed according to the type and capacity of the generator corresponding to national standard or IEC standard, the generator synchronization device 202 adopts a point automatic quasi-synchronization system, the generator excitation regulating device 204 adopts a design suitable for the type of the generator, and the generator measurement and metering 203 is realized by selecting equipment meeting the requirements of precision and environment. The generator control mechanism realizes the guarantee of the normal operation of the generator, and simultaneously can lead the generator to be separated from the power grid in time when the generator fails, so as to maintain the safety of the generator and the power grid. Wherein:
Generator relay protection device 201: comprises a comprehensive protection device of a generator and communication equipment. The method has the main functions of judging whether the generator is in a safe operation state or not through measuring the related electric quantity and the non-electric quantity of the generator, sending out alarm and tripping information in time, and recording and analyzing fault conditions.
Generator synchronization device 202: the method mainly aims at monitoring and comparing the difference of the electric energy signals at two sides of the generator circuit breaker, and sending a closing command under the condition of allowing conditions to allow the generator circuit breaker to be closed and connected.
Generator measurement and control and metering device 203: comprises a multifunctional electric power instrument, an electric energy meter, a generator control switch, a button indicator lamp and the like. The method is mainly used for monitoring important parameters such as voltage, current, frequency, power and the like of the generator and simultaneously controlling opening and closing of a circuit breaker of the generator.
Generator excitation adjustment device 204: the main function is to apply the exciting current required by the generator according to the operation state of the generator.
It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (3)
1. The utility model provides a concentrated electric cabinet to generator outgoing line side in waste heat power generation engineering, its characterized in that includes in the cabinet: generator distribution mechanism, generator control mechanism, maintenance passageway and remote generator monitor end: wherein:
The generator distribution mechanism comprises a generator isolation and excitation PT cabinet, a generator excitation transformer cabinet, a generator PT cabinet and a generator breaker cabinet; the generator distribution mechanism is respectively connected with a generator isolation PT cabinet, a generator excitation transformer cabinet, a generator PT cabinet and a generator breaker cabinet through buses; a first circuit is arranged in the generator isolation and excitation PT cabinet; the generator excitation transformer cabinet is provided with a second circuit; the generator PT cabinet is provided with a third circuit; the generator breaker cabinet is provided with a fourth circuit; wherein:
The first circuit is connected in series with a first current transformer, a second current transformer and an isolator; and the first fuse and the generator excitation PT are connected in parallel; the first circuit is used for maintaining and safely isolating the waste heat equipment; the second circuit is connected with a second fuse in series; the third circuit is connected in series with a third fuse, a third voltage transformer and a lightning arrester in parallel; the fourth circuit is connected with a third current transformer, a fourth current transformer, a circuit breaker and a voltage transformer in series; and a fourth fuse and a line voltage transformer are connected in parallel; wherein:
The generator isolation and excitation cabinet inputs generator electric energy into a bus through a first circuit; the bus inputs generator electric energy to a generator breaker of the fourth circuit; the fourth circuit transmits the electric energy to the equipment bus needing electricity through the cable after passing through the third current transformer and the fourth current transformer, so that the transmission of the electric energy is completed; the circuit breaker of the fourth circuit is used for controlling the current switching of the generator during normal and fault conditions, and meanwhile, the voltage measurement of the line is judged through a voltage transformer connected in parallel with the circuit breaker;
the second circuit and the third circuit are used for providing excitation energy of the generator and running voltage measurement of the generator;
The generator control mechanism is connected with the remote generator monitoring end through a wired network and a wireless network.
2. The concentrated electric cabinet for the outlet side of a generator in waste heat power generation engineering according to claim 1, wherein the generator control mechanism comprises a generator relay protection device, a generator synchronization device, a generator excitation regulating device and a generator measurement and control and metering device; wherein:
The power generator measurement and control and metering device comprises: the device is used for monitoring important parameters of the generator and simultaneously controlling opening and closing of a circuit breaker of the generator;
the generator synchronization device comprises: the method comprises the steps of monitoring and comparing the difference of electric energy signals at two sides of a generator breaker, and sending a closing command under the condition of permission of conditions to allow the generator breaker to be closed and connected;
The generator relay protection device comprises: the method is used for measuring the related electric quantity and the non-electric quantity of the generator, judging whether the generator is in a safe operation state, timely sending out alarm and tripping information, and recording and analyzing fault conditions;
the generator excitation adjusting device comprises: for regulating the excitation current required by the running state of the generator.
3. The concentrated electric cabinet for the outlet side of a generator in a waste heat power generation project according to claim 1, wherein the concentrated electric cabinet for the outlet side of the generator is provided with an air inlet and an air outlet; the air inlet adopts a shutter structure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2023225524138 | 2023-09-20 | ||
| CN202322552413 | 2023-09-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221282632U true CN221282632U (en) | 2024-07-05 |
Family
ID=91701214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323141085.9U Active CN221282632U (en) | 2023-09-20 | 2023-11-21 | Concentrated electric cabinet aiming at outlet side of generator in waste heat power generation engineering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221282632U (en) |
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2023
- 2023-11-21 CN CN202323141085.9U patent/CN221282632U/en active Active
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