CN221328620U - Starting grid-connected control circuit of camera - Google Patents
Starting grid-connected control circuit of camera Download PDFInfo
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- CN221328620U CN221328620U CN202322701601.2U CN202322701601U CN221328620U CN 221328620 U CN221328620 U CN 221328620U CN 202322701601 U CN202322701601 U CN 202322701601U CN 221328620 U CN221328620 U CN 221328620U
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- 230000005284 excitation Effects 0.000 claims abstract description 144
- 230000008033 biological extinction Effects 0.000 claims description 18
- 101150042775 tyr1 gene Proteins 0.000 claims description 14
- 238000002955 isolation Methods 0.000 claims description 11
- 101100437155 Gallus gallus AVR2 gene Proteins 0.000 claims description 10
- 101150003970 Avr1 gene Proteins 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 4
- 230000009849 deactivation Effects 0.000 claims 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000001360 synchronised effect Effects 0.000 abstract description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 26
- 229910052710 silicon Inorganic materials 0.000 description 26
- 239000010703 silicon Substances 0.000 description 26
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The utility model discloses a starting grid-connected control circuit of a camera, and belongs to the technical field of power systems. The grid-connected switch comprises a grid-connected switch, wherein the input end of the grid-connected switch is electrically connected with a power grid, the output end of the grid-connected switch is connected with the input end of a main excitation transformer ET, the output end of the main excitation transformer ET is respectively connected with a stator of a phase-change memory and the input end of a main excitation control module in parallel, a rotor of the phase-change memory is respectively connected with the output end of the main excitation control module and the output end of a starting excitation control module in parallel, the input end of the starting excitation control module is electrically connected with a power supply for a plant, and the main excitation control module and the starting excitation control module are used for controlling the voltage of the phase-change memory so as to finish grid-connected operation of the phase-change memory. The utility model does not need to operate a switch to cooperate in the whole starting process of starting grid-connected operation of the camera, reduces excitation voltage-building time when the camera turns idle, ensures that a synchronous device has enough time to capture grid-connected points, and greatly improves the starting success rate of the unit.
Description
Technical Field
The utility model relates to the technical field of power systems, in particular to a starting grid-connected control circuit of a camera.
Background
The phase-change device is operated in a motor state, does not have mechanical load, is used for providing or absorbing reactive power for an electric power system, is used for improving the power factor of a power grid, maintaining the voltage level of the power grid, plays an increasingly important role in the power grid due to the fact that the phase-change device has strong reactive power supporting capability, good transient state and sub-transient state characteristics, and in recent years, with popularization and application of the phase-change device, the phase-change device excitation system is used as phase-change device core control equipment, and technical performance and control circuits of the phase-change device excitation system are continuously improved and perfected.
In the prior art, each camera excitation system is generally provided with a set of excitation regulation, silicon controlled rectifier rectifying, de-excitation and overvoltage protection equipment, the silicon controlled rectifier rectifying input is taken from two transformers, one group of transformers is connected to a factory AC380V to drag a camera to start with SFC, the other group of transformers is connected with a camera end of the self-adjusting camera, excitation current is provided for boosting, synchronous and grid-connected operation of the camera after the start is completed, the two transformer outputs are mutually locked through a circuit breaker and cannot be closed at the same time, and the two transformers are switched on and off as required in the process from the start to the grid connection.
The control circuit has simple design structure and relatively few devices, but has obvious defects, the excitation adjustment is firstly required to be adjusted according to different starting processes and corresponding control rules, and the excitation adjustment is relatively complex through control software, so that professional operators are required to operate; secondly, after the SFC drags the camera to reach 105% of rotation speed, the exciting transformer circuit breaker at the AC380V side of the factory is required to be disconnected, then the circuit breaker of the exciting transformer at the machine end can be closed, and then boosting, synchronous and grid-connected operation is completed.
Disclosure of utility model
The utility model aims to overcome the defects in the prior art and provide a starting grid-connected control circuit for a camera so as to solve the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a camera starts grid-connected control circuit, including grid-connected switch, its input electricity connects the electric wire netting, the input of main transformer ET is connected to its output, the output of main transformer ET is parallelly connected with the stator of camera and the input of main excitation control module respectively, the rotor of camera is parallelly connected with the output of main excitation control module and the output of starting excitation control module respectively, the input of starting excitation control module is connected with the factory power supply electricity, main excitation control module, starting excitation control module is used for controlling the voltage of camera, accomplish the camera and connect in net the operation.
Preferably, the motor further comprises a de-excitation and overvoltage protection module, wherein the input end of the de-excitation and overvoltage protection module is electrically connected with the rotor of the phase-change modulator, and the de-excitation and overvoltage protection module is respectively connected with the output end of the main excitation control module and the output end of the starting excitation control module in parallel.
Preferably, the main excitation control module includes a main excitation transformer ET1, an input end of the main excitation transformer ET1 is electrically connected with an output end of the main transformer ET1, an output end of the main excitation transformer ET1 is electrically connected with an input end of a main excitation thyristor rectifier cabinet TYR1, an output end of the main excitation thyristor rectifier cabinet TYR1 is electrically connected with an input end of a main excitation extinction switch MK1, an output end of the main excitation extinction switch MK1 is connected with an output end of the de-excitation and overvoltage protection module, and the main excitation thyristor rectifier cabinet TYR1 is controlled and connected with the main excitation control device AVR1.
Preferably, the starting excitation control module comprises a starting excitation transformer ET2, the input end of the starting excitation transformer ET2 is electrically connected with a power supply for a factory, the output end of the starting excitation transformer ET2 is electrically connected with the input end of a starting silicon controlled rectifier device TYR2, the output end of the starting silicon controlled rectifier device TYR2 is connected to the input end of a magnetic extinction switch MK2, the output end of the magnetic extinction switch MK2 is connected to the input end of an electric isolation switch DK1, the output end of the electric isolation switch DK1 is connected to the output end of a de-excitation and overvoltage protection module, and the starting silicon controlled rectifier device TYR2 is in control connection with the starting excitation control device AVR2.
Preferably, the primary excitation transformer ET1 adopts a ZLC-1000 type primary excitation transformer, the primary excitation thyristor rectifier cabinet TYR1 adopts a TYR1500 type primary excitation thyristor rectifier cabinet, and the primary excitation control device AVR1 adopts a GER3000 type primary excitation control device.
Preferably, the starting excitation transformer ET2 is a ZLC-50 type starting excitation transformer, the starting silicon controlled rectifier device TYR2 is a TYR300 type starting silicon controlled rectifier device, and the starting excitation control device AVR2 is a GER3000 type starting excitation control device.
Preferably, the main excitation magnetic switch MK1 is a Gerapid model 2607 magnetic switch.
Preferably, the magnetic extinction switch MK2 is a DMX2 type magnetic extinction switch, and the electric isolation switch DK1 is a SQGD type electric isolation switch.
The beneficial effects are that: the grid-connected switch is used for controlling the power supply of the power grid to be connected and electrified, the operation of the camera is realized under the mutual coordination of the main excitation control module and the starting excitation control module, when the camera is started, the output end of the main excitation control module is disconnected from the connection of the camera, the starting excitation control module is matched with the dragging system to drag the rotation speed of the camera to reach 105% of the rated rotation speed, when the dragging system is withdrawn, the output end of the main excitation control module is connected with the camera, the main excitation control module outputs the main excitation controlled silicon, the camera is automatically boosted, at the moment, the current of the starting excitation control module is completely transferred to the main excitation control module, after the synchronization of the synchronization device is completed, the output end of the starting excitation control module is disconnected from the camera, the starting synchronization operation of the camera is completed, the operation of the operation switch is not needed in the whole starting process, the excitation pressure-building time during the idle running of the camera is reduced, the synchronous device is ensured to have enough time to capture and the network point, and the starting success rate of the machine set is greatly improved.
Drawings
Fig. 1 is a control circuit diagram of the present utility model.
Detailed Description
Referring to fig. 1, the present utility model provides a technical solution: the grid-connected control circuit for starting the phase-change memory comprises a grid-connected switch, wherein the input end of the grid-connected switch is electrically connected with a power grid, the output end of the grid-connected switch is connected with the input end of a main transformer ET, the grid-connected switch controls the power-on control of the whole circuit, the output end of the main transformer ET is respectively connected with a stator of the phase-change memory and the input end of a main excitation control module in parallel, a rotor of the phase-change memory is electrically connected with the input end of a de-excitation and overvoltage protection module, the de-excitation and overvoltage protection module is respectively connected with the output end of the main excitation control module and the output end of the starting excitation control module in parallel, the phase-change memory is protected through the de-excitation and overvoltage protection module, the phase-change memory is prevented from being damaged due to overvoltage in the use process of the phase-change memory, and the de-excitation reliability is improved;
The input end of the starting excitation control module is electrically connected with a factory power supply, the main excitation control module and the starting excitation control module are used for controlling the voltage of the camera to finish the grid-connected operation of the camera, when the camera is started, the output end of the main excitation control module is disconnected with the camera, the starting excitation control module is matched with a dragging system to drag the rotation speed of the camera to reach 105% of the rated rotation speed, when the dragging system exits, the output end of the main excitation control module is connected with the camera, the main excitation control module outputs a main excitation silicon controlled rectifier, the camera is automatically boosted, at the moment, the current of the starting excitation control module is completely transferred to the main excitation control module, after grid connection is finished under the matching of a synchronous device, the output end of the starting excitation control module is disconnected with the camera to finish the grid-connected operation of the camera, the matching of an operation switch is not needed in the whole starting process, the excitation voltage-establishing time when the camera is idle running is reduced, the synchronous device has enough time to capture grid-connected points, and the starting success rate of the machine set is greatly improved.
In a further embodiment, the main excitation control module comprises a main excitation transformer ET1, a main excitation silicon controlled rectifier cabinet TYR1, a main excitation control device AVR1 and a main excitation vanishing switch MK1, wherein the main excitation transformer ET1 adopts a ZLC-1000 type main excitation transformer, the main excitation silicon controlled rectifier cabinet TYR1 adopts a TYR1500 type main excitation silicon controlled rectifier cabinet, the main excitation control device AVR1 adopts a GER3000 type main excitation control device, the main excitation switch MK1 adopts a Gerapid 2607 type vanishing switch, the input end of the main excitation transformer ET1 is electrically connected with the output end of the main excitation transformer ET, the output end of the main excitation transformer ET1 is electrically connected with the input end of the main excitation silicon controlled rectifier cabinet TYR1, the output end of the main excitation controlled silicon controlled rectifier cabinet TYR1 is electrically connected with the output end of the vanishing switch 1, the output end of the main excitation switch MK1 is connected with the output end of the vanishing and overvoltage protection module, the main excitation silicon controlled rectifier cabinet TYR1 is in control connection with a main excitation control device AVR1, the starting excitation control module comprises a starting excitation transformer ET2, a starting silicon controlled rectifier device TYR2, the starting excitation control device AVR2, a magnetic extinction switch MK2 and an electric isolation switch DK1, wherein the starting excitation transformer ET2 adopts a ZLC-50 type starting excitation transformer, the starting silicon controlled rectifier device TYR2 adopts a TYR300 type starting silicon controlled rectifier device, the starting excitation control device AVR2 adopts a GER3000 type starting excitation control device, the magnetic extinction switch MK2 adopts a DMX2 type magnetic extinction switch, the electric isolation switch DK1 adopts a SQGD type electric isolation switch, the input end of the starting excitation transformer ET2 is electrically connected with a factory power supply, the output end of the starting excitation transformer ET2 is electrically connected with the input end of the starting silicon controlled rectifier device TYR2, the output end of the starting silicon controlled rectifier TYR2 is connected to the input end of the magnetic extinction switch MK2, the output end of the magnetic extinction switch MK2 is connected to the input end of the electric isolating switch DK1, the output end of the electric isolating switch DK1 is connected to the output end of the de-excitation and overvoltage protection module, and the starting silicon controlled rectifier TYR2 is in control connection with the starting excitation control device AVR2.
When the camera is started, the main excitation extinction switch MK1 is switched off, the extinction switch MK2 and the electric isolating switch DK1 are switched on, the starting excitation control device AVR2 controls the starting current output by the starting silicon controlled rectifier device TYR2 to match with a dragging system to drag the camera to 105% of rated rotation speed, when the dragging system exits, the main excitation extinction switch MK1 is switched on, the main excitation control device AVR1 controls the output of the main excitation silicon controlled rectifier cabinet TYR1, the starting excitation control device AVR2 controls the starting silicon controlled rectifier device TYR2 to output, the camera is automatically boosted, due to the single-phase conduction characteristic of the silicon controlled rectifier, the current of the starting excitation control device AVR2 is completely transferred to the starting silicon controlled rectifier device TYR2, after the synchronization device is matched, the electric isolating switch DK1 is tripped, the synchronization operation of the camera is completed, the operation of the synchronization operation of the camera is not needed in the whole starting process, the idle time of the camera is reduced, the sufficient time of capturing the synchronization device is ensured, and the success rate of the machine set is greatly improved.
The specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition.
Claims (8)
1. The utility model provides a starting grid-connected control circuit of camera, a serial communication port, including grid-connected switch, its input electricity is connected the electric wire netting, its output is connected the input of main transformer ET, the output of main transformer ET is parallelly connected with the stator of camera and the input of main excitation control module respectively, the rotor of camera is parallelly connected with the output of main excitation control module and starting excitation control module output respectively, the input of starting excitation control module is connected the plant power supply electricity, main excitation control module, starting excitation control module is used for controlling the voltage of camera, accomplish the camera and be incorporated into the power networks the operation.
2. The startup grid-connected control circuit of a camera according to claim 1, further comprising a de-excitation and overvoltage protection module, wherein an input end of the de-excitation and overvoltage protection module is electrically connected with a rotor of the camera, and the de-excitation and overvoltage protection module is respectively connected in parallel with an output end of the main excitation control module and an output end of the startup excitation control module.
3. The grid-connected control circuit for starting a camera according to claim 2, wherein the main excitation control module comprises a main excitation transformer ET1, an input end of the main excitation transformer ET1 is electrically connected with an output end of the main excitation transformer ET, an output end of the main excitation transformer ET1 is electrically connected with an input end of a main excitation thyristor rectifier cabinet TYR1, an output end of the main excitation thyristor rectifier cabinet TYR1 is electrically connected with an input end of a main excitation vanishing switch MK1, an output end of the main excitation vanishing switch MK1 is connected with an output end of a de-excitation and overvoltage protection module, and the main excitation thyristor rectifier cabinet TYR1 is in control connection with a main excitation control device AVR1.
4. The grid-connected control circuit for starting a camera according to claim 2, wherein the starting excitation control module comprises a starting excitation transformer ET2, an input end of the starting excitation transformer ET2 is electrically connected with a factory power supply, an output end of the starting excitation transformer ET2 is electrically connected with an input end of a starting thyristor rectifier device TYR2, an output end of the starting thyristor rectifier device TYR2 is connected with an input end of a magnetic deactivation switch MK2, an output end of the magnetic deactivation switch MK2 is connected with an input end of an electric isolation switch DK1, an output end of the electric isolation switch DK1 is connected with an output end of a magnetic deactivation and overvoltage protection module, and the starting thyristor rectifier device TYR2 is in control connection with a starting excitation control device AVR2.
5. The grid-connected control circuit for starting a camera according to claim 3, wherein the main excitation transformer ET1 is a ZLC-1000 type main excitation transformer, the main excitation thyristor rectifier cabinet TYR1 is a TYR1500 type main excitation thyristor rectifier cabinet, and the main excitation control device AVR1 is a GER3000 type main excitation control device.
6. The grid-connected control circuit for starting a camera according to claim 4, wherein the starting exciting transformer ET2 is a ZLC-50 type starting exciting transformer, the starting thyristor rectifying device TYR2 is a TYR300 type starting thyristor rectifying device, and the starting exciting control device AVR2 is a GER3000 type starting exciting control device.
7. A startup grid-tie control circuit for a camera according to claim 3, wherein said main excitation extinction switch MK1 is a type Gerapid 2607 extinction switch.
8. The grid-connected control circuit for starting a camera according to claim 4, wherein the magnetic extinction switch MK2 is a DMX2 type magnetic extinction switch, and the electric isolation switch DK1 is a SQGD type electric isolation switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322701601.2U CN221328620U (en) | 2023-10-09 | 2023-10-09 | Starting grid-connected control circuit of camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322701601.2U CN221328620U (en) | 2023-10-09 | 2023-10-09 | Starting grid-connected control circuit of camera |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221328620U true CN221328620U (en) | 2024-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322701601.2U Active CN221328620U (en) | 2023-10-09 | 2023-10-09 | Starting grid-connected control circuit of camera |
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| Country | Link |
|---|---|
| CN (1) | CN221328620U (en) |
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2023
- 2023-10-09 CN CN202322701601.2U patent/CN221328620U/en active Active
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