CN217789385U - Service black start switching system - Google Patents
Service black start switching system Download PDFInfo
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- CN217789385U CN217789385U CN202220931374.5U CN202220931374U CN217789385U CN 217789385 U CN217789385 U CN 217789385U CN 202220931374 U CN202220931374 U CN 202220931374U CN 217789385 U CN217789385 U CN 217789385U
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Abstract
The utility model relates to the technical field of power generation equipment, a black start switching system for service is disclosed, including the decentralized controller, the decentralized controller is connected with energy storage controller and switching device in the same period respectively, the energy storage controller is connected with respectively and assists accuse device and energy memory, it is connected with gas turbine generator and energy storage converter respectively to assist accuse device, it with the energy memory to assist the accuse device to be connected, the energy storage converter with the energy memory is connected, the energy memory with the gas turbine generator all with switching device in the same period is connected, switching device in the same period connects the unit service; the utility model discloses can the automatic identification synchronization point nature of being incorporated into the power networks, accomplish the combined floodgate when the phase angle difference is zero accurately, accomplish not having the impact and incorporated into the power networks, realize that the power supply switches over the success rate height, the time of switching each other is short, effectively avoids the motor to receive the impact damage, extension motor life can effectively avoid the power failure of unit factory power consumption, is favorable to improving the reliability of unit operation simultaneously.
Description
Technical Field
The utility model relates to a power generation facility technical field specifically is an service black start switched systems.
Background
When the power grid fails and all power is cut off, the power grid is in a completely black state, the power plant recovers normal power supply of the station service power by starting the energy storage system, so that the gas turbine is started, after the gas turbine is started successfully, the station service power needs to be switched from the energy storage system to the gas turbine generator with the load, the gas turbine generator operates in an isolated network with the station service power to become a power supply point of the power grid, and finally, the power supply is gradually recovered to the power grid, so that black start is realized.
In the prior art, when black start is performed, a fast switching device is usually adopted to switch power supply of an energy storage system and power supply of a gas turbine generator, but the energy storage system runs with 6.6kV station power, when the gas turbine generator runs with a high station to a no-load mode, a 6.6kV bus voltage Um detected by the fast switching device is derived from the voltage of the energy storage system, a standby voltage Us is derived from the gas turbine generator, the gas turbine generator and the energy storage system belong to two different power systems, an initial phase difference exists between Us and Um, the initial phase difference is random, a phase difference exists between 0-360 degrees, a phase difference allowed by parallel switching of the fast switching device is 15 degrees, and once the initial phase difference of secondary voltage of the gas turbine generator and the energy storage system is larger than 15 degrees, locking is performed immediately.
Therefore, black start is carried out through the prior art, the power supply switching success rate of the factory power of the unit is low, the switching time is long, the normal use of the motor is further damaged, and the motor can be damaged by impact or the service life is reduced. Meanwhile, the voltage of a large-capacity motor is attenuated when power failure occurs, and if the residual voltage is too large, a standby power supply, the motor and the like are damaged due to impact; when the residual voltage is reduced to a certain value (for example, 25% -40%), and then the standby power supply is put into use, the bus voltage of the line and the rotation speed of the motor may be reduced too much due to too long power failure time, which may cause serious influence on the normal operation of the motor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an industrial black start switched systems, aim at providing energy automatic identification synchronization point nature of being incorporated into the power networks, accomplish the combined floodgate when the phase angle difference is zero degree accurately, accomplish not have the impact and be incorporated into the power networks, it is high to realize the power supply switching success rate, the time of switching over each other is short, effectively avoid the motor to receive the impact damage, extension motor life can effectively avoid the power failure of unit industrial black start switched systems, be favorable to improving one kind of industrial black start switched systems of the reliability of unit operation simultaneously.
The utility model discloses a realize like this:
the utility model provides an auxiliary black start switching system, includes the decentralized controller, the decentralized controller is connected with energy storage controller and switching device in the same period respectively, the energy storage controller is connected with respectively and assists accuse device and energy memory, it is connected with combustion engine generator and energy storage converter respectively to assist accuse device, assist accuse device with energy memory connects, energy storage converter with energy memory connects, energy memory with the combustion engine generator all with switching device in the same period connects, switching device in the same period connects the unit auxiliary power.
Compared with the prior art, the beneficial effects of the utility model are that:
in practical application, in the process of black start, firstly, the auxiliary power of the unit is carried by the energy storage device, so that the auxiliary power of the unit is recovered to normal power supply, and the gas turbine generator is started, after the gas turbine generator is successfully started, a worker selects a synchronization point through the decentralized controller, the coordination controller tracks and detects phases of output voltages of the gas turbine generator and the energy storage device, controls the energy storage converter to adjust the phases of the voltages of the energy storage device according to phase signals of the two voltages, when the energy storage converter adjusts the voltage phases of the energy storage device to be matched with the voltage phases of the fuel generator, the energy storage converter feeds back an adjustment condition to the coordination controller, the coordination controller transmits signals matched with the two voltage phases to the energy storage controller, the energy storage controller feeds back the signals matched with the two voltage phases to the decentralized controller, the decentralized controller controls to start the synchronization switching device according to the received signals, the auxiliary power utilization of the unit is switched from the energy storage device to the load carrying of the gas turbine generator through the synchronization switching device, the decentralized controller feeds back the signals matched with the two voltage phases to the decentralized controller, the synchronization switching device controls the startup of the synchronization switching device to start the synchronization switching device, the black power supply of the unit is gradually switched to the black power grid, and the power supply of the black power generation network, so that the unit is recovered to be switched on, and the black power grid is recovered, and the black power grid power supply of the black power generation network, and the black power generation network, so that the black power generation machine is effectively switched on, and the black power generation network, the black power generation machine is effectively realized; the utility model discloses can the automatic identification synchronization point nature of being incorporated into the power networks, accomplish the combined floodgate when the phase angle difference is zero accurately, accomplish not having the impact and incorporated into the power networks, realize that the power supply switches over the success rate height, the time of switching each other is short, effectively avoids the motor to receive the impact damage, extension motor life can effectively avoid the power failure of unit factory power consumption, is favorable to improving the reliability of unit operation simultaneously.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic block diagram of the present invention.
Detailed Description
To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Please refer to fig. 1, an industrial black start switching system, includes the decentralized controller, the decentralized controller is connected with energy storage controller and switching device in same period respectively, the energy storage controller is connected with accuse device and energy memory respectively, it is connected with gas turbine generator and energy storage converter respectively to assist accuse device, assist accuse device with energy memory connects, energy storage converter with energy memory connects, energy memory with the gas turbine generator all with switching device in same period connects, switching device in same period connects the unit industrial power.
In practical application, in the process of black start, firstly, the auxiliary power of the unit is carried by the energy storage device, so that the auxiliary power of the unit is recovered to normal power supply, and the gas turbine generator is started, after the gas turbine generator is successfully started, a worker selects a synchronization point through the decentralized controller, the coordination controller tracks and detects phases of output voltages of the gas turbine generator and the energy storage device, controls the energy storage converter to adjust the phases of the voltages of the energy storage device according to phase signals of the two voltages, when the energy storage converter adjusts the voltage phases of the energy storage device to be matched with the voltage phases of the fuel generator, the energy storage converter feeds back an adjustment condition to the coordination controller, the coordination controller transmits signals matched with the two voltage phases to the energy storage controller, the energy storage controller feeds back the signals matched with the two voltage phases to the decentralized controller, the decentralized controller controls to start the synchronization switching device according to the received signals, the auxiliary power utilization of the unit is switched from the energy storage device to the load carrying of the gas turbine generator through the synchronization switching device, the decentralized controller feeds back the signals matched with the two voltage phases to the decentralized controller, the synchronization switching device controls the startup of the synchronization switching device to start the synchronization switching device, the black power supply of the unit is gradually switched to the black power grid, and the power supply of the black power generation network, so that the unit is recovered to be switched on, and the black power grid is recovered, and the black power grid power supply of the black power generation network, and the black power generation network, so that the black power generation machine is effectively switched on, and the black power generation network, the black power generation machine is effectively realized; the utility model discloses can the automatic identification synchronization point nature of being incorporated into the power networks, accomplish the combined floodgate when the phase angle difference is zero accurately, accomplish not having the impact and incorporated into the power networks, realize that the power supply switches over the success rate height, the time of switching each other is short, effectively avoids the motor to receive the impact damage, extension motor life can effectively avoid the power failure of unit factory power consumption, is favorable to improving the reliability of unit operation simultaneously.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. The utility model provides an auxiliary black start switched systems which characterized in that: including the decentralized controller, the decentralized controller is connected with energy storage controller and switching device in same period respectively, the energy storage controller is connected with accuse device and energy memory in coordination respectively, it is connected with combustion engine generator and energy storage converter respectively to coordinate accuse device, cooperate accuse device with energy memory connects, energy storage converter with energy memory connects, energy memory with the combustion engine generator all with switching device in same period connects, switching device in same period connects the unit station service power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220931374.5U CN217789385U (en) | 2022-04-21 | 2022-04-21 | Service black start switching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220931374.5U CN217789385U (en) | 2022-04-21 | 2022-04-21 | Service black start switching system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217789385U true CN217789385U (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220931374.5U Active CN217789385U (en) | 2022-04-21 | 2022-04-21 | Service black start switching system |
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| Country | Link |
|---|---|
| CN (1) | CN217789385U (en) |
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2022
- 2022-04-21 CN CN202220931374.5U patent/CN217789385U/en active Active
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