CN212992037U - Mobile emergency guarantee alternating current power supply system - Google Patents
Mobile emergency guarantee alternating current power supply system Download PDFInfo
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- CN212992037U CN212992037U CN202022180858.4U CN202022180858U CN212992037U CN 212992037 U CN212992037 U CN 212992037U CN 202022180858 U CN202022180858 U CN 202022180858U CN 212992037 U CN212992037 U CN 212992037U
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- 238000004146 energy storage Methods 0.000 claims abstract description 24
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- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000010248 power generation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 1
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Abstract
The utility model discloses an and provide a simple structure, satisfy the incessant power supply requirement of load and portable emergency support alternating current power supply system who arranges. The utility model comprises a fast switch, a first outlet switch, a second outlet switch, an energy storage unit, a converter unit, a control unit and a mobile device; the line inlet end of the first line outlet switch is connected with a power grid, the line outlet end of the first line outlet switch is connected with the line inlet end of the quick switch, the line outlet end of the quick switch is connected with the output end of the current transformation unit and the line inlet end of the second line outlet switch, the line outlet end of the second line outlet switch is connected with a load, and the energy storage unit is connected with the current transformation unit in series; the control unit is used for monitoring the voltage change of the power grid and controlling the rapid switch to be switched on and switched off; when emergency guarantee power supply is needed on site, the container or the power supply vehicle can be moved to the site, and the equipment is connected between a power grid and a load in series to serve as emergency guarantee power supply. The utility model discloses be applied to the field of the emergent guarantee power supply in scene.
Description
Technical Field
The utility model discloses be applied to the field of the emergent guarantee power supply in scene, in particular to portable emergent guarantee alternating current power supply system.
Background
In some important festivals or during the period of holding important activities, it is necessary to ensure that some important power utilization places such as halls, hotels, public places, etc. cannot interrupt power supply during the period of holding activities, so in order to ensure the power supply continuity, measures such as temporarily equipping a mobile diesel engine power generation vehicle (as shown in fig. 1) or temporarily installing a UPS (as shown in fig. 2) on the site are generally required to ensure the continuity of power supply of important loads. If the UPS is adopted on site, the UPS needs to be connected in series between a power grid and a load, when the power grid is normal, the UPS needs to bear load power and large impact load in full, and has large loss, large heat and large noise, large amount of useless energy is consumed, and large economic loss is caused; if the diesel engine power generation vehicle is adopted, when a power grid fails, a load needs to be switched from power supply of the power grid to power supply of the diesel generator, the switching time is generally longer than 100mS, and some important loads can only bear power supply voltage sag below 5-20 mS or short-time power failure, so the diesel engine power generation vehicle has certain limitation on site emergency guarantee power supply, and the noise is high, so that the surrounding environment is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome prior art not enough, provide a portable emergent guarantee AC power supply system, portable emergent guarantee AC power supply system simple structure, the demand of the emergent guarantee power supply in scene can be satisfied to the method of guarantee power supply, the utility model discloses can replace UPS and diesel engine power generation supply car completely in the function, and can regard as energy storage system operation again during daily reserve, through the poor reduction user use cost of peak valley price of electric wire netting, when needing to provide emergent guarantee power supply, can remove equipment to the scene and use as emergent guarantee AC power supply.
The utility model adopts the technical proposal that: the mobile emergency guarantee alternating current power supply system comprises a quick switch FS, a first outgoing line switch K1, a second outgoing line switch K2, an energy storage unit BAT, a current conversion unit PCS, a control unit KZD and a mobile device; the wire inlet end of the first wire outlet switch K1 is connected with a power grid, the wire outlet end of the first wire outlet switch K1 is connected with the wire inlet end of the fast switch FS, the wire outlet end of the fast switch FS is connected with the output end of the converter unit PCS and the wire inlet end of the second wire outlet switch K2, and the wire outlet end of the second wire outlet switch K2 is connected with a load FZ; the energy storage unit BAT and the current transformation unit PCS are connected in series and then connected in parallel between the fast switch FS and the second outgoing line switch K2; the control unit KZD is used for monitoring the voltage change of a power grid and controlling the opening and closing of the fast switch FS; the fast switch FS, the first outgoing switch K1, the second outgoing switch K2, the energy storage unit BAT, the converter unit PCS, and the control unit KZD are all disposed on the mobile device.
Furthermore, the mobile device is arranged in a container or a power supply vehicle, when emergency guarantee power supply is needed on site, the container or the power supply vehicle can be moved to the site, and the mobile emergency guarantee alternating current power supply system is connected between a power grid and the load FZ in series and used for emergency guarantee power supply.
Further, the fast switch FS is an eddy current driven vacuum circuit breaker or contactor or an electronic switch.
Further, the opening time of the fast switch FS is less than 2 ms.
The utility model has the advantages that: because the utility model discloses an energy storage unit BAT is through the parallelly connected design of converter unit PCS and electric wire netting and load FZ, and when the electric wire netting was normal, the electric wire netting warp first switch K1 of being qualified for the next round of competitions quick switch FS the second switch K2 of being qualified for the next round of competitions is direct to the power supply of load FZ, almost lossless, the strong, the reliability of tolerance load impact ability. When the voltage of the power grid drops temporarily or power is cut off for a short time, the fast switch FS is switched off fast, the load FZ is disconnected from the power grid, and the conversion unit PCS quickly establishes voltage which is the same in phase with the power grid, has the same frequency and the same voltage amplitude and supplies power to the load FZ. Therefore, the utility model discloses simple structure, satisfy the incessant power supply requirement of load, can replace UPS completely in the function, just the utility model discloses do not directly establish ties between electric wire netting and load like traditional UPS, when the electric wire netting is normal, the utility model discloses the operation is almost lossless during standby.
Additionally, the utility model discloses except as the emergent guarantee power supply in scene, still can regard as energy storage system during daily reserve, the peak valley price difference through the electric wire netting reduces user use cost.
Drawings
FIG. 1 is a schematic block diagram of a prior art diesel engine power generation vehicle field connection;
FIG. 2 is a schematic block diagram of a UPS field connection;
fig. 3 is a block diagram of the system of the present invention;
FIG. 4 is a diagram of the states and power flows of the switches when the grid is normal and the grid is charging the energy storage unit and supplying power to the load;
FIG. 5 is a diagram of the states and power flows of the switches when the energy storage unit discharges to the grid and the load when the grid is normal;
fig. 6 is a diagram showing the states of the switches and the power flow when a short-term power failure occurs in the power grid.
Detailed Description
As shown in fig. 3, in the present embodiment, the mobile emergency guarantee ac power supply system includes a fast switch FS, a first outgoing switch K1, a second outgoing switch K2, an energy storage unit BAT, a current transformation unit PCS, a control unit KZD, and a mobile device; an incoming line end of the first outgoing line switch K1 is connected with a power grid, an outgoing line end of the first outgoing line switch K1 is connected with an incoming line end of the fast switch FS, an outgoing line end of the fast switch FS is connected with an output end of the converter unit PCS and an incoming line end of the second outgoing line switch K2, and an outgoing line end of the second outgoing line switch K2 is connected with the load FZ; the energy storage unit BAT and the current transformation unit PCS are connected in series and then connected in parallel between the fast switch FS and the second outgoing line switch K2; the control unit KZD is used for monitoring the voltage change of a power grid and controlling the opening and closing of the fast switch FS; the fast switch FS, the first outgoing switch K1, the second outgoing switch K2, the energy storage unit BAT, the converter unit PCS, and the control unit KZD are all disposed on the mobile device.
In this embodiment, the mobile device is a container or a power supply vehicle, and when emergency guarantee power supply is needed on site, the container or the power supply vehicle can be moved to the site, and the mobile emergency guarantee alternating current power supply system is connected in series between the power grid and the load FZ and used for emergency guarantee power supply.
In this embodiment, the fast switch FS is an eddy current driven vacuum circuit breaker or contactor or an electronic switch.
In this embodiment, the opening time of the fast switch FS is less than 2 ms.
In this embodiment, the method for guaranteeing power supply of the mobile emergency guarantee ac power supply system includes:
a. during the standby period of the daily mobile emergency guarantee alternating current power supply system, the mobile emergency guarantee alternating current power supply system is connected to a power grid, the power grid charges the energy storage unit BAT through the first outgoing switch K1, the fast switch FS and the current transformation unit PCS simultaneously, the energy storage unit BAT is standby or used as an energy storage system after being fully charged, when the mobile emergency guarantee alternating current power supply system is used as an emergency guarantee power supply, the step b is executed, the energy storage unit BAT is charged by the power grid during the low-valley power consumption period, and the energy storage unit BAT discharges to the power grid during the peak power consumption period, as shown in FIG. 5;
b. when the mobile emergency guarantee alternating current power supply system is used as an emergency guarantee power supply, the mobile emergency guarantee alternating current power supply system is moved to a place needing to guarantee power supply on site, the mobile emergency guarantee alternating current power supply system is connected between a power grid and a load FZ in series, and the control unit KZD executes the step c or the step d according to the condition of the power grid;
c. when the power grid is normal, as shown in fig. 4, the power grid directly supplies power to the load FZ through the first outgoing switch K1, the fast switch FS and the second outgoing switch K2, and simultaneously charges the energy storage unit BAT through the converter unit PCS, and after the energy storage unit BAT is fully charged, the converter unit PCS is in a phase-locked standby state;
d. when a voltage dip or short-time power failure occurs in the power grid, as shown in fig. 6, after the control unit KZD detects the voltage dip of the power grid within 1ms, a switching-off instruction is sent to the fast switch FS, the fast switch FS is quickly switched off within 2ms, the converter unit PCS quickly establishes the same voltage, phase and frequency as those of the power grid within 1ms, and the energy storage unit BAT supplies power to the load FZ, so that the power failure time of the load FZ is ensured to be less than 5 ms; when the power grid is recovered to be normal, executing the step e;
e. when the power grid is recovered to be normal, the conversion unit PCS automatically adjusts the output voltage, the frequency and the phase to be consistent with the power grid, the fast switch FS is closed, the conversion unit PCS and the load FZ are connected back to the power grid, the conversion unit PCS gradually reduces the output force at the moment, the impact of the fast exit process on the power grid and the load is avoided, and the load FZ is gradually powered by the power grid.
The utility model discloses but wide application in the field that needs the emergent guarantee power supply in scene such as electric power, communication, petrochemical industry, high-end manufacturing, data center for the uninterrupted power supply of equipment.
While the embodiments of the present invention have been described in terms of practical embodiments, they are not intended to limit the scope of the invention, and modifications of the embodiments and combinations with other embodiments will be apparent to those skilled in the art in light of the present description.
Claims (4)
1. The utility model provides a portable emergent guarantee alternating current power supply system which characterized in that: the mobile emergency guarantee alternating current power supply system comprises a quick switch (FS), a first outgoing switch (K1), a second outgoing switch (K2), an energy storage unit (BAT), a current conversion unit (PCS), a control unit (KZD) and a mobile device; the incoming line end of the first outgoing line switch (K1) is connected with a power grid, the outgoing line end of the first outgoing line switch (K1) is connected with the incoming line end of the Fast Switch (FS), the outgoing line end of the Fast Switch (FS) is connected with the output end of the converter unit (PCS) and the incoming line end of the second outgoing line switch (K2), and the outgoing line end of the second outgoing line switch (K2) is connected with a load (FZ); the energy storage unit (BAT) and the current transformation unit (PCS) are connected in series and then connected in parallel between the Fast Switch (FS) and the second outgoing line switch (K2); the control unit (KZD) is used for monitoring the voltage change of a power grid and controlling the opening and closing of the Fast Switch (FS); the quick switch (FS), the first outgoing switch (K1), the second outgoing switch (K2), the energy storage unit (BAT), the current conversion unit (PCS) and the control unit (KZD) are all arranged on the mobile device.
2. The mobile emergency safety alternating current power supply system according to claim 1, wherein: the mobile device is arranged in a container or a power supply vehicle, when emergency guarantee power supply is needed on site, the container or the power supply vehicle can be moved to the site, and the mobile emergency guarantee alternating current power supply system is connected between a power grid and the load (FZ) in series and used for emergency guarantee power supply.
3. The mobile emergency safety alternating current power supply system according to claim 1, wherein: the Fast Switch (FS) is an eddy current driven vacuum circuit breaker or contactor or electronic switch.
4. The mobile emergency and security ac power supply system according to claim 1 or 3, wherein: the opening time of the Fast Switch (FS) is less than 2 ms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022180858.4U CN212992037U (en) | 2020-09-29 | 2020-09-29 | Mobile emergency guarantee alternating current power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022180858.4U CN212992037U (en) | 2020-09-29 | 2020-09-29 | Mobile emergency guarantee alternating current power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212992037U true CN212992037U (en) | 2021-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022180858.4U Active CN212992037U (en) | 2020-09-29 | 2020-09-29 | Mobile emergency guarantee alternating current power supply system |
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| Country | Link |
|---|---|
| CN (1) | CN212992037U (en) |
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2020
- 2020-09-29 CN CN202022180858.4U patent/CN212992037U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231024 Address after: No. 128 Chuangxin Third Road, Tangjiawan Town, Zhuhai City, Guangdong Province, 519000 Patentee after: ZHUHAI TITANS TECHNOLOGY Co.,Ltd. Address before: Area F, 4th floor, No.1 Factory building, No.124 Keji 1st Road, high tech Zone, Zhuhai, Guangdong 519000 Patentee before: Zhuhai Huachuang taineng Energy Technology Co.,Ltd. |
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| TR01 | Transfer of patent right |