CN212850261U - Soft start circuit for direct-current capacitive ultra-large load of sea wave power station - Google Patents
Soft start circuit for direct-current capacitive ultra-large load of sea wave power station Download PDFInfo
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- CN212850261U CN212850261U CN202021758122.4U CN202021758122U CN212850261U CN 212850261 U CN212850261 U CN 212850261U CN 202021758122 U CN202021758122 U CN 202021758122U CN 212850261 U CN212850261 U CN 212850261U
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Abstract
The utility model discloses a soft start circuit for wave power station direct current capacity super large load aims at providing a simple structure, and the high soft start circuit that is used for wave power station direct current capacity super large load of reliability. The sea wave power station comprises an input circuit breaker K1, a time delay relay KT1, a solid state relay and a current limiting resistor R, wherein a direct current and an auxiliary alternating current power supply output by the sea wave power station are respectively connected with the input end of the input circuit breaker K1; after the current-limiting resistor R is connected with the output end SSRK of the solid-state relay in parallel, one end of the current-limiting resistor R is connected with the first output end of the input circuit breaker K1, and the other end of the current-limiting resistor R is used as the output end of the soft start circuit; the live wire and the zero line of supplementary alternating current power supply connect respectively in the both ends of delay relay KT1 coil, solid state relay's input passes through delay relay's time delay contact is connected with supplementary direct current power supply. The soft start circuit is simple in structure and high in reliability.
Description
Technical Field
The utility model relates to a wave power generation technical field, more specifically say so, relate to a soft start circuit that is used for wave power station direct current capacity super large load.
Background
In a multi-floater sea wave power station, when the alternating voltage of a generator is rectified into direct current, the alternating voltage needs to be converged into one path of direct current to be connected to an inverter. Because the wave power generator generates power intermittently, the inverter connected later is often connected with a large capacitance value capacitor, and a capacitive large load is formed for the circuit breaker after junction. When the circuit breaker is switched on, huge current can be formed, so that the circuit breaker is subjected to arc discharge and ignition, and even is directly damaged. And when the inverter operates stably, the input working current is not large. Therefore, for an input circuit with the starting current being several times or even dozens of times of the working current, a direct current soft start switch is needed, and the input impedance is increased in the first dozens of seconds of turning on the load, namely, the input current is limited. After the capacitive load at the back is charged, the input current is also reduced to be stable, and then the external input impedance is removed, so that the soft start of the direct current capacitive large load is realized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the technical defect who exists among the prior art, and provide a simple structure, the high soft start circuit that is used for wave power station direct current capacity super large load of reliability.
For realizing the utility model discloses a technical scheme that the purpose adopted is:
a soft start circuit for a direct current capacitive super-large load of an ocean wave power station comprises an input circuit breaker K1, a time delay relay KT1, a solid state relay and a current limiting resistor R, wherein a direct current and an auxiliary alternating current power supply output by the ocean wave power station are respectively connected with the input end of the input circuit breaker K1; after the current-limiting resistor R is connected with the output end SSRK of the solid-state relay in parallel, one end of the current-limiting resistor R is connected with the first output end of the input circuit breaker K1, and the other end of the current-limiting resistor R is used as the output end of the soft start circuit; the live wire and the zero line of supplementary alternating current power supply connect respectively in the both ends of delay relay KT1 coil, solid state relay's input passes through delay relay's time delay contact is connected with supplementary direct current power supply.
The input breaker K1 is an air switch.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a soft start circuit is the soft start circuit of direct current that comprises input circuit breaker K1, time delay relay KT1, solid state relay and current-limiting resistor R, simple structure, and the reliability is high.
Drawings
Fig. 1 is a schematic diagram of a soft start circuit for a dc capacitive super-load of a wave power station according to the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The utility model discloses a schematic diagram of a soft start circuit for seawave power station direct current capacity super large load is shown in fig. 1, including input circuit breaker K1, time delay relay KT1, solid state relay and current limiting resistor R, the direct current of seawave power station output and supplementary alternating current power supply respectively with the input of input circuit breaker K1 is connected; after the current-limiting resistor R is connected with the output end SSRK of the solid-state relay in parallel, one end of the current-limiting resistor R is connected with the first output end of the input circuit breaker K1, and the other end of the current-limiting resistor R is used as the output end of the soft start circuit; the live wire and the zero line of supplementary alternating current power supply connect respectively in the both ends of delay relay KT1 coil, solid state relay's input passes through delay relay's time delay contact is connected with supplementary direct current power supply.
In this embodiment, the input breaker K1 is an air switch.
The direct current of the rectified direct current of the alternating voltage of the generator of the wave power station is input from a point A, passes through an input breaker K1 to a point B, and passes through a current limiting resistor R to be output to a point C. Meanwhile, the input breaker K1 also switches the live wire L of the auxiliary power supply ac220 to the time delay relay KT1, so that the delay contacts a-b of the time delay relay KT1 are in delay conduction, and the delay time can be set on the delay relay and can be determined according to the load size. When the delay contacts a-B of the time delay relay KT1 are switched on, the direct current +24v voltage is applied to the solid-state relay, so that the output contact SSRK of the solid-state relay is switched on, the current is switched from B to C, and the current limiting resistor R is connected across, thereby realizing the soft start of the direct current input circuit.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (2)
1. A soft start circuit for a direct current capacitive super-large load of an ocean wave power station is characterized by comprising an input breaker K1, a time delay relay KT1, a solid state relay and a current limiting resistor R, wherein a direct current and an auxiliary alternating current power supply output by the ocean wave power station are respectively connected with the input end of the input breaker K1; after the current-limiting resistor R is connected with the output end SSRK of the solid-state relay in parallel, one end of the current-limiting resistor R is connected with the first output end of the input circuit breaker K1, and the other end of the current-limiting resistor R is used as the output end of the soft start circuit; the live wire and the zero line of supplementary alternating current power supply connect respectively in the both ends of delay relay KT1 coil, solid state relay's input passes through delay relay's time delay contact is connected with supplementary direct current power supply.
2. A soft start circuit for a dc capacitive very high load in an ocean wave power plant according to claim 1, characterized in that the input breaker K1 is an air switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021758122.4U CN212850261U (en) | 2020-08-21 | 2020-08-21 | Soft start circuit for direct-current capacitive ultra-large load of sea wave power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021758122.4U CN212850261U (en) | 2020-08-21 | 2020-08-21 | Soft start circuit for direct-current capacitive ultra-large load of sea wave power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212850261U true CN212850261U (en) | 2021-03-30 |
Family
ID=75137894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021758122.4U Expired - Fee Related CN212850261U (en) | 2020-08-21 | 2020-08-21 | Soft start circuit for direct-current capacitive ultra-large load of sea wave power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212850261U (en) |
-
2020
- 2020-08-21 CN CN202021758122.4U patent/CN212850261U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210330 |
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| CF01 | Termination of patent right due to non-payment of annual fee |