CN217406433U - Small-capacity test station suitable for high-voltage silicon controlled soft start device - Google Patents
Small-capacity test station suitable for high-voltage silicon controlled soft start device Download PDFInfo
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- CN217406433U CN217406433U CN202221073280.5U CN202221073280U CN217406433U CN 217406433 U CN217406433 U CN 217406433U CN 202221073280 U CN202221073280 U CN 202221073280U CN 217406433 U CN217406433 U CN 217406433U
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Abstract
The utility model relates to a power system semiconductor break-make detects technical field, a little capacity test station suitable for soft device that plays of high pressure silicon controlled rectifier is disclosed, including the low pressure power supply block terminal, the step up transformer device, wait to detect the soft device that plays of silicon controlled rectifier and soft play line terminal mutual-inductor cabinet, utilize existing low pressure to join in marriage net condition, the realization is detected the performance of the soft starting drive of high voltage motor silicon controlled rectifier, merge into existing electric wire netting through the low pressure power supply block terminal and acquire the power, step up transformer device lifting voltage realizes the high-voltage supply, wait to detect the soft device that plays of silicon controlled rectifier and monitor output electric power parameter through soft play line terminal mutual-inductor cabinet, it is visual with the soft start-up effect of silicon controlled rectifier to start visual effect lamplight board simultaneously. The utility model discloses a low capacity test station can realize that low pressure low capacity electrical power generating system detects the soft purpose that plays of high-pressure high-power motor silicon controlled rectifier.
Description
Technical Field
The utility model relates to an electric power system semiconductor break-make detects technical field, in particular to little capacity test station suitable for device is played in soft of high-pressure silicon controlled rectifier.
Background
The high-voltage high-power motor has high power universality, and a soft starting mode is usually adopted in industrial application so as to achieve the purpose of weakening the impact of full-voltage starting on a power grid.
The high-voltage silicon controlled soft starting device adopts three-phase anti-parallel multi-stage silicon controlled rectifiers as a voltage regulator, and the three-phase anti-parallel multi-stage silicon controlled rectifiers are connected between a high-voltage power supply and a high-voltage motor stator in series. When the high-voltage silicon controlled soft starter is used for starting the motor, the conduction angle of the multistage silicon controlled rectifier is controlled through the trigger circuit, so that the input voltage of the stator end of the high-voltage motor is changed. The conduction angle of the multistage silicon controlled rectifier is controlled to be gradually increased, the voltage of the stator end of the high-voltage motor is increased, the motor is accelerated and is completely conducted to the multistage anti-parallel silicon controlled rectifier, full-voltage operation is achieved, smooth starting of the motor is achieved, starting current is reduced, and starting overcurrent tripping is avoided.
The high-voltage motor has high cost, the minimum power is hundreds of kilowatts, the cost for purchasing a special motor to carry out soft-start characteristic test is high, the utilization rate is low, and the high-voltage motor is an economic burden which is hard to bear for common soft-start cabinet manufacturers.
The capacity of a power grid required by starting the high-voltage motor is multiple times of the rated capacity of the high-voltage motor, the instantaneous impact generated during starting puts higher requirements on the capacity of the power grid, more material resources are required to be input if the capacity of the power grid is expanded, and under the condition of low relative utilization rate, the supply of a power supply office end is in a hot standby state for a long time, and more penalties for bearing more electric power cost and energy loss are required.
Common soft start equipment manufacturers do not have working conditions of application of a high-power motor, do not need to be provided with a large-capacity power grid system under the condition, but need an effective inspection mode and measure for the produced silicon controlled soft start equipment to ensure that a plurality of power and control elements in the silicon controlled soft start device are complete and normal in production assembly and function use, so that a low-cost platform needs to be constructed to verify that each high-voltage silicon controlled soft start equipment can meet the actual requirements of the industrial field high-voltage high-power motor under the condition of the existing low-voltage power grid.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a low capacity test station suitable for soft device that plays of high-pressure silicon controlled rectifier utilizes under the condition of current factory low pressure distribution network, realizes the delivery performance detection to the soft equipment that plays of high-pressure silicon controlled rectifier.
The above technical purpose of the present invention can be achieved by the following technical solutions: the small-capacity testing station comprises a low-voltage power supply distribution box, a step-up transformer device and a soft-start wire outlet end transformer cabinet, wherein the output end of the low-voltage power supply distribution box is connected with the input end of the step-up transformer device, the output end of the step-up transformer device is connected with the input end of the soft-start device of the silicon controlled rectifier to be detected, the output end of the soft-start device of the silicon controlled rectifier to be detected is connected to the soft-start wire outlet end transformer cabinet, the low-voltage power supply distribution box is used for being merged into a power grid to obtain a power supply, the step-up transformer device is used for boosting the voltage provided by the low-voltage power supply distribution box and outputting the voltage to the soft-start device of the silicon controlled rectifier to be detected, and the soft-start wire outlet end transformer cabinet is used for monitoring the electric power parameters output by the soft-start device of the silicon controlled rectifier to be detected.
The utility model discloses a further set up to: the starting visual effect light plate comprises a plurality of indicating lamps, and the indicating lamps are connected in a multistage series connection mode.
The utility model discloses a further set up to: the step-up transformer device comprises a low-voltage current transformer, a high-voltage sensor, an ammeter, a voltmeter and a switching control loop, wherein the input end of the low-voltage current transformer is connected with the low-voltage power supply distribution box through a switch, the output end of the low-voltage current transformer is connected with the input end of the switching control loop through a 0.4kV power input contactor, and the output end of the switching control loop is connected with a 10kV input contactor and a 6kV input contactor respectively.
The utility model discloses a further set up to: taps of the 10kV input contactor and the 6kV input contactor are designed by adopting multiple windings.
The utility model discloses a further set up to: the soft-start outlet terminal mutual inductor cabinet comprises an outlet terminal current measuring mutual inductor and an outlet terminal voltage measuring mutual inductor, the outlet terminal current measuring mutual inductor is used for measuring and displaying the output current of the silicon controlled soft-start device to be detected, and the outlet terminal voltage measuring mutual inductor is used for measuring and displaying the output voltage of the silicon controlled soft-start device to be detected.
The beneficial effects of the utility model are that: the utility model discloses utilize existing low pressure to join in marriage net condition, the realization is detected high voltage electric machine silicon controlled rectifier soft starting device's performance, incorporate into existing electric wire netting through the low pressure power supply block terminal and acquire the power, step up transformer device lifting voltage realizes the high-pressure supply, it monitors output power parameter to wait to detect the soft device that plays of silicon controlled rectifier through soft terminal mutual-inductor cabinet that plays, it is visual with the soft effect of starting of silicon controlled rectifier to start visual effect light board simultaneously, can realize can't differentiate the purpose whether there is inherent usage defect in the soft starting equipment of silicon controlled rectifier under the errorless condition of wiring outward appearance, can also avoid extra high voltage electric network to insert expense and high voltage electric machine equipment purchase expense.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is an electrical schematic of the present invention;
fig. 2 is an electrical schematic diagram of the step-up transformer apparatus of the present invention;
fig. 3 is a schematic structural view of the low-voltage power supply distribution box of the present invention;
fig. 4 is a schematic diagram of the internal structure of the step-up transformer device of the present invention;
fig. 5 is a schematic diagram of the internal structure of the step-up transformer device of the present invention;
fig. 6 is the internal structure schematic diagram of the soft-start outgoing line end transformer cabinet of the present invention.
In the figure, 1, a low-voltage power supply distribution box; 2. a step-up transformer device 21, a low-voltage current transformer 22, a high-voltage sensor 23, an ammeter 24, a voltmeter 25 and a switching control loop; 3. a silicon controlled soft start device to be detected; 4. a transformer cabinet at a soft-start outlet end 41, an outlet end current measuring transformer 42 and an outlet end voltage measuring transformer; 5. starting a visual effect light plate 51 and an indicator light; 6. a 0.4kV power supply is put into the contactor; 7. 10kV input contactor; 8. 6kV was put into the contactor.
Detailed Description
The technical solution of the present invention will be clearly and completely described below with reference to the specific embodiments. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, a small capacity testing station suitable for a high voltage silicon controlled soft start device comprises a low voltage power supply distribution box 1, a step up transformer device 2 and a soft start-up outlet terminal mutual inductor cabinet 4, wherein an output end of the low voltage power supply distribution box 1 is connected with an input end of the step up transformer device 2, an output end of the step up transformer device 2 is connected with an input end of a silicon controlled soft start device 3 to be detected, an output end of the silicon controlled soft start device 3 to be detected is connected to the soft start-up outlet terminal mutual inductor cabinet 4, the low voltage power supply distribution box 1 is used for being merged into a power grid to obtain a power supply, the step up transformer device 2 is used for boosting the voltage provided by the low voltage power supply distribution box 1 and outputting the boosted voltage to the silicon controlled soft start device 3 to be detected, the soft start-up outlet terminal mutual inductor cabinet 4 is used for monitoring the electric power parameter output by the silicon controlled soft start-up soft start device 3, the visual effect light panel 5 further comprises a start visual effect light panel 5 comprising a plurality of indicator lights 51, the indicator lamp 51 is connected in a multistage series. This embodiment is through low voltage power supply block terminal 1, step up transformer device 2, the soft combination that plays outlet wire end mutual-inductor cabinet 4 and start these several kinds of equipment of visual effect light board 5 is used, can realize the soft purpose that plays of low pressure low capacity electrical power generating system detection high voltage high power motor silicon controlled rectifier, low voltage power supply block terminal 1 incorporates into existing electric wire netting and acquires the power, step up transformer device 2 lifting voltage realizes the high-pressure supply, wait to detect soft play device 3 of silicon controlled rectifier and monitor output electric power parameter through soft outlet wire end mutual-inductor cabinet 4, it is visual with the soft start effect of silicon controlled rectifier to start visual effect light board 5 simultaneously. The starting visual effect light plate 5 in the embodiment can present visual observation effect according to the preset value of the silicon controlled soft start device 3 to be detected, can provide judgment basis for fault phase and cause analysis, and preferably, the indicating lamps 51 are all in the same batch and the same specification, so that load impedance balance is ensured, and the display effect is accurate. According to the embodiment, mutual inductor detection and switch switching in the low-voltage power supply distribution box 1 can be utilized, and the thermal relay protection is matched to realize the purpose that the power supply distribution box is cut off from a power supply network when the load is overlarge. It should be noted that attention needs to be paid to the parameter matching degree of the low-voltage power supply distribution box 1 and the silicon controlled soft start device 3 to be detected during the soft start test, so that protection actions caused by mismatching of parameter setting range values are avoided, and the test smoothness and accuracy are guaranteed.
Referring to fig. 2, 4 and 5, the step-up transformer device 2 includes a low-voltage current transformer 21, a high-voltage sensor 22, an ammeter 23, a voltmeter 24 and a switching control circuit 25, an input end of the low-voltage current transformer 21 is connected with the low-voltage power supply distribution box 1 through a switch, an output end of the low-voltage current transformer 21 is connected with an input end of the switching control circuit 25 through a 0.4kV power input contactor 6, and an output end of the switching control circuit 25 is connected with a 10kV input contactor 7 and a 6kV input contactor 8 respectively. The step-up transformer device 2 can realize automatic switching matching of starting cabinets with different voltage grades through switching of the 10kV input contactor 7 and the 6kV input contactor 8 according to the rated voltage grade of the silicon controlled soft start device 3 to be detected. In this embodiment, the step-up transformer device 2 utilizes the existing power supply of the low-voltage power supply distribution box 1, and can be controlled by the 0.4kV power supply input contactor 6, so as to monitor and protect the current value for the test, and ensure that no disturbance is caused to the low-voltage power supply system of the plant area. Preferably, taps of the 10kV input contactor 7 and the 6kV input contactor 8 are designed by multiple windings, and the test requirements of the voltage amplitude difference of power grids in different regions can be met.
Referring to fig. 6, the soft start outlet terminal transformer cabinet 4 includes an outlet terminal current measuring transformer 41 and an outlet terminal voltage measuring transformer 42, the outlet terminal current measuring transformer 41 is used for measuring and displaying the output current of the to-be-detected silicon controlled soft start device 3, and the outlet terminal voltage measuring transformer 42 is used for measuring and displaying the output voltage of the to-be-detected silicon controlled soft start device 3. The silicon controlled soft start device 3 to be detected can judge whether the equipment components and the wiring have defects or not through the numerical value display of the outlet end current measuring mutual inductor 41 and the outlet end voltage measuring mutual inductor 42 of the soft start outlet end mutual inductor cabinet 4. It should be noted that the outlet end current measuring transformer 41 and the outlet end voltage measuring transformer 42 are all customized devices, which ensure the data indication of range and precision comparison when matching different voltage classes and power tests, realize the measurement of small current data which is difficult to capture after boosting, and simultaneously ensure the voltage display observation when applying to the voltage output of 6kV and 10 kV.
The working principle is as follows: the low-voltage power supply distribution box 1 is connected to a power grid, when the silicon controlled soft starting device to be detected is 10kV, a 10kV input contactor 7 in the step-up transformer device 2 is switched on through a switching control loop 25, and meanwhile, a 6kV input contactor 8 is kept disconnected; when the silicon controlled soft starting device to be detected is 6kV, a 6kV input contactor 8 in the step-up transformer device 2 is switched on through a switching control loop 25, and meanwhile a 10kV input contactor 7 is kept disconnected; starting the silicon controlled soft start device 3 to be detected, observing the numerical value changes of the outlet end current measuring mutual inductor 41 and the outlet end voltage measuring mutual inductor 42 in the soft start outlet end mutual inductor cabinet 4, keeping high attention to the starting visual effect light plate 5, confirming whether the expected effect is met, if the expected effect is not met, analyzing the fault cause according to the specific fault phase and phenomenon, and troubleshooting fault points. The utility model discloses an at the visual effect lamplight board of return circuit terminal configuration to the resolution ratio that the naked eye can be observed examines out the soft starting equipment that awaits measuring and whether have the problem defect.
Claims (5)
1. The utility model provides a small capacity test station suitable for soft device that plays of high pressure silicon controlled rectifier which characterized in that: comprises a low-voltage power supply distribution box (1), a step-up transformer device (2) and a transformer cabinet (4) at a soft start outlet end, the output end of the low-voltage power supply distribution box (1) is connected with the input end of the step-up transformer device (2), the output end of the step-up transformer device (2) is connected with the input end of the silicon controlled soft start device (3) to be detected, the output end of the silicon controlled soft start device (3) to be detected is connected to the mutual inductor cabinet (4) at the soft start outlet end, the low-voltage power supply distribution box (1) is used for being merged into a power grid to obtain a power supply, the step-up transformer device (2) is used for stepping up the voltage provided by the low-voltage power supply distribution box (1) and outputting the voltage to the silicon controlled soft start device (3) to be detected, and the mutual inductor cabinet (4) at the soft start outlet end is used for monitoring the electric power parameters output by the silicon controlled soft start device (3) to be detected.
2. The small-capacity test station suitable for the high-voltage silicon controlled soft start device according to claim 1, wherein: the starting visual effect light plate is characterized by further comprising a starting visual effect light plate (5), wherein the starting visual effect light plate (5) comprises a plurality of indicator lamps (51), and the indicator lamps (51) are connected in a multistage series connection mode.
3. The small-capacity test station suitable for the high-voltage silicon controlled soft start device according to claim 1, wherein: the step-up transformer device (2) comprises a low-voltage current transformer (21), a high-voltage sensor (22), an ammeter (23), a voltmeter (24) and a switching control loop (25), wherein the input end of the low-voltage current transformer (21) is connected with the low-voltage power supply distribution box (1) through a switch, the output end of the low-voltage current transformer (21) is connected with the input end of the switching control loop (25) through a 0.4kV power supply input contactor (6), and the output end of the switching control loop (25) is connected with a 10kV input contactor (7) and a 6kV input contactor (8) respectively.
4. The small-capacity test station suitable for the high-voltage silicon controlled soft start device according to claim 3, wherein: taps of the 10kV input contactor (7) and the 6kV input contactor (8) are designed by adopting multiple windings.
5. The small-capacity test station suitable for the high-voltage silicon controlled soft start device according to claim 1, wherein: the soft-start outlet terminal transformer cabinet (4) comprises an outlet terminal current measuring transformer (41) and an outlet terminal voltage measuring transformer (42), wherein the outlet terminal current measuring transformer (41) is used for measuring and displaying the output current of the silicon controlled soft-start device (3) to be detected, and the outlet terminal voltage measuring transformer (42) is used for measuring and displaying the output voltage of the silicon controlled soft-start device (3) to be detected.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221073280.5U CN217406433U (en) | 2022-05-05 | 2022-05-05 | Small-capacity test station suitable for high-voltage silicon controlled soft start device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221073280.5U CN217406433U (en) | 2022-05-05 | 2022-05-05 | Small-capacity test station suitable for high-voltage silicon controlled soft start device |
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| CN217406433U true CN217406433U (en) | 2022-09-09 |
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| CN202221073280.5U Active CN217406433U (en) | 2022-05-05 | 2022-05-05 | Small-capacity test station suitable for high-voltage silicon controlled soft start device |
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| CN (1) | CN217406433U (en) |
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- 2022-05-05 CN CN202221073280.5U patent/CN217406433U/en active Active
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