CN203191471U - Electric energy quality detection apparatus - Google Patents
Electric energy quality detection apparatus Download PDFInfo
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- CN203191471U CN203191471U CN 201320154035 CN201320154035U CN203191471U CN 203191471 U CN203191471 U CN 203191471U CN 201320154035 CN201320154035 CN 201320154035 CN 201320154035 U CN201320154035 U CN 201320154035U CN 203191471 U CN203191471 U CN 203191471U
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- quality detection
- detection device
- power quality
- motor
- voltage
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Abstract
The utility model relates to the electronics technical field, specifically to an electric energy quality detection apparatus which comprises a voltage detection apparatus, of which the measuring end is connected to an electrical network to be measured. The electric energy quality detection apparatus further comprises a motor, of which the power output terminal is connected to a load and the power supply end is connected to the electrical network to be measured. The detection of the electrical network to be measured is completed by utilizing the influence of voltage change during starting the motor on the voltage of the electrical network to be measured. The electric energy quality detection apparatus is simple in structure and convenient for measurement.
Description
Technical field
The utility model relates to electronic technology field, relates in particular to the Power Quality Detection device.
Background technology
At present, recognize at large all both at home and abroad that the electrical network quality of power supply event more than 70% is all owing to voltage dip causes.
Falling temporarily of power supply buses voltage will cause the adverse consequences of two aspects.The one, hinder or destroyed the normal operating conditions of other consumer in the distribution system, will produce serious consequence for those to the very sensitive load of voltage dip especially.For example, when voltage dip to 80% when following of rated voltage, the server of computer system will be paralysed, client computer loss of data occurs or makes mistakes etc.; When voltage dip to 50% when following of rated voltage, most of contactor will be threaded off, Programmable Logic Controller PLC will quit work etc.The 2nd, the terminal voltage of motor can not guarantee the needed starting moment of motor itself, thereby makes the result that motor finally can not be started.
The utility model content
The purpose of this utility model is, provides a kind of Power Quality Detection device, to solve the problems of the technologies described above.
The technical matters that the utility model solves can realize by the following technical solutions:
A kind of Power Quality Detection device comprises a voltage check device, it is characterized in that, the measuring junction of described voltage check device connects electrical network to be measured;
The Power Quality Detection device also comprises a motor, and the clutch end of described motor connects a load, and the feeder ear of described motor connects described electrical network to be measured.The utility model can utilize the trigger voltage variation of motor to the influence of line voltage to be measured, finishes network voltage detection to be measured, simple in structure, measurement convenience.
Described Power Quality Detection device also comprises a microprocessor system, and the measuring-signal input end of described microprocessor system connects the measuring-signal output terminal of a voltage detection module;
The control signal output terminal of described microprocessor system connects the control signal input end of a trigger voltage control module, and described trigger voltage control module connects described motor, and described trigger voltage control module is provided with an autotransformer.
After adopting such scheme, motor can adopt direct-on-line starting and two kinds of Starting mode of reduced-voltage starting, adopt the direct-on-line starting mode, starting moment is big, starting time is short, but starting current is big, and the voltage dip that causes is big, be applicable to that net capacity is big, the motor starting that the motor rated capacity is less relatively.Adopt the reduced-voltage starting mode, its thinking is during starts to reduce the terminal voltage level of motor at motor, thereby reduction starting current, when reducing starting to the impact of voltage, but starting moment also decreases, the result that may cause motor not started, and the starting time will prolong in the motor starting process each bar busbar voltage variation tendency unanimity; Along with the increase of leaving motor starting bus electrical distance, the voltage dip degree that causes will reduce.The utility model can be done complete detection to line voltage under two kinds of Starting mode.
The preferred synchronous motor of described motor, as a kind of preferred version, it is 14950kW that described synchronous motor adopts output rating, and rated voltage is 10kV, rated current is 879A, rated power factor is 1, and rated efficiency is 98.25%, and rotor type is the mouse cage cast-aluminum rotor, number of pole-pairs is 2, synchronous rotational speed is 1500r/min, and nominal torque is 95200NM, and moment of inertia is 2990kgm
2Synchronous motor.
Described load is preferably air compressor.
Described Power Quality Detection device also is provided with a human-computer interaction module, and described human-computer interaction module connects described microprocessor system.The humorous wave mass of circuit-under-test can be known on the one hand by human-computer interaction module, the acquisition parameter of data acquisition module can be adjusted on the other hand.
Described Power Quality Detection device also is provided with a wireless communication module, and described wireless communication module connects described microprocessor system.Described Power Quality Detection device externally sends testing result by wireless communication module.
Description of drawings
Fig. 1 is circuit block diagram of the present utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose with effect is easy to understand, below in conjunction with the further elaboration the utility model of concrete diagram.
With reference to Fig. 1, a kind of Power Quality Detection device comprises a voltage check device, and the measuring junction of voltage check device connects electrical network to be measured; The Power Quality Detection device also comprises a motor, and the clutch end of motor connects a load, and the feeder ear of motor connects electrical network to be measured.The utility model can utilize the trigger voltage variation of motor to the influence of line voltage to be measured, finishes network voltage detection to be measured, simple in structure, measurement convenience.
The Power Quality Detection device also comprises a microprocessor system, and the measuring-signal input end of microprocessor system connects the measuring-signal output terminal of voltage detection module; The control signal output terminal of microprocessor system connects the control signal input end of a trigger voltage control module, and the trigger voltage control module connects motor, and the trigger voltage control module is provided with an autotransformer.The Power Quality Detection device also is provided with a human-computer interaction module, and human-computer interaction module connects the microprocessor system.The humorous wave mass of circuit-under-test can be known on the one hand by human-computer interaction module, the acquisition parameter of data acquisition module can be adjusted on the other hand.The Power Quality Detection device also is provided with a wireless communication module, and wireless communication module connects the microprocessor system.The Power Quality Detection device externally sends testing result by wireless communication module.
After adopting such scheme, motor can adopt direct-on-line starting and two kinds of Starting mode of reduced-voltage starting, adopt the direct-on-line starting mode, starting moment is big, starting time is short, but starting current is big, and the voltage dip that causes is big, be applicable to that net capacity is big, the motor starting that the motor rated capacity is less relatively.Adopt the reduced-voltage starting mode, its thinking is during starts to reduce the terminal voltage level of motor at motor, thereby reduction starting current, when reducing starting to the impact of voltage, but starting moment also decreases, the result that may cause motor not started, and the starting time will prolong in the motor starting process each bar busbar voltage variation tendency unanimity; Along with the increase of leaving motor starting bus electrical distance, the voltage dip degree that causes will reduce.The utility model can be done complete detection to line voltage under two kinds of Starting mode.
As a kind of preferred version, motor is synchronous motor, and to adopt output rating be 14950kW, and rated voltage is 10kV, rated current is 879A, rated power factor is 1, and rated efficiency is 98.25%, and rotor type is the mouse cage cast-aluminum rotor, number of pole-pairs is 2, synchronous rotational speed is 1500r/min, and nominal torque is 95200NM, and moment of inertia is 2990kgm
2Synchronous motor.Load is air compressor.
In service in actual installation, work such as the selection that can carry out start mode according to compensation way and the motor characteristics of reality and setting is to prevent the pollution to the electrical network quality of power supply.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the instructions just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (7)
1. a Power Quality Detection device comprises a voltage check device, it is characterized in that, the measuring junction of described voltage check device connects electrical network to be measured;
The Power Quality Detection device also comprises a motor, and the clutch end of described motor connects a load, and the feeder ear of described motor connects described electrical network to be measured.
2. a kind of Power Quality Detection device according to claim 1, it is characterized in that, described Power Quality Detection device also comprises a microprocessor system, and the measuring-signal input end of described microprocessor system connects the measuring-signal output terminal of a voltage detection module;
The control signal output terminal of described microprocessor system connects the control signal input end of a trigger voltage control module, and described trigger voltage control module connects described motor, and described trigger voltage control module is provided with an autotransformer.
3. a kind of Power Quality Detection device according to claim 1 is characterized in that, described motor is synchronous motor.
4. a kind of Power Quality Detection device according to claim 3, it is characterized in that it is 14950kW that described synchronous motor adopts output rating, rated voltage is 10kV, rated current is 879A, rated power factor is 1, and rated efficiency is 98.25%, and rotor type is the mouse cage cast-aluminum rotor, number of pole-pairs is 2, synchronous rotational speed is 1500r/min, and nominal torque is 95200NM, and moment of inertia is 2990kgm
2Synchronous motor.
5. a kind of Power Quality Detection device according to claim 1 is characterized in that, described load is air compressor.
6. a kind of Power Quality Detection device according to claim 2 is characterized in that, described Power Quality Detection device also is provided with a human-computer interaction module, and described human-computer interaction module connects described microprocessor system.
7. a kind of Power Quality Detection device according to claim 2 is characterized in that, described Power Quality Detection device also is provided with a wireless communication module, and described wireless communication module connects described microprocessor system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320154035 CN203191471U (en) | 2013-03-30 | 2013-03-30 | Electric energy quality detection apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320154035 CN203191471U (en) | 2013-03-30 | 2013-03-30 | Electric energy quality detection apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203191471U true CN203191471U (en) | 2013-09-11 |
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ID=49108323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320154035 Expired - Lifetime CN203191471U (en) | 2013-03-30 | 2013-03-30 | Electric energy quality detection apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN203191471U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685335A (en) * | 2021-08-27 | 2021-11-23 | 广东鑫钻节能科技股份有限公司 | Safe energy-saving air compression station with power quality monitoring system |
-
2013
- 2013-03-30 CN CN 201320154035 patent/CN203191471U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685335A (en) * | 2021-08-27 | 2021-11-23 | 广东鑫钻节能科技股份有限公司 | Safe energy-saving air compression station with power quality monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130911 |