CN208433876U - A kind of generator shaft voltage, shaft current measuring device and the generating set containing it - Google Patents
A kind of generator shaft voltage, shaft current measuring device and the generating set containing it Download PDFInfo
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- CN208433876U CN208433876U CN201820781477.1U CN201820781477U CN208433876U CN 208433876 U CN208433876 U CN 208433876U CN 201820781477 U CN201820781477 U CN 201820781477U CN 208433876 U CN208433876 U CN 208433876U
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- shaft
- generator
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- measuring device
- carbon brush
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Abstract
The utility model discloses a kind of generator shaft voltage, shaft current measuring device and containing its generating set, measuring device includes power supply, remote control switch, contactor, current transformer, pressure measuring instrument；Contactor has contactor coil, normally-closed contact and normally opened contact；Power supply, remote control switch and contactor coil form circuit；The normally-closed contact and current transformer of contactor connect to form shaft current measuring circuit；The normally opened contact and pressure measuring instrument of contactor connect to form shaft-voltage measurement circuit；Shaft current measuring circuit and shaft-voltage measurement circuit in parallel form parallel circuit, parallel circuit one end ground connection, and the other end is connected with the grounding carbon brush of generator；Current transformer, pressure measuring instrument can telecommunication.The utility model can realize generator shaft voltage, the long-range, real-time of shaft current, on-line measurement, and without live manual measurement, structure is simple, is suitable for popularization and application.
Description
Technical field
The utility model relates to electrical generator fields, more particularly to a kind of generator shaft voltage, shaft current measuring device and
Contain its generating set.
Background technique
Currently, being measured for the generator shaft voltage of traditional energy power field (such as water power, thermoelectricity), shaft current, often
Equipment is monitored online using a whole set of more complicated shaft voltage, shaft current.For field of new energy generation, since China is at this
A little area research times are short, to the on-line monitoring of high-power generator shaft voltage, shaft current, there is no mature technical equipment, still
By the way of live manual measurement.
In field of new energy generation, such as marine tidal-current energy power generation, wind-power electricity generation, since generator local environment is special, measurement
Personnel can not be under generator full power operation state, and scene carries out manual measurement.The generator of traditional energy power field
Shaft voltage shaft current on-site monitoring equipment, equipment cost, installation space is larger, height etc. is required to use environment due to, no
It may be directly used on the generator of generation of electricity by new energy industry.
Such generator can only be measured before factory at present, subsequent using live manual measurement, by environment, personal safety
Etc. objective condition limitation, especially to the generator under full power state, can not accomplish the real time monitoring to shaft voltage, shaft current.
It can be seen that above-mentioned existing generator shaft voltage, shaft current measuring device are upper in structure, method and use, show
So there are still there is inconvenient and defect, and need to be further improved.How to found it is a kind of can remotely operate be suitable for it is new
Energy power industry high-power generator shaft voltage, shaft current in real time, the measuring device of on-line measurement, become current industry urgent need
Improved target.
Utility model content
The new energy that is suitable for that first technical problem to be solved in the utility model is to provide one kind and can remotely operate is sent out
Electric industry high-power generator shaft voltage, shaft current in real time, the measuring device of on-line measurement, especially to be suitable for environment special,
The generator of inconvenient scene manual measurement.
Second technical problem to be solved in the utility model is to provide a kind of achievable long-range, real time on-line monitoring power generation
The generating set of arbor voltage, shaft current.
In order to solve the above technical problems, the utility model adopts the following technical solution:
A kind of generator shaft voltage, shaft current measuring device, including power supply, remote control switch, contactor, Current Mutual Inductance
Device, pressure measuring instrument；The contactor has contactor coil, normally-closed contact and normally opened contact；
The power supply, remote control switch and contactor coil form circuit；
The normally-closed contact and current transformer of the contactor connect to form shaft current measuring circuit；The contactor it is normal
It opens contact and pressure measuring instrument connects to form shaft-voltage measurement circuit；Shaft current measuring circuit and shaft-voltage measurement circuit in parallel shape
At parallel circuit, described parallel circuit one end is for being grounded, and the other end with the grounding carbon brush of generator for being connected；
The current transformer, pressure measuring instrument can telecommunication.
It is further improved as the utility model, the grounding carbon brush includes driving end grounding carbon brush and non-driven termination
Ground carbon brush, accordingly, including two sets of parallel circuits, one end of a set of parallel circuit are used to be connected with driving end grounding carbon brush, separately
One end of a set of parallel circuit with anti-drive end grounding carbon brush for being connected.
Further, AC or DC power, preferably 24V DC power supply can be used in the power supply.
The utility model additionally provides a kind of generating set, described including the grounding carbon brush on generator and generator shaft
Grounding carbon brush further includes above-mentioned generator shaft voltage, shaft current measuring device, the measuring device connection by wire ground
Between the lead and grounding point of grounding carbon brush.
Further improved as the utility model, the generating set further includes master control system, the master control system with
Remote control switch, current transformer, pressure measuring instrument communication connection.
Further, the measuring device is integrated in the auxiliary outlet box of generator.
Further, the measuring device is mounted on generator pit side as independent measuring apparatus.
Further, the generating set is generation of electricity by new energy unit.
Further, the generation of electricity by new energy unit is wind power generating set.
Further, the generation of electricity by new energy unit is marine tidal-current energy generator group.
By using above-mentioned technical proposal, the utility model at least has the following advantages:
1, the generator shaft voltage of the utility model, shaft current measuring device, design have shaft voltage, shaft current measurement electricity
Road, and it is correspondingly arranged on grounding carbon brush connecting pin and ground terminal, allow to connect for generating set by modifying grounding carbon brush
Grounding carbon brush lead is accessed the measurement pattern of generator shaft voltage, shaft current measuring device, realized by the mode of place position
The function of long-range control real-time measurement generator shaft voltage, shaft current.
2, the utility model greatly facilitates monitoring personnel in generator full state by design remote controlled manner
Lower real-time monitoring shaft voltage, shaft current.On the one hand the real-time, accuracy and ease for operation of measured value be ensure that, on the other hand,
The downtime for shortening measurement generator shaft voltage, shaft current, improves generated energy.Meanwhile also ensuring survey crew's
Personal safety safety.Suitable for generation of electricity by new energy industry high-power generator shaft voltage, shaft current real-time measurement, especially
It is special suitable for environment, the generator of inconvenient scene manual measurement.
Detailed description of the invention
Above-mentioned is only the general introduction of technical solutions of the utility model, in order to better understand the technology hand of the utility model
Section, below in conjunction with attached drawing, the utility model is described in further detail with specific embodiment.
Fig. 1 is the electrical schematic diagram of generator shaft voltage in the utility model embodiment, shaft current measuring device.
Specific embodiment
As shown in Figure 1, the utility model embodiment provides a kind of generator shaft voltage, shaft current measuring device, including
Power supply, remote control switch, contactor KM1, Current Transmit, pressure measuring instrument；Contactor KM1 have contactor coil,
Normally-closed contact and normally opened contact.
Wherein, power supply, remote control switch and contactor coil form circuit.The normally-closed contact and electric current of contactor KM1
Mutual inductor CT connects to form shaft current measuring circuit；The normally opened contact and pressure measuring instrument of contactor KM1 connects to form shaft voltage
Measuring circuit；Shaft current measuring circuit and shaft-voltage measurement circuit in parallel form parallel circuit, and parallel circuit one end is used to be grounded,
The other end with the grounding carbon brush of generator for being connected；Current Transmit, pressure measuring instrument can telecommunication.
Above-mentioned generator shaft voltage, shaft current measuring device use remote control switch control contactor coil, using connecing
The normally-closed contact and normally opened contact switching electric current mutual inductor and pressure measuring instrument of tentaculum, the axis of generator is measured by grounding carbon brush
Voltage, shaft current value realize that shaft-voltage measurement and shaft current measure function；Current transformer and pressure measuring instrument are by remotely leading to
News can feed back measured value.
Using above-mentioned measuring device measure when, can by above-mentioned measuring device access generator shaft grounding carbon brush lead with
Between grounding point.The master control system of remote control switch, current transformer, pressure measuring instrument and generating set is communicated.
Measurement procedure when specific measurement is as follows:
A) under normal condition, remote control switch is opened, and contactor coil circuit no current, contactor normally-closed contact closes
It closes, for state as shown in Figure 1, shaft current measuring circuit is connected, shaft current measured value is fed back to master control system by current transformer.
B) under normal circumstances, to guarantee that shaft current is normally released to the earth, shaft-voltage measurement circuit is not turned on.When monitoring
When shaft current exception occurs or needs to test shaft voltage, remote control switch, contactor are closed by the console of master control system
Coil obtains electric, contactor movement.Normally-closed contact is opened, and shaft current measuring circuit is disconnected；Normally opened contact closure is connected shaft voltage and is surveyed
Measure circuit.Shaft-voltage measurement value is fed back to master control system by the pressure measuring instrument that can be communicated.
C) after master control system obtains shaft voltage value, control remote control switch resets to open position, entire measuring device
Interior device is restored to state in a).
The above-mentioned measuring device of the present embodiment, it is preferable that be provided with two sets of parallel circuits, i.e., containing there are two normally-closed contact,
Two normally opened contacts, two current transformers, two pressure measuring instruments can be by a set of parallel connections by using two sets of parallel circuits
One end of circuit is connected with driving end grounding carbon brush, and one end of another set of parallel circuit is connected with anti-drive end grounding carbon brush.It can
Voltage, current measurement with realization to generator drive end and anti-drive end axis, measurement effect are good.
Above-mentioned power supply, can be used AC or DC power, it is preferred to use 24V DC power supply facilitates reality as power supply
With.
Above-mentioned measuring device can be integrated in the auxiliary outlet box of generator, can also according to actual needs, as independent survey
Device is measured, generator pit side is mounted on.
Above-mentioned measuring device can be used in generation of electricity by new energy unit, carry out the measurement of generator shaft electric current, shaft voltage, preferably
Suitable for wind power generating set and marine tidal-current energy generator group.
The generator shaft electric current, shaft-voltage measurement device of the utility model, are provided with grounding carbon brush connecting pin and ground connection connects
End is connect, is connected between the lead and grounding point of generator grounding carbon brush, the generating set being arranged by this kind, by conventional electric power generation
Unit is changed to by measurement point of shaft to grounding point by grounding carbon brush lead to grounding point；It, will by extending grounding carbon brush lead
The lead of both ends of the shaft grounding carbon brush is changed to be grounded by shaft voltage, shaft current measuring device, lead to by being grounded nearby in end cap
Cross shaft voltage, the shaft current of measuring device real time remote measurement generator.
The utility model greatly facilitates monitoring personnel under generator full state by design remote controlled manner
Real-time monitoring shaft voltage, shaft current.On the one hand the real-time, accuracy and ease for operation of measured value, on the other hand, contracting be ensure that
The downtime of short measurement generator shaft voltage shaft current, improves generated energy.Meanwhile also ensuring the person of survey crew
Safety safety, structure is simple, is suitable for popularization and application.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation, those skilled in the art make a little simple modification, equivalent variations or modification using the technology contents of the disclosure above,
It falls within the protection scope of the present utility model.
Claims (10)
1. a kind of generator shaft voltage, shaft current measuring device, which is characterized in that including power supply, remote control switch, contact
Device, current transformer, pressure measuring instrument；The contactor has contactor coil, normally-closed contact and normally opened contact；
The power supply, remote control switch and contactor coil form circuit；
The normally-closed contact and current transformer of the contactor connect to form shaft current measuring circuit；The normally opened touching of the contactor
Point and pressure measuring instrument connect to form shaft-voltage measurement circuit；Shaft current measuring circuit and shaft-voltage measurement circuit in parallel are formed simultaneously
Join circuit, described parallel circuit one end is for being grounded, and the other end with the grounding carbon brush of generator for being connected；
The current transformer, pressure measuring instrument can telecommunication.
2. generator shaft voltage according to claim 1, shaft current measuring device, which is characterized in that the grounding carbon brush
Including driving end grounding carbon brush and anti-drive end grounding carbon brush, accordingly, including two sets of parallel circuits, the one of a set of parallel circuit
End with driving end grounding carbon brush for being connected, and one end of another set of parallel circuit with anti-drive end grounding carbon brush for being connected.
3. generator shaft voltage according to claim 1 or 2, shaft current measuring device, which is characterized in that the power supply is
24V DC power supply.
4. a kind of generating set, including the grounding carbon brush on generator and generator shaft, the grounding carbon brush passes through wire ground,
It further include the described in any item generator shaft voltages of claim 1-3, shaft current measuring device, the measuring device, which is connected to, to be connect
Between the lead and grounding point of ground carbon brush.
5. generating set according to claim 4, which is characterized in that it further include master control system, the master control system and remote
Process control switch, current transformer, pressure measuring instrument communication connection.
6. generating set according to claim 4 or 5, which is characterized in that the measuring device is integrated in the auxiliary of generator
It helps in outlet box.
7. generating set according to claim 4 or 5, which is characterized in that the measuring device as independent measuring apparatus,
It is mounted on generator pit side.
8. generating set according to claim 4 or 5, which is characterized in that the generating set is generation of electricity by new energy unit.
9. generating set according to claim 8, which is characterized in that the generation of electricity by new energy unit is wind-driven generator
Group.
10. generating set according to claim 8, which is characterized in that the generation of electricity by new energy unit is marine tidal-current energy power generation
Unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820781477.1U CN208433876U (en) | 2018-05-24 | 2018-05-24 | A kind of generator shaft voltage, shaft current measuring device and the generating set containing it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820781477.1U CN208433876U (en) | 2018-05-24 | 2018-05-24 | A kind of generator shaft voltage, shaft current measuring device and the generating set containing it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208433876U true CN208433876U (en) | 2019-01-25 |
Family
ID=65102192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820781477.1U Active CN208433876U (en) | 2018-05-24 | 2018-05-24 | A kind of generator shaft voltage, shaft current measuring device and the generating set containing it |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208433876U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11569712B2 (en) | 2021-04-05 | 2023-01-31 | General Electric Renovables Espana, S.L. | System and method for detecting bearing insulation and ground brush health in a generator |
-
2018
- 2018-05-24 CN CN201820781477.1U patent/CN208433876U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11569712B2 (en) | 2021-04-05 | 2023-01-31 | General Electric Renovables Espana, S.L. | System and method for detecting bearing insulation and ground brush health in a generator |
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