CN206515392U - Ship Electrical Power System Harmonic Detecting Device - Google Patents
Ship Electrical Power System Harmonic Detecting Device Download PDFInfo
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- CN206515392U CN206515392U CN201720196422.XU CN201720196422U CN206515392U CN 206515392 U CN206515392 U CN 206515392U CN 201720196422 U CN201720196422 U CN 201720196422U CN 206515392 U CN206515392 U CN 206515392U
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Abstract
A kind of Ship Electrical Power System Harmonic Detecting Device, including the input of Hall voltage sensor, Hall current sensor, sensor and Signal-regulated kinase, analog to digital conversion circuit, AD mode configuration units, sampling pulse generator, transformation result read control unit, control signal Logical processing unit, signal analysis and assessment unit, memory cell and power module.Hall voltage sensor, Hall current sensor are used for collection voltages and current signal, inputted respectively by sensor and the signal input part of Signal-regulated kinase and analog to digital conversion circuit is connected, analog to digital conversion circuit is read control unit, control signal Logical processing unit by AD mode configuration units, sampling pulse generator, transformation result and is connected with signal analysis with assessment unit, memory cell is connected with signal analysis with assessment unit, and power module is to provide working power.The utility model can complete the identification to a variety of disturbance informations, extract and analyze, so as to complete Detecting Power Harmonicies function.
Description
Technical field
The utility model is related to power monitoring field, specifically a kind of Ship Electrical Power System Harmonic Detecting Device.
Background technology
Ship Electrical Power System belongs to independent, large-scale complete power system, power load type various with operating condition
The frequent degree of numerous the characteristics of, its electric load excursion and change, it is more much greater than terrestrial systems.On the one hand, from electricity
Generator capacity is smaller in web frame and power load specificity analysis, ship isolated power network, with the distance between power load compared with
Closely, cause influence of the power load to system larger.The nonlinear loads such as radar, navigation, particularly converter plant, aviation intermediate frequency
Power supply is used using the Relatively centralized of a large amount of power electronic equipments such as steady inverter of power electronics so that the voltage wave of power network
Shape is distorted, and causes serious time-variant harmonic and m-Acetyl chlorophosphonazo problem, severe contamination is caused to the power supply quality of network of ship.It is humorous
Ripple can cause the amplification of resonance harmonic electric current.In order to compensate the reactive power of load, power factor etc. is improved, often can be in system
Under the capacitor of middle installing various uses, power frequency, the capacitive reactance of capacitor is more much bigger than the induction reactance of system, will not occur resonance.But
When power network has harmonic wave, for resonant frequency, system induction reactance is greatly increased and capacitive reactance is greatly reduced, it is possible to produced humorous
Shake, resonance can make even tens times of several times of amplified harmonic current, capacitor overcurrent and overload is occurred, temperature increases, easily
The equipment such as capacitor are caused to be burned out.On the other hand, it is the information-based and intellectuality of guarantee ship, is largely based on microprocessor system
Electric device, control device and the network equipment of system are widely used on ship, and these devices are to electric power quality problem, especially
Dynamic power quality problem is very sensitive.And the work of these sensitive equipment very short times is abnormal to be made inside ship
Into confusion, navigation safety is had a strong impact on.
In summary, it is necessary to take appropriate action to monitor the quality of power supply in power network, particularly grid equipment injection
Harmonic wave, it is met the requirement that marine vessel power equipment is normally run.
The content of the invention
The utility model provides a kind of Ship Electrical Power System Harmonic Detecting Device, can to the monitoring of network wave data with
Analysis, the overall power supply quality situation of power network can be reflected from global angle, passes through the specific features pair to mains by harmonics index
Mains by harmonics carries out layered method analysis, completes the identification to a variety of disturbance informations, extracts and analyze, so as to complete Detecting Power Harmonicies
Function.
A kind of Ship Electrical Power System Harmonic Detecting Device, it is characterised in that：Passed including Hall voltage sensor, Hall current
Sensor, sensor input and Signal-regulated kinase, analog to digital conversion circuit, AD mode configuration units, sampling pulse generator, conversion
As a result control unit, control signal Logical processing unit, signal analysis and assessment unit, memory cell and power module are read, suddenly
That voltage sensor, Hall current sensor are arranged on the cable of the acquisition node of Ship Electrical Power System, for collection voltages
And current signal, Hall voltage sensor, Hall current sensor pass through sensor input and Signal-regulated kinase and mould respectively
The signal input part connection of number change-over circuit, analog to digital conversion circuit passes through AD mode configuration units, sampling pulse generator, conversion
As a result read control unit, control signal Logical processing unit to be connected with signal analysis with assessment unit, memory cell and signal point
Analysis is connected with assessment unit, power module and Hall voltage sensor, Hall current sensor, control signal Logical processing unit
Signal analysis is connected with assessment unit, to provide working power.
Further, signal analysis in assessment unit with being additionally provided with UART units, CAN unit, and UART units are used for
It is connected with outside debugging module, is used as equipment debugging port；CAN unit is used to gateway connect by light-coupled isolation unit
Connect, the data after analysis and assessment are uploaded into gateway.
Further, AD mode configuration units are configured for the mode of operation of analog to digital conversion circuit, sampling pulse hair
Raw device is used to control the working condition of analog to digital conversion circuit to change.
The utility model has the following advantages that：
1st, because Ship Electrical Power System generally uses three-phase three-wire system, without the neutral conductor, in the absence of zero-sequence current, therefore it is humorous
Ripple monitoring device need to only gather two-way line voltage or two-way phase current, and three tunnels can be derived by the program calculation of inside modules
AC voltage/current signal, reduces the quantity of acquisition interface, reduces hardware design difficulty and cost；
2nd, conventional sensors are replaced to measure between direct current and AC signal, former secondary circuit with good using Hall sensor
Good electrical isolation, measurement accuracy is high, and the linearity is good, and the measurement range of voltage and current can reach several kilovolts and tens respectively
Kilo-ampere, and its bandwidth is very big, can completely transmit the higher harmonic component in signal；
3rd, because Hall sensor needs externally fed, to reduce the complicated property of wiring, its power supply is filled by Detecting Power Harmonicies
The output signal for there are a pair of Hall sensors in centralizedly supply, each M12 terminals and a pair of ± 15V power supply signal are put, each
Module only need to access a direct current 24V voltage signal can output multi-channel ± 15V Hall sensor power supply signal, simply
It is convenient；
4th, Harmonic Detecting Device is transmitted using CAN fieldbus, because marine communication nodal distance is nearer, typically not greater than
200m, therefore transmission rate can reach that the nodes on 250kbit/s, CAN can at most connect up to a hundred, message uses short frame
Structure, transmission time is short, and real-time is good, strong antijamming capability, and CRC check mode can effectively reduce the bit error rate；
5th, contour structures are simple, size is small, lightweight, employ advanced embedded technology, field bus technique and low
Power consumption technology, respectively using high-performance processor and real time operating system as hardware core and exploitation sample platform, complete equipment has
High-protection level.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model Ship Electrical Power System Harmonic Detecting Device.
In figure：1-Hall voltage sensor, 2-Hall current sensor, the input of 3-sensor and Signal-regulated kinase,
4-analog to digital conversion circuit, 5-AD mode configuration units, 6-sampling pulse generator, 7-transformation result reading control unit, 8-
Control signal Logical processing unit, 9-signal analysis and assessment unit, 10-sram cell, 11-Nand Flash units,
91-UART units, 92-CAN unit, 12-power module.
Embodiment
Below in conjunction with the accompanying drawing in the utility model, the technical scheme in the utility model is carried out clearly and completely
Description.
Fig. 1 show the structural representation of the utility model Ship Electrical Power System Harmonic Detecting Device, the marine vessel power
System harmonicses monitoring device includes Hall voltage sensor 1, Hall current sensor 2, sensor input and Signal-regulated kinase
3rd, analog to digital conversion circuit 4, AD mode configuration units 5, sampling pulse generator 6, transformation result read control unit 7, control signal
Logical processing unit 8, signal analysis and assessment unit 9, memory cell and power module 12.
Hall voltage sensor 1, Hall current sensor 2 are arranged on the cable of the acquisition node of Ship Electrical Power System,
For collection voltages and current signal, Hall voltage sensor 1, Hall current sensor 2 are inputted and believed by sensor respectively
Number conditioning module 3 is connected with the signal input part of analog to digital conversion circuit 4, analog to digital conversion circuit 4 by AD mode configuration units 5,
Sampling pulse generator 6, transformation result read control unit 7, control signal Logical processing unit 8 and signal analysis and assessment unit
9 connections, memory cell is connected with signal analysis with assessment unit 9, and power module 12 is powered using common DC24V, through inside
It is changed into ± 15V voltage signal after modulation, is that Hall voltage sensor 1, Hall current sensor 2, analog to digital conversion circuit 4 are supplied
Electricity, powers for control signal Logical processing unit 8 while being changed into+5V voltages after inner modulation, changes after inner modulation
It is that signal analysis is powered with assessment unit 9 for+3.3V voltages.
Be additionally provided with UART units 91, CAN unit 92 in signal analysis and assessment unit 9, UART units 91 be used for
Outside debugging module connection, is used as equipment debugging port；CAN unit 92 is used to gateway connect by light-coupled isolation unit
Connect, the data after analysis and assessment are uploaded into gateway, processing is further analyzed by upper layer software (applications).
Operation principle of the present utility model is described below：
Each acquisition node gathers AB, CA line voltage using Hall voltage sensor 1, is adopted using Hall current sensor 2
Collect A phase currents, C phase currents, voltage, current signal are inputted by sensor and Signal-regulated kinase 3 enters analog to digital conversion circuit 4
(such as analog-digital converter 7606).Analog to digital conversion circuit 4 is changed under the control of sampling pulse generator 6, conversion end
Primary processor CPU is interrupted afterwards, primary processor CPU, which enters, to interrupt, read to read AD conversion under the control of control unit 7 in transformation result
As a result, mode of operation of the AD mode configuration units 5 also to analog to digital conversion circuit 4 is configured in addition, then primary processor CPU roots
The specific features of mains by harmonics index are directed to according to the data of collection, layered method analysis is carried out to mains by harmonics, completed to a variety of
Identification, extraction and the analysis of disturbance information, so as to complete Detecting Power Harmonicies function, then show the data of analysis and assessment according to CAN
Field bus agreement encapsulate data waiting uploads to gateway by CAN unit 92, is analyzed and processed by upper layer software (applications).
The utility model has the following advantages that：
1st, because Ship Electrical Power System generally uses three-phase three-wire system, without the neutral conductor, in the absence of zero-sequence current, therefore it is humorous
Ripple monitoring device need to only gather two-way line voltage or two-way phase current, and three tunnels can be derived by the program calculation of inside modules
AC voltage/current signal, reduces the quantity of acquisition interface, reduces hardware design difficulty and cost；
2nd, conventional sensors are replaced to measure between direct current and AC signal, former secondary circuit with good using Hall sensor
Good electrical isolation, measurement accuracy is high, and the linearity is good, and the measurement range of voltage and current can reach several kilovolts and tens respectively
Kilo-ampere, and its bandwidth is very big, can completely transmit the higher harmonic component in signal；
3rd, because Hall sensor needs externally fed, to reduce the complicated property of wiring, its power supply is filled by Detecting Power Harmonicies
The output signal for there are a pair of Hall sensors in centralizedly supply, each M12 terminals and a pair of ± 15V power supply signal are put, each
Module only need to access a direct current 24V voltage signal can output multi-channel ± 15V Hall sensor power supply signal, simply
It is convenient；
4th, Harmonic Detecting Device is transmitted using CAN fieldbus, because marine communication nodal distance is nearer, typically not greater than
200m, therefore transmission rate can reach that the nodes on 250kbit/s, CAN can at most connect up to a hundred, message uses short frame
Structure, transmission time is short, and real-time is good, strong antijamming capability, and CRC check mode can effectively reduce the bit error rate；
5th, contour structures are simple, size is small, lightweight, employ advanced embedded technology, field bus technique and low
Power consumption technology, respectively using high-performance processor and real time operating system as hardware core and exploitation sample platform, complete equipment has
High-protection level.
It is described above, embodiment only of the present utility model, but protection domain of the present utility model do not limit to
It is any to belong to those skilled in the art in the technical scope that the utility model is disclosed in this, the change that can be readily occurred in
Change or replace, should all cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with power
The protection domain that profit is required is defined.
Claims (3)
1. a kind of Ship Electrical Power System Harmonic Detecting Device, it is characterised in that：Including Hall voltage sensor (1), Hall current
Sensor (2), sensor input and Signal-regulated kinase (3), analog to digital conversion circuit (4), AD mode configuration units (5), sampling
Impulse generator (6), transformation result read control unit (7), control signal Logical processing unit (8), signal analysis with assessing list
First (9), memory cell and power module (12), Hall voltage sensor (1), Hall current sensor (2) are arranged on ship electricity
On the cable of the acquisition node of Force system, for collection voltages and current signal, Hall voltage sensor (1), Hall current are passed
Sensor (2) is connected by sensor input and Signal-regulated kinase (3) with the signal input part of analog to digital conversion circuit (4) respectively,
Analog to digital conversion circuit (4) by AD mode configuration units (5), sampling pulse generator (6), transformation result read control unit (7),
Control signal Logical processing unit (8) is connected with signal analysis with assessment unit (9), and memory cell is single with assessing with signal analysis
First (9) connection, power module (12) and Hall voltage sensor (1), Hall current sensor (2), control signal logical process
Unit (8) signal analysis is connected with assessment unit (9), to provide working power.
2. Ship Electrical Power System Harmonic Detecting Device as claimed in claim 1, it is characterised in that：Signal analysis and assessment unit
(9) UART units (91), CAN unit (92) are additionally provided with, UART units (91) are used to be connected with outside debugging module, made
For equipment debugging port；CAN unit (92) is used to be connected with gateway by light-coupled isolation unit, by the number after analysis and assessment
According to uploading to gateway.
3. Ship Electrical Power System Harmonic Detecting Device as claimed in claim 1, it is characterised in that：AD mode configuration units (5)
Mode of operation for analog to digital conversion circuit (4) is configured, and sampling pulse generator (6) is used to control analog to digital conversion circuit
Working condition is changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720196422.XU CN206515392U (en) | 2017-03-02 | 2017-03-02 | Ship Electrical Power System Harmonic Detecting Device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720196422.XU CN206515392U (en) | 2017-03-02 | 2017-03-02 | Ship Electrical Power System Harmonic Detecting Device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206515392U true CN206515392U (en) | 2017-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720196422.XU Active CN206515392U (en) | 2017-03-02 | 2017-03-02 | Ship Electrical Power System Harmonic Detecting Device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111650501A (en) * | 2020-03-04 | 2020-09-11 | 苏州热工研究院有限公司 | Testing device for nondestructive online evaluation of aging state of relay |
-
2017
- 2017-03-02 CN CN201720196422.XU patent/CN206515392U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111650501A (en) * | 2020-03-04 | 2020-09-11 | 苏州热工研究院有限公司 | Testing device for nondestructive online evaluation of aging state of relay |
| CN111650501B (en) * | 2020-03-04 | 2022-08-16 | 苏州热工研究院有限公司 | Testing device for nondestructive online evaluation of aging state of relay |
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