CN207318604U - A kind of load monitoring device for power distribution network - Google Patents
A kind of load monitoring device for power distribution network Download PDFInfo
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- CN207318604U CN207318604U CN201721264737.XU CN201721264737U CN207318604U CN 207318604 U CN207318604 U CN 207318604U CN 201721264737 U CN201721264737 U CN 201721264737U CN 207318604 U CN207318604 U CN 207318604U
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- distribution network
- power distribution
- sampling
- iron core
- monitoring device
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Abstract
It the utility model is related to a kind of load monitoring device for power distribution network; for gathering the information on load of power distribution network and being uploaded in main control computer; described device includes monitoring side, protection end and gripping module; the gripping module includes the first gripping handle, the second gripping handle and fixing buckle; the first gripping handle is connected with monitoring side; the second gripping handle is connected with protection end; the fixing buckle is connected with monitoring side and protection end respectively, and passes through the second through hole in the first through hole on the first gripping handle and the second gripping handle respectively；The monitoring side is including the second housing and the sampling component being encapsulated in second shell body and takes energy Power Supply Assembly, and the sampling component is connected with taking energy Power Supply Assembly to be connected with each other with the conducting wire of power distribution network.Compared with prior art, the utility model has the advantages that easy for installation, sampling precision is high and applied widely.
Description
Technical field
Distribution network monitoring field is the utility model is related to, more particularly, to a kind of load monitoring device for power distribution network.
Background technology
Developing with the high speed of Distribution Automation Technology, the requirement powered to the high-efficiency high-quality of power grid is higher and higher, because
And need to monitor the load of power distribution network in real time.Existing monitoring system is typically by the circuits at different levels of power distribution network
Set corresponding load monitoring device, by communicating with main control computer, the information on load monitored is uploaded in main control computer.
Existing load monitoring device has the following disadvantages：
1st, it is secured by bolts in outside conducting wire, dismounting is difficult and maintenance cost is high, and easily conducting wire is produced excessive
Pressure, causes the damage of conducting wire；
2nd, need external power supply to power during the signal sampling of monitoring device, limit the use distance of device, while also increase
Installation cost is added.
Utility model content
The purpose of this utility model is to provide a kind of load monitoring device for power distribution network regarding to the issue above.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of load monitoring device for power distribution network, for gathering the information on load of power distribution network and being uploaded to main control computer
In, described device includes monitoring side, protection end and gripping module, and the gripping module includes the first gripping handle, the second gripping handle
And fixing buckle, the first gripping handle are connected with monitoring side, the second gripping handle is connected with protection end, the fixing buckle difference
It is connected with monitoring side and protection end, and it is logical by second in the first through hole on the first gripping handle and the second gripping handle respectively
Hole；The monitoring side includes the second housing and the sampling component being encapsulated in second shell body and takes energy Power Supply Assembly, the sampling
Component is connected with taking energy Power Supply Assembly to be connected with each other with the conducting wire of power distribution network.
The sampling component includes sampling iron core and signal processing circuit plate, and the conducting wire of the sampling iron core and power distribution network connects
Connect, the signal processing circuit plate is connected with sampling iron core and main control computer respectively.
The signal processing circuit plate includes sequentially connected sampling processing circuit, microcontroller and miniature antenna, institute
State sampling processing circuit to be connected with sampling iron core, the miniature antenna is connected with main control computer.
The sampling processing circuit includes sequentially connected wave filter, signal sample circuit and analog-digital converter, the filter
Ripple device is connected with sampling iron core, and the analog-digital converter is connected with microcontroller.
The sampling iron core is equipped with sensor coil, and the sensor coil is connected with signal processing circuit plate.
The sensor coil is equipped with the first connecting pin, second connection end and the 3rd connecting pin, first connecting pin with
The electric current no-load voltage ratio that 3rd connecting pin lead is formed is 600/1, the electric current no-load voltage ratio that first connecting pin is formed with second connection end
For 100/1.
It is described to take energy Power Supply Assembly to include the inductive iron core and power supply circuit being connected with each other, the inductive iron core and power distribution network
Conducting wire connection, the power supply circuit is connected with sampling component.
The protection end includes the first housing and the LED illumination lamp that is arranged on the first housing, the LED illumination lamp with too
Positive energy solar panel connection, the solar panel are encapsulated in first shell body.
Compared with prior art, the utility model has the advantages that：
(1) module is gripped by setting, traditional load being bolted on outside power distribution network conducting wire can be supervised
Device is controlled, gripping is changed on power distribution network conducting wire, easy to the operation dismounting of staff；Set at the same time inside monitoring side and take energy
Power Supply Assembly, is acted on using the mutual inductance of power distribution network conducting wire, enough electric energy is provided for sampling component, external power supply is avoided and leads
The distance limitation of cause, expands the use scope of the present apparatus.
(2) sampling component is by sampling being sequentially connected for iron core, sampling processing circuit, microcontroller and miniature antenna,
Realize the current sample for power distribution network internal loading and remote transmission, be wirelessly transferred the signal sampled by miniature antenna
To main control computer, the limitation of distance can be broken away from, realizes being uniformly controlled for main control computer, the efficiency of increasing productivity monitoring.
(3) first and second range electric currents using component by sequentially connected current transformer, signal amplifier and
Current sample chip is realized, is amplified the current signal of collection by signal amplifier, avoid due to noise is excessive and caused by
Current sample distortion, improves sampling precision.
(4) sample iron core sensor coil be equipped with multiple connecting pins, can when load current as low as setting value,
Automatically switch on high-precision coil, improve sampling precision, increase the accuracy of monitoring.
(5) energy Power Supply Assembly is taken to include the inductive iron core and power supply circuit being connected with each other, the mutual inductance for passing through inductive iron core is made
With the electric energy obtained on power distribution network, and by the processing of power supply circuit, it is embodied as the power supply of sampling component, breaks away from external power supply
Limitation.
(6) protection end is equipped with the headlamp powered by solar cell bag, by being turned on daytime using solar energy
Change storage electric energy, the staff at night to be safeguarded and being repaired provides illumination, ensures the personal safety of staff.
Brief description of the drawings
Fig. 1 is the structure diagram of the load monitoring device for power distribution network；
Fig. 2 is the structure diagram of sampling component；
Wherein, 1 is monitoring side, and 2 be protection end, and 3 be the first gripping handle, and 4 be the second gripping handle, and 5 be fixing buckle, and 6 be filter
Ripple device, 7 be signal sample circuit, and 8 be analog-digital converter, and 9 be microcontroller, and 10 be miniature antenna, and 11 be the first connecting pin,
12 be second connection end, and 13 be the 3rd connecting pin.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with the utility model
Implemented premised on technical solution, give detailed embodiment and specific operating process, but the guarantor of the utility model
Shield scope is not limited to following embodiments.
As shown in Figure 1, it is a kind of load monitoring device for power distribution network provided in this embodiment, for gathering power distribution network
Information on load and be uploaded in main control computer, which includes monitoring side 1, protection end 2 and gripping module, and gripping module includes the
One gripping handle 3, second grips handle 4 and fixing buckle 5, and the first gripping handle 3 is connected with monitoring side 1, the second gripping handle 4 and protection end 2
Connection, fixing buckle 5 is connected with monitoring side 1 and protection end 2 respectively, and passes through the first through hole on the first gripping handle 3 and the respectively
The second through hole on two gripping handles 4；Monitoring side 1 includes the second housing and the sampling component being encapsulated in second shell body and takes and can supply
Electrical component, sampling component are connected with taking energy Power Supply Assembly to be connected with each other with the conducting wire of power distribution network.
Wherein, as shown in Fig. 2, sampling component includes sampling iron core and signal processing circuit plate, iron core and power distribution network are sampled
Conducting wire connection, signal processing circuit plate respectively with sampling iron core and main control computer be connected.Signal processing circuit plate includes connecting successively
Sampling processing circuit, microcontroller 9 and the miniature antenna 10 connect, sampling processing circuit are connected with sampling iron core, miniature antenna
10 are connected with main control computer.Sampling processing circuit includes sequentially connected wave filter 6, signal sample circuit 7 and analog-digital converter 8,
Wave filter 6 is connected with sampling iron core, and analog-digital converter 8 is connected with microcontroller 9.Sampling iron core is equipped with sensor coil, passes
Sense coil is connected with signal processing circuit plate.Sensor coil is equipped with the first connecting pin 11, second connection end 12 and the 3rd connects
The electric current no-load voltage ratio that end 13, the first connecting pin 11 and 13 lead of the 3rd connecting pin are formed is 600/1, and the first connecting pin 11 and second connects
It is 100/1 to connect the electric current no-load voltage ratio that end 12 is formed.Energy Power Supply Assembly is taken to include the inductive iron core and power supply circuit being connected with each other, sensing
The conducting wire of iron core and power distribution network connects, and power supply circuit is connected with sampling component.Protection end 2 includes the first housing and is arranged on first
LED illumination lamp on housing, LED illumination lamp are connected with solar panel, and solar panel is encapsulated in first shell body.
The operation principle of the device is as follows：Staff is by pressing the first gripping handle 3 and the second gripping handle 4 so that prison
Survey between end 1 and protection end 2 and be separated from each other, form opening, this opening is connected on the conducting wire of power distribution network by staff, load
Monitoring device is started to work, and is to take the inductive iron core of energy Power Supply Assembly and the conducting wire of power distribution network that mutual inductance effect occurs first, and will
The electric current that mutual inductance produces directly is passed to power supply circuit, and power supply circuit is power supply circuit common in the art, by electric current
It is transmitted to after carrying out current stabilization in the microcontroller 9 of sampling component, is embodied as the power supply of sampling component；On the other hand, iron is sampled
Electric current on core collection conducting wire, and the filtering, sampling and analog-to-digital conversion of sampling processing circuit are passed sequentially through, obtain microcontroller
9 readable sample rate currents, microcontroller 9, which docks received sample rate current, is kept in, and passes through control after preset value to be achieved
The signal transmission of collection into main control computer, is completed the monitoring to load by miniature antenna 10；Sampling iron core is equipped with sensor coil,
Sensor coil is equipped with the first connecting pin 11,12 and the 3rd connecting pin 13 of second connection end, and the first connecting pin 11 is connected with the 3rd
It is 600/1 to hold the electric current no-load voltage ratio that 13 leads are formed, and will be switched to when load current is small to setting value on high-precision coil, and tap is certainly
Dynamic switching, improves sampling precision.When electric current is smaller, sampling precision will be small, particularly when less than less than the 10% of rated current
When, while the trueness error of also sampling resistor capacitance mixes so that less than 10% current sample precision can decline very
It is more, it is impossible to meet the requirement of national standard, when load current is less than the 10% small no-load voltage ratio (small rated currents) of switching of load current
Tapped coil.Such as：The tap of large velocity ratio 600/1, accuracy error is big when less than 600*10%=60A, automatically switches to
During 100/1 tap, precision will get on, and can thus meet the requirement of national standard.
In addition, LED light (being not drawn into figure) is set on the housing of protection end 2, and is supplied by solar panel
The solar energy on daytime, can be changed into electric energy, and the internal storage battery that power storage is carried in LED light by electricity, like this
It can provide illumination when staff is operating load monitoring device at night for staff, both improved peace
Full property saves electric energy again.
Claims (8)
1. a kind of load monitoring device for power distribution network, for gathering the information on load of power distribution network and being uploaded in main control computer,
It is characterized in that, described device includes monitoring side, protection end and gripping module, the gripping module includes the first gripping handle, the
Two gripping handles and fixing buckle, the first gripping handle are connected with monitoring side, and the second gripping handle is connected with protection end, described solid
Fixed deduction of points is not connected with monitoring side and protection end, and respectively by the first through hole on the first gripping handle and the second gripping handle
Second through hole；The monitoring side includes the second housing and the sampling component being encapsulated in second shell body and takes energy Power Supply Assembly, institute
State sampling component and take energy Power Supply Assembly to be connected with each other, and be connected with the conducting wire of power distribution network.
2. the load monitoring device according to claim 1 for power distribution network, it is characterised in that the sampling component includes
Iron core and signal processing circuit plate are sampled, the conducting wire of the sampling iron core and power distribution network connects, the signal processing circuit plate point
It is not connected with sampling iron core and main control computer.
3. the load monitoring device according to claim 2 for power distribution network, it is characterised in that the signal processing circuit
Plate includes sequentially connected sampling processing circuit, microcontroller and miniature antenna, the sampling processing circuit and sampling iron core
Connection, the miniature antenna are connected with main control computer.
4. the load monitoring device according to claim 3 for power distribution network, it is characterised in that the sampling processing circuit
Including sequentially connected wave filter, signal sample circuit and analog-digital converter, the wave filter is connected with sampling iron core, the mould
Number converter is connected with microcontroller.
5. the load monitoring device according to claim 2 for power distribution network, it is characterised in that set on the sampling iron core
There is sensor coil, the sensor coil is connected with signal processing circuit plate.
6. the load monitoring device according to claim 5 for power distribution network, it is characterised in that set on the sensor coil
There are the first connecting pin, second connection end and the 3rd connecting pin, the electric current that first connecting pin is formed with the 3rd connecting pin lead
No-load voltage ratio is 600/1, and first connecting pin is 100/1 with the electric current no-load voltage ratio that second connection end is formed.
7. the load monitoring device according to claim 1 for power distribution network, it is characterised in that described take can Power Supply Assembly
Inductive iron core and power supply circuit including interconnection, the conducting wire connection of the inductive iron core and power distribution network, the power supply circuit
It is connected with sampling component.
8. the load monitoring device according to claim 1 for power distribution network, it is characterised in that the protection end includes the
One housing and the LED illumination lamp being arranged on the first housing, the LED illumination lamp are connected with solar panel, the sun
Energy solar panel is encapsulated in first shell body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721264737.XU CN207318604U (en) | 2017-09-29 | 2017-09-29 | A kind of load monitoring device for power distribution network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721264737.XU CN207318604U (en) | 2017-09-29 | 2017-09-29 | A kind of load monitoring device for power distribution network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207318604U true CN207318604U (en) | 2018-05-04 |
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ID=62428514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721264737.XU Active CN207318604U (en) | 2017-09-29 | 2017-09-29 | A kind of load monitoring device for power distribution network |
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| CN (1) | CN207318604U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107607819A (en) * | 2017-09-29 | 2018-01-19 | 国网上海市电力公司 | A kind of load monitoring device for power distribution network |
-
2017
- 2017-09-29 CN CN201721264737.XU patent/CN207318604U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107607819A (en) * | 2017-09-29 | 2018-01-19 | 国网上海市电力公司 | A kind of load monitoring device for power distribution network |
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