CN207832877U - A kind of current information acquisition system of 400V circuits - Google Patents

Abstract

The utility model belongs to network load information collecting device, more particularly to a kind of current information acquisition system of 400V circuits, the system includes current information acquisition terminal, gsm module and cloud server, the current information acquisition terminal includes microcontroller, open-close type current transformer, current sampling circuit and temperature sensor, open-close type current transformer is by collected current signal transfer to current sampling circuit, the signal output end of current sampling circuit and temperature sensor is separately connected the signal input part of microcontroller, the signal output end of microcontroller connects gsm module, the current signal received and temperature signal are transferred to cloud server by microcontroller by gsm module.The utility model is simple in structure, novel in design, and the current information of quick obtaining 400v circuits simultaneously calculates acquisition power grid low-voltage three-phase load unbalanced data and Adjusted Option by cloud server, reduces the consumption of human and material resources and time, improves working efficiency.

Description

A kind of current information acquisition system of 400V circuits

Technical field

The utility model belongs to the current information acquisition of network load information collecting device more particularly to a kind of 400V circuits System.

Background technology

In low-voltage power system, three-phase load is unbalanced in many cases.Three-phase load unbalance substantially have with The reason of lower several respects:1, when three-phase load distributes, user's monomer capacity is not fully understood, is only tentatively distributed from number of users, Two not no distributing users from particular capacity, this laod sharing mode load mean allocation seemingly, exist prodigious in fact Deviation leads to actual three-phase load unbalance.2, increasingly being deviateed load center by building houses of countryside is influenced, and is used meeting When the electricity consumption construction of line of family, only with single phase power supply pattern, causes uniline is more next to grow, substantially carried so as to cause single-phase load It rises, makes three-phase load unbalance.3, the taiwan area less in certain user, the high-power electric appliance such as air conditioner, electromagnetism of some users The use of the not timings such as stove, it is easy to break original three-phase load situation in a basic balance, shadow of this kind of user by season, period Sound is more apparent.4, some Add User access when, do not consider the factor of three-phase load unbalance, it is arbitrary to access, cause three-phase negative Lotus is uneven.

The harm of three-phase load unbalance by load, time, seasonal factor because being influenced, and dynamic change is big, and intuitively It cannot find, therefore the harm generated is potential, but often serious, be mainly manifested in following aspect：1）To line loss It influences.In three-phase four-wire system, the three characteristics of the middle term is load unbalanced, and neutral current is caused to increase, and it is online that this just directly contributes electric energy The increase of road loss.When three-phase load unbalance, no matter which kind of sharing of load situation, current unbalance factor is bigger, line loss Increment is bigger.2）Influence to equipment.The heavy load phase current of three-phase load unbalance is excessive, may cause transformer oil and The overheat of winding, causes oil quality deterioration, reduces rapidly the insulation performance of transformer, so that burning winding.Low voltage electric network three-phase It is load unbalanced also to reflect high-pressure side.It is known that high-tension line over current fault accounts for significant proportion, the reason is that electric current mistake Greatly.Low voltage electric network three-phase load unbalance may cause high pressure phase current excessive, so as to cause large area blackout, simultaneously The switchgear Frequent trip of substation will reduce service life of equipment.3）Influence to voltage.In three-phase four-wire system, because of three Phase load is uneven, will generate residual voltage, makes distribution transformer power supply neutral point drift, one phase voltage of formation is low, and another Phase voltage is high.Voltage it is low one it is mutually serious when can make electric appliance can not normal use, and the high phase of voltage may then burn electric appliance；Separately On the one hand, brownout and it is excessively high be to cause most commonly seen one of the factor of appeal of service.

Therefore quick, the acquisition unbalanced data information of power distribution network low-voltage three-phase load, and then design adjustment side in time Case is most important to eliminate influence of the three-phase load unbalance to network system.

Utility model content

The purpose of this utility model is to provide a kind of current information acquisition system of 400V circuits, the utility model structure letter Single, novel in design, the current information of quick obtaining 400V circuits is simultaneously negative by cloud server calculating acquisition power grid low voltage three-phase Lotus unbalanced data and Adjusted Option.

In order to solve the above technical problems, the technical solution adopted in the utility model is as follows：

A kind of current information acquisition system of 400V circuits, the system include current information acquisition terminal, gsm module And cloud server, the current information acquisition terminal include microcontroller, open-close type current transformer, current sampling circuit and temperature Spend sensor, open-close type current transformer by collected current signal transfer to current sampling circuit, current sampling circuit with The signal output end of temperature sensor is separately connected the signal input part of microcontroller, and the signal output end of microcontroller connects GSM moulds The current signal received and temperature signal are transferred to cloud server by block, microcontroller by gsm module.

Preferably, the system also includes can axial stretching telescopic rod, telescopic rod end be equipped with external screw thread；The folding Formula current transformer includes two hinged camber mechanisms, and two hinged camber mechanisms are respectively arranged at two binding clips of clamping clip, Two clamp handle hinged places of clamping clip are equipped with the torsional spring that clamping clip binding clip can be forced to be closed, wherein a clamp handle end is solid with sleeve outer wall Fixed connection, sleeve lining are equipped with the internal thread coordinated with telescopic rod end.

Preferably, the sleeve outer wall is equipped with installs case, the microcontroller, current sampling circuit and temperature below clamping clip Degree sensor is set in installs case, and ventilation opening is offered in installs case.

Preferably, fixed pulley is additionally provided on the sleeve outer wall, axis and the sleeve axis of fixed pulley are vertically arranged, and are clamped Pincers are not connect with the clamp handle of sleeve connection with drawstring one end, and the drawstring other end is freely sagging around fixed pulley.

Preferably, the top end surface of the telescopic rod is exposed to outside sleeve, and top end surface is equipped with for coordinating drawstring Groove.

Preferably, the microcontroller is the STM32-GSM microcontrollers of integrated temperature sensor.

The utility model mode is as follows：

It needs in use, being first threadedly coupled sleeve with the top of telescopic rod, while regular drawstring position makes drawstring Fixed pulley setting is then passed around across the groove of telescopic rod top end surface, then extends telescopic rod so that driven at the top of telescopic rod Open-close type current transformer on sleeve, installs case, clamping clip and clamping clip is moved at circuit, then fixes telescopic rod Instant length simultaneously pulls drawstring so that and drawstring drives the clamp handle of clamping clip to overcome torsional spring elastic force to be moved close to another clamp handle, into And so that two binding clips of clamping clip are opened to drive open-close type current transformer to open, moving telescopic bar makes opening on clamping clip Box-like current transformer is stuck in outside cable, then unclamps drawstring, two binding clips are closed under the effect of torsional spring elastic force, so that opening Box-like current transformer is closed hoop cable.

Open-close type current transformer is by collected current signal transfer to current sampling circuit, current sampling circuit and temperature The signal output end of degree sensor is separately connected the signal input part of microcontroller, and the signal output end of microcontroller connects gsm module, The current signal received and temperature signal are transferred to cloud server by microcontroller by gsm module, and cloud server passes through Program calculates, and can quickly generate power grid low-voltage three-phase load unbalanced data and Adjusted Option.

The microcontroller is the STM32-GSM microcontrollers of integrated temperature sensor, by the ADC of microcontroller itself on circuit board The analog acquisition that function is extended out makes acquisition and the 4 road 0-20 milliamperes of current acquisitions of 4 road 0-10V voltages；Microcontroller Integrated temperature sensor can pass through the environment temperature around the ventilation hole monitoring circuit in installs case；

Communication aspects provide the functions such as RS232 interface, relay, buzzer, button and LED.The onboard works of STM32-GSM Industry grade double frequency module；Call voice, SMS may be implemented in gsm module（Short message supports multimedia message）, data and facsimile message transmission.

Folding current transformer is commercially available matured product.Its working frequency 50-400Hz, shell use ABS material, skeleton Using PBT plastic material, core material is nickel steel or silicon steel, -25 DEG C~+75 DEG C of operating temperature；Dielectric strength 3.0KV/ 1mA/1min；Ambient humidity≤85%；Insulation resistance DC500V/100M Ω min；Specified input 5A-3000A, rated output 0- 10V (AC) or 0-20mA；Measurement range 5%In-130%In, ratio difference≤± 0.1%, construction screw fixed skew≤± 10 Point.

The utility model compared with prior art, has the following advantages that：The utility model is simple in structure, novel in design, behaviour The current information of ascend a height operation and quick obtaining 400v circuits can be exempted and calculate acquisition electricity by cloud server by making personnel Net low-voltage three-phase load unbalanced data and Adjusted Option reduce the consumption of human and material resources and time, improve working efficiency, Improve the personal safety of operating personnel.

Description of the drawings

Fig. 1 is the work block diagram of the current information acquisition system of 400V circuits in specific implementation mode；

Fig. 2 is the clamping clip structural schematic diagram of acquisition system in specific implementation mode；

Fig. 3 is the attachment structure schematic diagram of clamping clip and telescopic rod in specific implementation mode.

Specific implementation mode

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.

As shown in Figs. 1-3, a kind of current information acquisition system of 400V circuits, the system include current information acquisition Terminal, gsm module and cloud server, the current information acquisition terminal include microcontroller, open-close type current transformer 1, electricity Flow sample circuit and temperature sensor, open-close type current transformer by collected current signal transfer to current sampling circuit, The signal output end of current sampling circuit and temperature sensor is separately connected the signal input part of microcontroller, and the signal of microcontroller is defeated Outlet connects gsm module, and the current signal received and temperature signal are transferred to cloud service by microcontroller by gsm module Device.

The system also includes can axial stretching telescopic rod 5,5 end of telescopic rod be equipped with external screw thread；The open-close type electricity Current transformer 1 includes two hinged camber mechanisms, and two hinged camber mechanisms are respectively arranged at two binding clips 21 of clamping clip, is pressed from both sides Two clamp handles, 22 hinged place of clencher is equipped with the torsional spring 3 that clamping clip binding clip 21 can be forced to be closed, wherein outside a clamp handle end and sleeve 6 Wall is fixedly connected, and 6 inner wall of sleeve is equipped with the internal thread coordinated with 5 end of telescopic rod, and 6 outer wall of sleeve is equipped with peace below clamping clip Vanning 4, the microcontroller, current sampling circuit and temperature sensor are set in installs case 4, and ventilation is offered in installs case 4 Mouthful, be additionally provided with fixed pulley 61 on 6 outer wall of sleeve, axis and 6 axis of sleeve of fixed pulley 61 are vertically arranged, clamping clip not with sleeve The clamp handle of 6 connections is connect with 7 one end of drawstring, and 7 other end of drawstring is around free sagging, the top end surface of telescopic rod 5 of fixed pulley 61 It is exposed to outside sleeve 6, and top end surface is equipped with the groove 51 for coordinating drawstring.

The utility model mode is as follows：

It needs in use, being first threadedly coupled sleeve with the top of telescopic rod, while regular drawstring position makes drawstring Fixed pulley setting is then passed around across the groove of telescopic rod top end surface, then extends telescopic rod so that driven at the top of telescopic rod Open-close type current transformer on sleeve, installs case, clamping clip and clamping clip is moved at circuit, then fixes telescopic rod Instant length simultaneously pulls drawstring so that and drawstring drives the clamp handle of clamping clip to overcome torsional spring elastic force to be moved close to another clamp handle, into And so that two binding clips of clamping clip are opened to drive open-close type current transformer to open, moving telescopic bar makes opening on clamping clip Box-like current transformer is stuck in outside cable, then unclamps drawstring, two binding clips are closed under the effect of torsional spring elastic force, so that opening Box-like current transformer is closed hoop cable.

Open-close type current transformer is by current signal transfer to current sampling circuit, current sampling circuit and temperature sensor Signal output end be separately connected the signal input part of microcontroller, the signal output end of microcontroller connects gsm module.

Current signal in current sampling circuit acquisition circuit, the temperature letter of temperature sensor collecting work contextual vicinity Number, collected current signal and temperature signal are transferred to microcontroller, monolithic by current sampling circuit and temperature sensor respectively The current signal received and temperature signal are transferred to cloud server by machine by gsm module, and cloud server passes through program It calculates, power grid low-voltage three-phase load unbalanced data and Adjusted Option can be quickly generated.Wherein, cloud server passes through program It calculates, quickly generates the improvement that power grid low-voltage three-phase load unbalanced data and Adjusted Option are not related to the technical program, be pair One processing of the collected signal of the technical program.

The microcontroller is the STM32-GSM microcontrollers of integrated temperature sensor, by the ADC of microcontroller itself on circuit board The analog acquisition that function extends out makes acquisition and the 4 road 0-20 milliamperes of current acquisitions of 4 road 0-10V voltages；Microcontroller Integrated temperature sensor can pass through the environment temperature around the ventilation hole monitoring circuit in installs case.

Communication aspects provide RS232；The also functions such as relay, buzzer, button and LED, to the work(for this system It can extend and provide possibility.Call voice, SMS may be implemented in the onboard technical grade double frequency modules of STM32-GSM（Short message is supported color Letter）, data and facsimile message transmission.

The working frequency 50-400Hz of current transformer is opened and closed, shell uses ABS material, skeleton to use PBT plastic material Matter, core material are nickel steel or silicon steel, -25 DEG C~+75 DEG C of operating temperature；Dielectric strength 3.0KV/1mA/1min；Environment Humidity≤85%；Insulation resistance DC500V/100M Ω min；Specified input 5A-3000A, rated output 0-10V (AC) or 0- 20mA；Measurement range 5%In-130%In, ratio difference≤± 0.1%, construction screw fixed skew≤± 10 point.

Claims (3)

1. a kind of current information acquisition system of 400V circuits, which is characterized in that the system includes that current information acquisition is whole End, gsm module and cloud server, the current information acquisition terminal include that microcontroller, open-close type current transformer, electric current are adopted Sample circuit and temperature sensor, open-close type current transformer is by current signal transfer to current sampling circuit, current sampling circuit The signal input part of microcontroller is separately connected with the signal output end of temperature sensor, the signal output end of microcontroller connects GSM The current signal received and temperature signal are transferred to cloud server by module, microcontroller by gsm module, and the system is also Including can axial stretching telescopic rod, telescopic rod end be equipped with external screw thread；The open-close type current transformer is set to clamping clip Binding clip at, two clamp handle hinged places of clamping clip are equipped with the torsional spring that clamping clip binding clip can be forced to be closed, wherein a clamp handle end with Sleeve outer wall is fixedly connected, and sleeve lining is equipped with the internal thread coordinated with telescopic rod end, and the sleeve outer wall is under clamping clip Side is equipped with installs case, and the microcontroller, current sampling circuit and temperature sensor are set in installs case, are offered in installs case Ventilation opening is additionally provided with fixed pulley on the sleeve outer wall, and axis and the sleeve axis of fixed pulley are vertically arranged, clamping clip not with set The clamp handle of cylinder connection is connect with drawstring one end, and the drawstring other end is freely sagging around fixed pulley.

2. the current information acquisition system of 400V circuits as described in claim 1, which is characterized in that the top of the telescopic rod End face is exposed to outside sleeve, and top end surface is equipped with the groove for coordinating drawstring.

3. the current information acquisition system of 400V circuits as described in claim 1, which is characterized in that the microcontroller is collection At the microcontroller of the model STM32-GSM of temperature sensor.