CN215120143U - Electric energy multilevel treatment system at tail end of 400-volt distribution network line - Google Patents

Abstract

The utility model discloses a 400 volt join in marriage terminal multistage treatment system of electric energy of net twine way, including the carrier, above-mentioned carrier cavity, be equipped with substation equipment and treatment equipment in the above-mentioned carrier, above-mentioned substation equipment advances to press to survey and inserts the electric wire netting, above-mentioned substation equipment defeated presses side access distribution network circuit, above-mentioned treatment equipment inserts substation equipment defeated side of pressing, the three-phase balance of pressing the side is defeated in the adjustment of above-mentioned treatment equipment, above-mentioned carrier upper end covers the arc, the above-mentioned arc that covers is equipped with a plurality of guide pulleys, by above-mentioned guide pulley guide cable junction substation equipment, above-mentioned guide pulley includes ceramic wheel and ceramic post, above-mentioned ceramic post is fixed on the carrier, above-mentioned ceramic wheel is installed on ceramic post, by above-mentioned ceramic post contact cable, with the unbalanced problem of present low pressure distribution station district load of expectation optimization.

Description

Electric energy multilevel treatment system at tail end of 400-volt distribution network line

Technical Field

The utility model relates to a grid system, concretely relates to 400 volt join in marriage terminal multistage governing system of electric energy of net twine way.

Background

With the development of economic society, various aspects of life have the requirements of energy conservation and emission reduction. The electric energy belongs to secondary energy, and the consumption of a large amount of electric energy directly influences the consumption of electric coal. And the sustainable development of the electric energy is an important basis, and in an actual power distribution network, the utilization rate of the electric energy can indirectly indicate the severity of the electric energy loss. In the operation process of a power grid, particularly in a low-voltage distribution area, the line loss generated by the asymmetry of three-phase loads is relatively high, so that the electric energy loss in the low-voltage distribution area is relatively serious. The load in the low-voltage distribution station area is mostly single-phase load, and the current power grid mainly distributes the single-phase load to A, B, C three phases uniformly. Because the demand for electricity of users changes, the load of a low-voltage distribution area is uncontrollably increased in capacity, the load balance on a three-phase line of the low-voltage distribution area often fluctuates, and the problem of unbalanced load in the low-voltage distribution area is more serious along with the use habits and the deviation of the power consumption of the users.

The existing management system mainly comprises two major types of manual phase modulation and reactive compensation devices aiming at the management method of three-phase load unbalance, wherein the manual phase modulation is usually used for adaptively adjusting the phase of a power grid by a power department according to load operation data of a corresponding circuit, and the management process has huge manpower and material resource costs. The reactive power compensation device adopts the power electronic device to independently manage a plurality of lines, the input cost of the management equipment is higher due to more lines configured by the power grid, and the overall installation of the management device is relatively complex, so that how to reduce the loss of electric energy in the low-voltage distribution station area is worth researching.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a 400 volt join in marriage terminal multistage treatment system of electric energy of net twine way to it distributes the unbalanced problem of interior load of platform district to expect to optimize current low pressure.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model provides a 400 volt join in marriage multistage treatment system of electric energy of net twine way end, including the carrier, above-mentioned carrier cavity is equipped with substation equipment and treatment equipment in the above-mentioned carrier, above-mentioned substation equipment advances to press to survey and inserts the electric wire netting, the defeated voltage side of above-mentioned substation equipment inserts and joins in the net twines circuit, above-mentioned treatment equipment inserts the defeated voltage side of substation equipment, by the three-phase balance of defeated voltage side of above-mentioned treatment equipment adjustment, the arc is covered to above-mentioned carrier upper end, be equipped with a plurality of guide pulleys in the arc of covering, by above-mentioned guide pulley guide cable connection substation equipment, above-mentioned guide pulley includes ceramic wheel and ceramic post, above-mentioned ceramic post is fixed on the carrier, above-mentioned ceramic wheel is installed on ceramic post, by above-mentioned ceramic post contact cable.

Preferably, the carrier further comprises a detection device, the detection device is connected to the voltage input side and the voltage output side of the transformer device, and the detection device detects the voltage data.

Preferably, the inner wall of the carrier is provided with an insulating layer, the side wall of the carrier is provided with a heat dissipation opening, a protective screen is arranged in the heat dissipation opening, the protective screen is provided with an inclined opening, and the outer wall of the carrier is provided with a heat dissipation fan corresponding to the heat dissipation opening.

The further technical scheme is that an insulating plate is arranged on the heat dissipation fan, and an airflow hole corresponding to the inclined opening is formed in the insulating plate.

Preferably, the distribution network circuit includes a distribution device, branch boxes and a user side, the voltage transmission side of the substation device is connected to the distribution device, the distribution device is communicated with the branch boxes, a power supply path is formed between each branch box and the user side, and output ends of the branch boxes are respectively connected to the user side.

The further technical scheme is that a compensation device is arranged between the user side and the branch box, and the compensation device stabilizes the three-phase balance of the output end of the branch box.

The distribution network circuit comprises a double-coil circuit switcher, and two ends of the double-coil circuit switcher are respectively communicated with different power supply paths.

Compared with the prior art, the beneficial effects of the utility model are one of following at least:

the utility model discloses a carrier is as bearing the weight of the unit, easily installation, and the user can be according to administering the demand, and the transformer equipment is connected in the cable entering carrier of being convenient for through the guide pulley to the relevant networking of faster butt joint, utilizes ceramic wheel and ceramic post effectively to avoid the cable contact carrier simultaneously to improve device's security, through at carrier internally mounted treatment equipment, administer the three-phase circuit after the transformer equipment conversion through treatment equipment, thereby ensure the load relative balance of transformer equipment output.

The utility model discloses a check out test set detects input and output substation's voltage, electric current, ensures that the electric power of input and output reaches relevant safe range, avoids because electric power is undulant, leads to equipment to appear the risk.

The utility model discloses lead to the isolation layer and guarantee to be in relative insulation between the carrier inside and the outside, dispel the heat through setting up the hot mouth of fan, avoid outside object to get into the carrier inside through the protection network, through the inclined opening air current output of being convenient for, avoid external rainwater to get into simultaneously, through cooling fan drive gas flow to can guarantee the inside radiating efficiency of carrier when necessary.

The utility model discloses can take place when undulant at the three-phase line through reactive compensation, can optimize the circuit, when local load is too big, local load is avoided too big to accessible double coil circuit switch dispersion load, and the occurence of failure process of danger by force simultaneously provides the convenience for buildding interim rescue route.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic system distribution diagram.

Fig. 3 is a current sampling circuit diagram of the detection device.

Fig. 4 is a voltage sampling circuit diagram of the detection device.

Fig. 5 is a schematic diagram of the compensation principle.

Description of reference numerals:

1-carrier, 2-transformer equipment, 3-treatment equipment, 4-arc covering, 5-guide pulley, 6-detection equipment, 7-heat outlet, 8-heat dissipation fan, 9-insulating sleeve, 101-insulating layer, 501-ceramic wheel, 502-ceramic column, 701-protective net, 702-inclined opening, 901-insulating plate and A-cable.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 5, an embodiment of the present invention is a 400 v multi-stage management system for electric energy at the end of a distribution network line, including a carrier 1, the carrier 1 is hollow, wherein the carrier 1 is an existing substation box, a base is arranged at the bottom of the carrier 1, and an insulating rubber pad is laid inside the carrier 1.

Be equipped with substation 2 and treatment equipment 3 in above-mentioned carrier 1, above-mentioned substation 2 advances to press to survey to insert the electric wire netting, and above-mentioned substation 2 defeated pressure side inserts distribution network circuit, and wherein substation 2 includes current power inverter, because substation 2 need carry out the steady voltage with the electric wire netting power supply and utilize inverter technology to make the circuit accord with the user side demand, consequently can also dispose substation in substation 2, and substation can be oil-immersed power transformer or dry-type transformer.

It should be noted that for special power grid requirements, for example, a 1000kV test circuit, the carrier 1 has a large risk of use, and the oil-immersed power transformer needs to be used alone outdoors.

The input circuit is connected to the voltage input measurement of the power transformation equipment 2, the power grid output by the power transformation equipment 2 is 400V, the input circuit is converted into a 400V low-voltage circuit through the power transformation equipment 2, and the user side can be conveniently used daily through the low-voltage circuit.

The treatment equipment 3 is connected to the voltage transmission side of the power transformation equipment 2, the three-phase balance of the voltage transmission side is adjusted by the treatment equipment 3, wherein the treatment equipment 3 is mainly installed on the voltage transmission side of the power transformation equipment 2, and the voltage transmission side of the power transformation equipment 2 is treated by the treatment equipment 3 so as to ensure the three-phase relative balance of the voltage transmission side output by the power transformation equipment 2. Wherein, administer equipment 3 can administer SPC for current unbalanced three phase, wherein, SPC when moving, can be through external current transformer real-time detection system current, then send the current information that current transformer gathered to the internal control ware and handle, after the controller analysis, SPC will discover the unbalanced current state of system, calculate the current value that three-phase current reaches the required conversion of balanced state simultaneously, after the calculation, the controller will drive the IGBT action through IGBT drive circuit to make the electric current flow into the phase that needs to supply from the phase that needs to spill over. Thereby enabling the three-phase current to be completely redistributed and keeping the total three-phase current unchanged.

It should be noted that SPC only acts as a re-shunt during the balancing process, and only consumes a small portion of the energy, which is mainly the fan operation of abatement device 3, the energy consumption of the control device, and the energy consumption of the switching device.

Above-mentioned 1 upper end of carrier covers arc 4, wherein cover arc 4 for evading the rainwater risk, the aforesaid is equipped with a plurality of guide pulley 5 in covering arc 4, connect substation equipment 2 by above-mentioned guide pulley 5 guide cable A, it enters into carrier 1 and inserts substation equipment 2 to pull cable A through guide pulley 5, use guide pulley 5 and can avoid cable A contact carrier 1, thereby effectively reduce the damage risk of cable A crust, wherein cable A's distribution network itself has certain insulating property in the use, the event is except that the tie point, all the other parts have insulating material parcel usually, guarantee the security of cable A on guide pulley 5.

Since the cable a is involved in contacting the guide pulley 5, in order to further avoid the risk of accidents, the guide pulley 5 comprises the ceramic wheel 501 and the ceramic column 502, and the creepage risk of the cable a is effectively reduced by using the ceramic wheel 501 and the ceramic column 502 as insulators. The ceramic post 502 is fixed to the carrier 1, and the ceramic wheel 501 is attached to the ceramic post 502 so as to contact the cable a via the ceramic post 502.

Based on above-mentioned embodiment, it is shown with reference to fig. 1 to 4, another embodiment of the utility model is that still be equipped with check out test set 6 in above-mentioned carrier 1, wherein check out test set 6 is current commodity, check out test set when necessary, can contain the temperature detecting element to whether unusual temperature change appears in the detection, and then reduce relevant electric wire netting accident risk. The detection device 6 is connected to the voltage input side and the voltage output side of the transformer device 2, and the detection device 6 detects voltage data. Wherein, cable A needs inscription check out test set 6, so carrier 1 is inside can set up insulating cover 9, overlaps through insulating cover 9 and establishes on the cable A that substation equipment 2 entered the voltage and surveys, by insulating cover 9 at the inside 10 kilovolts of cable A of parcel of carrier 1 to form multilayer protection, help reducing the electric leakage risk.

It should be noted that the detection device 6 may be in signal connection with a control terminal, the control terminal may be a central controller of the abatement device 3, the detection device 6 periodically detects whether the three-phase current at the voltage output side of the transformer is balanced and detects whether the input voltage of the voltage input detection is normal, when the three-phase current at the voltage output side is detected to be unbalanced, the signal may be output to a terminal control unit in a wireless manner, and the terminal control unit reads the load and phase sequence information provided by the current detection devices of the power grid branches, so that the current phase sequence information performs intelligent calculation, optimizes the optimal phase of each load connected to the power grid, and drives the abatement device 3 to compensate.

Based on above-mentioned embodiment, refer to fig. 1 and show, another embodiment of the utility model is that, above-mentioned carrier 1 inner wall is equipped with insulating layer 101, and wherein insulating layer 101 is the insulating pad of centre gripping between carrier 1 inner wall and outer wall, through insulating layer 101, ensures that carrier 1 is inside and outside relatively insulating, and wherein carrier 1 generally is for placing on high altitude platform district, effectively in order to reduce the electric shock risk that the unexpected touch carrier 1 of staff leads to, if need open carrier 1, then need the staff to dress insulating apparatus and carry out the operation.

Above-mentioned carrier 1 lateral wall is equipped with heat of fan mouthful 7, can improve the condition of giving off in the carrier 1 through thermovent 7, because substation equipment 2 is in long-term in-process, if not dispel the heat in time, it probably collects the heat, thereby influence the three-phase line balance, be equipped with protection network 701 among the above-mentioned heat of fan mouthful 7, wherein the filter screen that protection network 701 was made for current insulating material, avoid external object from heat of fan mouthful 7 entering carrier 1 through protection network 701, effectively guarantee the inside operation of carrier 1 and normally.

The protection net 701 is provided with an inclined opening 702, the inclined opening 702 is used as an airflow channel, the inclined opening 702 is gradually inclined downwards from inside to outside so as to prevent rainwater from flowing into the protection net, and the outer wall of the carrier 1 is provided with a heat radiation fan 8 corresponding to the heat radiation port 7. The air is driven to flow by the heat radiation fan 8, so that the heat radiation efficiency in the carrier 1 is improved if necessary.

Further, an insulating plate 901 is disposed on the heat dissipation fan 8, wherein the insulating plate 901 is made of heat-resistant plastic, and is distributed between the heat dissipation fan 8 and the carrier 1 through the insulating plate 901, so that the electronic component of the heat dissipation fan 8 does not contact the carrier 1, and the insulating plate 901 is disposed with an airflow hole corresponding to the inclined opening 702. The inclined openings 702 are communicated through the air flow holes of the insulating plate 901 to ensure that the heat dissipation fan 8 can draw out the air in the carrier 1. Wherein the carrier can be injected with fresh air through the shrouding arc 4. It is to be noted that the shielding mesh 701 may be provided to cover the arc 4 as necessary.

Based on above-mentioned embodiment, it is shown with reference to fig. 2 to refer to, another embodiment of the utility model is that, above-mentioned distribution network circuit includes distribution equipment, feeder pillar and user side, and 2 defeated pressure sides of above-mentioned substation equipment insert distribution equipment, and a plurality of feeder pillars of above-mentioned distribution equipment intercommunication, and form supply path between feeder pillar and the user side, and the user side is inserted respectively to the output of above-mentioned feeder pillar.

Further, referring to fig. 2 and 5, a compensation device is disposed between the user terminal and the branch box, and the compensation device stabilizes the three-phase balance at the output end of the branch box. Wherein compensation arrangement is current static var generator, and compensation arrangement can accomplish to make the three-phase current voltage balance between user's end and the feeder pillar through reactive compensation, effectively improves the line loss risk that appears when the user overclocking uses.

Furthermore, the distribution network circuit comprises a double-coil circuit switcher, and two ends of the double-coil circuit switcher are respectively communicated with different power supply paths. The double-coil circuit switcher is an existing intelligent phase-changing device and can be remotely controlled.

Since the compensation device can adjust the three-phase load unbalance state, however, the setting cost of the compensation device is relatively high, so that a small number of compensation devices cannot realize obvious improvement for the condition that the load distribution is uneven on a local line, in order to carry out balanced distribution on a large number of power grid loads through a small number of compensation devices, a plurality of detection units with lower cost can be installed in a power grid to accurately detect the load current of each circuit, meanwhile, through setting corresponding control terminals, distributing double-coil circuit switchers in different power supply paths, determining the coverage space of a user terminal by using the number and the positions of the double-coil circuit switchers installed in a 400V power grid, and through distributing the double-coil circuit switchers in different power supply paths, when the local line is overloaded, sending a phase change instruction to the double-coil circuit switchers through the corresponding control terminals, and the load phase change is carried out by the double-coil circuit switcher, so that the user load in the distribution network circuit is distributed to three phases of the power grid in a balanced manner.

Reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," "a preferred embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims (7)

1. The utility model provides a 400 volt join in marriage multistage governing system of electric energy of net circuit end, includes carrier (1), carrier (1) cavity, its characterized in that: be equipped with substation equipment (2) and treatment equipment (3) in carrier (1), substation equipment (2) advances to press and surveys and insert the electric wire netting, substation equipment (2) defeated presses the side and inserts and join in the net circuit, treatment equipment (3) are inserted substation equipment (2) and are defeated presses the side, by treatment equipment (3) adjustment is defeated the three-phase balance who presses the side, carrier (1) upper end covers arc (4), it is equipped with a plurality of guide pulley (5) in arc (4) to cover, by guide pulley (5) guide cable connection substation equipment (2), guide pulley (5) are including ceramic wheel (501) and ceramic post (502), ceramic post (502) are fixed on carrier (1), ceramic wheel (501) are installed on ceramic post (502), by ceramic post (502) contact cable.

2. The multi-stage power management system of claim 1, wherein: still be equipped with check out test set (6) in carrier (1), check out test set (6) access transformer equipment's (2) defeated pressure side, by check out test set (6) detection voltage data.

3. The multi-stage power management system of claim 1, wherein: carrier (1) inner wall is equipped with insulating layer (101), carrier (1) lateral wall is equipped with fan hot mouth (7), be equipped with protection network (701) in fan hot mouth (7), be equipped with slope opening (702) on protection network (701), carrier (1) outer wall is equipped with radiator fan (8) that correspond with fan hot mouth (7).

4. The multi-stage power management system of claim 3, wherein: an insulating plate (901) is arranged on the heat dissipation fan (8), and an airflow hole corresponding to the inclined opening (702) is formed in the insulating plate (901).

5. The multi-stage power management system of claim 1, wherein: the distribution network circuit comprises distribution equipment, branch boxes and a user side, wherein the voltage transmission side of the power transformation equipment (2) is connected with the distribution equipment, the distribution equipment is communicated with the branch boxes, a power supply path is formed between each branch box and the user side, and the output ends of the branch boxes are respectively connected with the user side.

6. The multi-stage power management system of claim 5, wherein: and a compensation device is arranged between the user side and the branch box, and the compensation device stabilizes the three-phase balance of the output end of the branch box.

7. The multi-stage power management system of claim 6, wherein: the distribution network circuit comprises a double-coil circuit switcher, and two ends of the double-coil circuit switcher are respectively communicated with different power supply passages.

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