CN206135543U - Low pressure unbalanced three phase monitored control system - Google Patents
Low pressure unbalanced three phase monitored control system Download PDFInfo
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- CN206135543U CN206135543U CN201621073852.4U CN201621073852U CN206135543U CN 206135543 U CN206135543 U CN 206135543U CN 201621073852 U CN201621073852 U CN 201621073852U CN 206135543 U CN206135543 U CN 206135543U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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Abstract
The utility model discloses a low pressure unbalanced three phase monitored control system, include: select looks on -off controller through a three current transformer respectively with three the three -phase four -wire power supply in order to confirm as the load power supply is connected to the sub - switch of double - circuit, the input of electric leakage circuit breaker is connected respectively three -phase four -wire power supply, the A of output, B, C three -phase respectively through the 2nd current transformer and ac contactor and be decomposed into single -phase, and with the output is regarded as jointly to the zero line of electric leakage circuit breaker, monitor terminal is used for receiving the electric leakage circuit breaker sends each branch road looks line current of three -phase four -wire power supply to the platform for monitored control system is sent to each the branch road looks line current that will gather, the monitored control system platform sends corresponding control command to monitor terminal to rate to branch road unbalanced load and monitor and adjust. This system has solved that three -phase unbalanced load power off time is long, the maintenance process is complicated, security subalternation problem.
Description
Technical field
The utility model is related to distribution network technology field, more particularly to low voltage three-phase imbalance monitoring system.
Background technology
In China's urban and rural power grids, three-phase four-wire system distribution system is adopted in a large number.Due to there is many single-phase loads, electricity consumption
The reasons such as asynchronism, therefore the three-phase imbalance operation of distribution transformer is inevitable.The imbalance of distribution transformer
Operation, increases current in middle wire, increases copper loss, the iron loss of transformer, reduces the operational efficiency of transformer, affects the peace of transformer
Row for the national games, causes imbalance of three-phase voltage, reduces the quality of power supply.
At present power distribution network low-voltage problem of comprehensive treatment is an important process of various places power department.However, in reality
There are problems that in control it is a lot, for example, three-phase load adjustment need broken string, commutation, time-consuming, efficiency is very low, three-phase
The adjustment of load was both delayed, and very inaccurate, and whole process needs to take considerable time that not only the safety of operating personnel cannot
Ensure, and power-off is needed during adjusting, it is impossible to meet the demand of normal electricity consumption, even if normal adjustment terminates, peak of power consumption
Phase has perhaps also pass by so that adjustment becomes meaningless；Need data volume to be processed big, be not easy to management.
Utility model content
The utility model is intended at least to solve to a certain extent one of technical problem in correlation technique.For this purpose, this reality
It is to propose a kind of low voltage three-phase imbalance monitoring system with new purpose, it is uneven that the system can solve three-phase load
The problems such as weighing apparatus power off time length, maintenance process are complicated, security is poor, and it is easy to access and the process of mass data, at saving
Reason time and cost of labor.
To reach above-mentioned purpose, embodiment of the present utility model proposes a kind of low voltage three-phase imbalance monitoring system, bag
Include：Phase selection on-off controller, RCCB, monitor terminal and monitoring system platform；The phase selection on-off controller passes through three
Individual first current transformer is connected to be defined as the three-phase four-wire power that load is powered respectively with three two-way switches, with
So that the two-way switch is connected with phase power supply；The input of the RCCB connects respectively the three-phase and four-line electricity
Source, A, B, C three-phase of the output end of the RCCB is respectively through the second current transformer and A.C. contactor and decomposes
For single-phase, and with the zero line of the RCCB collectively as output end；The monitor terminal is used to receive the electric leakage
Each branch road phase line current of the three-phase four-wire power that breaker is sent by 485 communication modes, and each branch road that will be gathered
Phase line current is sent to monitoring system platform；The monitoring system platform is used to process the data for receiving, and sends out to monitor terminal
Corresponding control instruction is sent, so that the load unbalanced rate of branch road is monitored and be adjusted.
According to the utility model proposes low voltage three-phase imbalance monitoring system, connect power end RCCB pass through
Each branch road phase line current of the three-phase four-wire power is sent to monitor terminal, and the monitor terminal by 485 communication modes
In time the information for collecting is sent to into monitoring system platform, so that the monitoring system platform quickly processes the number for receiving
According to, and then corresponding control instruction is sent to monitor terminal, to realize the monitoring and adjustment of the load unbalanced rate of branch road, solve three
The problems such as phase load imbalance power off time length, maintenance process complexity, security difference, and the system is easy to looking into for mass data
Read and process, save process time and cost of labor.
Specifically, the RCCB is arranged in low voltage electric network electricity box, the input difference of the RCCB
Connection A phase inlet wires, B phase inlet wires, C phases inlet wire and neutral conductor N, each phase voltage outlet of RCCB connects respectively respective negative
Lotus, the other end of the load connects the neutral conductor outlet of RCCB.
According to one embodiment of the present utility model, the RCCB also include for control load whether it is electric
Combination switch；The combination switch is connected in series between each phase voltage outlet of the RCCB and load.
According to one embodiment of the present utility model, the control end of the combination switch is connected to control combination switch and opens
Open or off state automaton；The input of the automaton connects respectively each of the RCCB
Phase voltage outlet.
According to one embodiment of the present utility model, wherein the zero line is parallel with respectively electricity between A, B, C three-phase
Pressure table, indicator lamp is in series with, current transformer is in parallel with ammeter, and A.C. contactor is in parallel with operation button, RCCB,
A.C. contactor summation current transformer may be contained within box house, and ammeter, voltmeter, indicator lamp and operation button may be contained within
Tank surface.
According to one embodiment of the present utility model, two-way switch include a contact-making switch, one aid in after
It is in parallel with the contact-making switch after electrical equipment and a diode, the diode and auxiliary relay series connection.
According to one embodiment of the present utility model, the monitor terminal also includes automatic phase-change switch, described to move certainly
Mutually switch is in the unit electricity box on phase line circuit, to the electric current for monitoring the terminal voltage of phase line, electricity box unit, and
The monitor terminal is sent to by wireless power carrier communication mode, and according to the monitoring system platform control of monitor terminal forwarding
System instruction carries out the automatic conversion of unit electricity box power phase.
Description of the drawings
Fig. 1 is the schematic diagram of the low voltage three-phase imbalance monitoring system according to one embodiment of the invention.
Specific embodiment
Embodiment of the present utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein ad initio
Same or similar element is represented to same or similar label eventually or the element with same or like function.Below by ginseng
The embodiment for examining Description of Drawings is exemplary, it is intended to for explaining the utility model, and it is not intended that to the utility model
Restriction.
As shown in Figure 1, a kind of low voltage three-phase imbalance monitoring system, including：11, three structures of phase selection on-off controller
Identical two-way switch 16, RCCB 13, monitor terminal 14 and monitoring system platform 15.
Specifically, the phase selection on-off controller is opened respectively by three the first current transformers with three two-way
Connection is connect to be defined as the three-phase four-wire power 12 that load is powered, so that two-way switch is connected with phase power supply.
Wherein, any one of the two-way switch can include contact-making switch, an auxiliary relay and
It is in parallel with the contact-making switch after individual diode, the diode and auxiliary relay series connection.
The input of the RCCB connects respectively the three-phase four-wire power, the output end of the RCCB
A, B, C three-phase respectively through the second current transformer and A.C. contactor and be decomposed into it is single-phase, and with the leakage, breaking
The zero line of device is collectively as output end.Wherein, the zero line is parallel with respectively voltmeter between A, B, C three-phase, is in series with
Indicator lamp, current transformer is in parallel with ammeter, and A.C. contactor is in parallel with operation button, RCCB, A.C. contactor
Summation current transformer may be contained within box house, and ammeter, voltmeter, indicator lamp and operation button may be contained within tank surface.
Specifically, the RCCB is arranged in low voltage electric network electricity box, the input difference of the RCCB
Connection A phase inlet wires, B phase inlet wires, C phases inlet wire and neutral conductor N, each phase voltage outlet of RCCB connects respectively respective negative
Lotus, the other end of the load connects the neutral conductor outlet of RCCB.
The RCCB can also include for control load whether electric combination switch.Preferably, it is described multiple
Combination switch series connection can be connected between each phase voltage outlet of the RCCB and load, the control of the combination switch
End can be connected to control the automaton that combination switch is switched on or off state, the input of the automaton
Connect each phase voltage outlet of the RCCB respectively.
The monitor terminal is used to receive the three-phase and four-line electricity that the RCCB is sent by 485 communication modes
Each branch road phase line current in source, and each branch road phase line current of collection is sent to into monitoring system platform；It is corresponding with this, it is described
Monitoring system platform is used to process the data for receiving, and sends corresponding control instruction to monitor terminal, with uneven to branch road load
Weighing apparatus rate is monitored and adjusts.
According to one embodiment of the present utility model, the monitor terminal also includes automatic phase-change switch, described to move certainly
Mutually switch is in the unit electricity box on phase line circuit, to the electric current for monitoring the terminal voltage of phase line, electricity box unit, and
The monitor terminal is sent to by wireless power carrier communication mode, and according to the monitoring system platform control of monitor terminal forwarding
System instruction carries out the automatic conversion of unit electricity box power phase.
According to the utility model proposes low voltage three-phase imbalance monitoring system, connect power end RCCB pass through
Each branch road phase line current of the three-phase four-wire power is sent to monitor terminal, and the monitor terminal by 485 communication modes
In time the information for collecting is sent to into monitoring system platform, so that the monitoring system platform quickly processes the number for receiving
According to, and then corresponding control instruction is sent to monitor terminal, to realize the monitoring and adjustment of the load unbalanced rate of branch road, solve three
The problems such as phase load imbalance power off time length, maintenance process complexity, security difference, and the system is easy to looking into for mass data
Read and process, save process time and cost of labor.
In description of the present utility model, it is to be understood that term " " center ", " longitudinal direction ", " horizontal ", " length ", " width
Degree ", " thickness ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward ", " suitable
The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " is based on orientation shown in the drawings
Or position relationship, be for only for ease of description the utility model and simplify description, rather than indicate or imply indication device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limit of the present utility model
System.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In description of the present utility model, " multiple " are meant that at least two, such as two
It is individual, three etc., unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, it is for example, it may be fixedly connected, or be detachably connected or integral；Can be
It is mechanically connected, or electrically connects；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal or the interaction relationship of two elements, unless otherwise clearly restriction.For the common skill of this area
For art personnel, concrete meaning of the above-mentioned term in the utility model can be as the case may be understood.
In the utility model, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score
Can be the first and second feature directly contacts, or the first and second features are by intermediary mediate contact.And, first is special
Levy second feature " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with
Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means to combine specific features, structure, material or spy that the embodiment or example are described
Point is contained at least one embodiment of the present utility model or example.In this manual, to the schematic table of above-mentioned term
State and be necessarily directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be with
Combine in an appropriate manner in any one or more embodiments or example.Additionally, in the case of not conflicting, this area
Technical staff the feature of the different embodiments or example described in this specification and different embodiment or example can be entered
Row is combined and combined.
Although embodiment of the present utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to it is interpreted as to restriction of the present utility model, one of ordinary skill in the art is in scope of the present utility model
It is interior above-described embodiment to be changed, be changed, being replaced and modification.
Claims (7)
1. a kind of low voltage three-phase imbalance monitoring system, it is characterised in that include：Phase selection on-off controller, RCCB, prison
Control terminal and monitoring system platform；
The phase selection on-off controller is connected to be defined as respectively by three the first current transformers with three two-way switches
The three-phase four-wire power that load is powered, so that two-way switch is connected with phase power supply；
The input of the RCCB connects respectively the three-phase four-wire power, the A of the output end of the RCCB,
B, C three-phase respectively through the second current transformer and A.C. contactor and be decomposed into it is single-phase, and with the RCCB
Zero line is collectively as output end；
The monitor terminal is used to receive the three-phase four-wire power that the RCCB is sent by 485 communication modes
Each branch road phase line current, and each branch road phase line current of collection is sent to into monitoring system platform；
The monitoring system platform is used to process the data for receiving, and sends corresponding control instruction to monitor terminal, with to branch road
Load unbalanced rate is monitored and adjusts.
2. low voltage three-phase as claimed in claim 1 imbalance monitoring system, it is characterised in that the RCCB is arranged on
In low voltage electric network electricity box, the input of the RCCB connects respectively A phase inlet wires, B phase inlet wires, C phases inlet wire and neutrality
Line N, each phase voltage outlet of RCCB connects respectively corresponding load, the other end connection RCCB of the load
Neutral conductor outlet.
3. low voltage three-phase as claimed in claim 2 imbalance monitoring system, it is characterised in that the RCCB also includes
For control load whether electric combination switch；
The combination switch is connected in series between each phase voltage outlet of the RCCB and load.
4. low voltage three-phase as claimed in claim 3 imbalance monitoring system, it is characterised in that the control end of the combination switch
It is connected to control the automaton that combination switch is switched on or off state；
The input of the automaton connects respectively each phase voltage outlet of the RCCB.
5. low voltage three-phase as claimed in claim 1 imbalance monitoring system, it is characterised in that wherein described zero line respectively with A,
Voltmeter is parallel between B, C three-phase, indicator lamp is in series with, current transformer is in parallel with ammeter, A.C. contactor with behaviour
Make button in parallel, RCCB, A.C. contactor summation current transformer may be contained within box house, ammeter, voltmeter, refer to
Show that lamp and operation button may be contained within tank surface.
6. low voltage three-phase as claimed in claim 1 imbalance monitoring system, it is characterised in that the two-way switch includes
Individual contact-making switch, an auxiliary relay and a diode, the diode and the auxiliary relay series connection after with it is described
Contact-making switch is in parallel.
7. the uneven monitoring system of low voltage three-phase as described in claim 1-6 is arbitrary, it is characterised in that
The monitor terminal also includes automatic phase-change switch, and the automatic phase-change switch is arranged on the unit electricity box on phase line circuit
In, to monitor the electric current of the terminal voltage of phase line, electricity box unit, and institute is sent to by wireless power carrier communication mode
Monitor terminal is stated, and the automatic of unit electricity box power phase is carried out according to the monitoring system platform control instruction of monitor terminal forwarding
Conversion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621073852.4U CN206135543U (en) | 2016-09-22 | 2016-09-22 | Low pressure unbalanced three phase monitored control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621073852.4U CN206135543U (en) | 2016-09-22 | 2016-09-22 | Low pressure unbalanced three phase monitored control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206135543U true CN206135543U (en) | 2017-04-26 |
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ID=58570358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621073852.4U Active CN206135543U (en) | 2016-09-22 | 2016-09-22 | Low pressure unbalanced three phase monitored control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206135543U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011338A (en) * | 2019-05-07 | 2019-07-12 | 伊犁职业技术学院 | Tri-phase unbalance factor monitoring device, transformer and low-voltage network system |
-
2016
- 2016-09-22 CN CN201621073852.4U patent/CN206135543U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011338A (en) * | 2019-05-07 | 2019-07-12 | 伊犁职业技术学院 | Tri-phase unbalance factor monitoring device, transformer and low-voltage network system |
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Address after: 102206 603a, building 6, 97 Changping Road, Shahe Town, Changping District, Beijing Patentee after: Beijing Sanqing Internet Technology Co.,Ltd. Address before: 102206 603a, building 6, 97 Changping Road, Shahe Town, Changping District, Beijing Patentee before: BEIJING SAN QING HU LIAN TECHNOLOGY LTD. |