CN110836989A - Low-voltage automatic pre-distribution three-phase line centralized ammeter box - Google Patents
Low-voltage automatic pre-distribution three-phase line centralized ammeter box Download PDFInfo
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- CN110836989A CN110836989A CN201911210046.5A CN201911210046A CN110836989A CN 110836989 A CN110836989 A CN 110836989A CN 201911210046 A CN201911210046 A CN 201911210046A CN 110836989 A CN110836989 A CN 110836989A
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Abstract
The invention relates to the related technical field of distribution equipment, in particular to a low-voltage distribution box, which is particularly suitable for a distribution system for adjusting three-phase load to be uniformly distributed. The low-voltage automatic pre-distributed three-phase line centralized electricity meter box consists of a three-phase power supply input end, a machine group distribution module and a single-phase power supply centralized output end; the low-voltage automatic pre-distribution three-phase line centralized ammeter box is connected in series between a three-phase line at the low-voltage side of the transformer and a user single-phase line, A, B, C three-phase power supplies are redistributed in the box by taking each two phases as a group, so that the input end of each intelligent phase modulation device is connected with the two-phase power supplies, and the output end of each intelligent phase modulation device outputs the single-phase power supply to the user ammeter from the user ammeter to the single-phase power supply centralized output end; under the condition that an original low-voltage distribution system is not changed, a low-voltage automatic pre-distribution three-phase line balance box is additionally arranged, the utilization rate of electric energy can be effectively improved, the electric energy quality is improved, and three-phase load balance is controlled.
Description
Technical Field
The invention relates to the related technical field of distribution equipment, in particular to a low-voltage electric meter box which is particularly suitable for a distribution system for adjusting three-phase load to be uniformly distributed.
Background
At present, the optimal design of the electric meter box is researched from the aspects of drainage, insulation, temperature control, maintenance, structure and the like, and related three-phase modulation devices are designed in the box body. Three-phase load balance is the basis of safe power supply, and three-phase load is unbalanced, so that the power supply efficiency of a line and a distribution transformer is reduced if the three-phase load is not balanced, and serious consequences such as burnout of a certain phase lead, burnout of a switch, even single-phase burnout of the distribution transformer and the like can be caused if the heavy-load phase is overloaded. The method is proposed in national standard 'design specification of power supply and distribution system GB 50052-2009': the power supply and distribution system is designed to reduce voltage deviation and preferably balance three-phase load. If the best solution for balancing the load is the uniform distribution of the three-phase load, because the change of the load is dynamic, a special intelligent phase modulation device is needed to be used for carrying out follow-up adjustment on a power distribution system in real time according to the change of the load, one device is not enough for adjusting the load change quantity of the whole power distribution area, an intelligent phase modulation device needs to be installed before the inlet wire of each user electric meter, and if all users in the power distribution area are provided with the intelligent phase modulation devices, the following steps are required:
firstly, the existing user electric meter box is improved and upgraded, and phase modulation equipment is added;
and secondly, phase modulation equipment is installed by using a new special power distribution cabinet.
Disclosure of Invention
In order to solve the problems, the invention provides the low-voltage automatic pre-distribution three-phase line centralized ammeter box which is specially used in cooperation with an intelligent phase modulation device. A plurality of intelligent phase modulation devices are arranged in the box, the number of the intelligent phase modulation devices is the same as that of the single-phase user electric meters, and each phase modulation device controls and connects one phase of two-phase power supplies to the user electric meters; the phase modulation devices correspond to single-phase user electric meters, each phase modulation device generates phase modulation actions according to respective optimal algorithms, all the intelligent phase modulation devices are integrated together to be regarded as an intelligent phase modulation group, the phase modulation groups organically work, three-phase user circuits connected in a box through electric meters can be adjusted on the most appropriate phase in a three-phase power supply, and each low-voltage automatic pre-distribution three-phase circuit centralized electric meter box can enable three-phase load distribution in a building or a floor to tend to be balanced.
The invention is realized by the following technical scheme:
1. a low-voltage automatic pre-distribution three-phase line centralized electricity meter box comprises a box body, a power supply and a control module, wherein the box body is composed of a three-phase power supply input end, a machine group distribution module and a single-phase power supply centralized output end; a low-voltage automatic pre-distribution three-phase line centralized ammeter box is connected in series between a transformer low-voltage side three-phase line and a user single-phase line, A, B, C three-phase power supply is redistributed in the box by taking each two phases as a group, so that the input end of each intelligent phase modulation device is connected with the two-phase power supply, the output end of the intelligent phase modulation device outputs the single-phase power supply to a user ammeter, and the single-phase power supply is centralized at the output end from the user ammeter;
three-phase power input end: a, B, C three-phase power lines and N lines are connected in parallel in a three-phase four-wire system low-voltage distribution line on the secondary side of the transformer, and A, B, C, N four lines are connected to the cluster distribution module; the main function is to install the incoming line to the low-voltage three-phase four-wire system line through the reserved incoming line port.
A cluster distribution module: the intelligent phase modulation system consists of a plurality of intelligent phase modulation devices and a plurality of user electric meters, wherein the number of the intelligent phase modulation devices is the same as that of the single-phase electric meters, and the cluster distribution module is connected between a three-phase power supply input end and a single-phase power supply centralized output end in series; the intelligent phase modulation device has the main functions that every two phases of a three-phase four-wire system circuit entering from a wire inlet are redistributed as a group, so that two-phase power supplies are connected to the input end of each intelligent phase modulation device, and the output end of each intelligent phase modulation device outputs a single-phase power supply to a user electric meter which is connected to a single-phase power supply centralized output end.
Single-phase power centralized output end: connecting the distributed single-phase line group with the incoming line end of the user single-phase electric meter box; the intelligent phase modulation device has the main function of connecting the single-phase loop of the intelligent phase modulation device after being adjusted to a user side.
Compared with the prior art, the invention has the beneficial effects that:
the invention relates to an electric meter box specially designed for installing intelligent phase modulation devices, wherein a plurality of intelligent phase modulation devices can be regarded as an organic cooperative cluster and installed in a box body, and the electric meter box is an intelligent phase modulation power distribution system related to buildings or partial floors from the system perspective. Under the condition that an original low-voltage distribution system is not changed, the low-voltage automatic pre-distribution three-phase line centralized ammeter box is additionally arranged, and the utilization rate of electric energy can be effectively improved. The electric meter box is not only a shell for loading power supply and distribution equipment, but also has the function of improving the quality of electric energy.
When the new electric meter box covers the user line in a large area, the balance of the whole power grid in the transformer area can be adjusted. In a platform district, each low-voltage automatic pre-distribution three-phase line centralized ammeter box cooperates with each other to form a unit, each individual in the unit works orderly to adjust the three-phase low-voltage line in the platform district in real time according with the load change of the current line, to keep the operation of the current line for the user who has used electric energy and generates power grid fluctuation, to adjust the user line of the user who does not use electric energy or uses electric energy to have less power grid fluctuation to the optimal state, so as to achieve the function of pre-distribution lines, and the optimal state is as follows: under one station change, with the continuous access of user loads, the loads of three-phase lines approach to balance, and the current of a central line approaches to zero.
Drawings
Fig. 1 is a schematic structural diagram of a low-voltage automatic pre-distribution three-phase line centralized electricity meter box.
Fig. 2 is a system structure diagram of a low-voltage automatic pre-distribution three-phase line centralized electricity meter box.
Fig. 3 is an application example of a low-voltage automatic pre-distribution three-phase line centralized electricity meter box 1.
Fig. 4 is an application example of a low-voltage automatic pre-distribution three-phase line centralized electricity meter box 2.
Fig. 5 is an application example of a low-voltage automatic pre-distribution three-phase line centralized electricity meter box and fig. 3.
Fig. 6 is an application example of a low-voltage automatic pre-distribution three-phase line centralized electricity meter box, fig. 4.
Fig. 7 is an application example of a low-voltage automatic pre-distribution three-phase line centralized electricity meter box shown in fig. 5.
Fig. 8 is an application example of a low-voltage automatic pre-distribution three-phase line centralized electricity meter box shown in fig. 6.
Fig. 9 is an application example of a low-voltage automatic pre-distribution three-phase line centralized electric meter box fig. 7.
Detailed description of the preferred embodiments
In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is described in the following with reference to fig. 1 and fig. 2.
As shown in fig. 1, a low-voltage automatic pre-distribution three-phase line centralized electricity meter box is composed of a three-phase power input end, a cluster distribution module and a single-phase power centralized output end; a low-voltage automatic pre-distribution three-phase line centralized electricity meter box is connected in series between a transformer low-voltage side three-phase line and a user single-phase line, A, B, C three-phase power supplies are redistributed in the electricity meter box by taking every two phases as a group, so that the input end of each intelligent phase modulation device is connected with the two-phase power supplies, the output end of each intelligent phase modulation device outputs the single-phase power supplies to the user electricity meter, and the output end is centralized from the user electricity meter to the single-phase power supplies.
In a three-phase four-wire low-voltage distribution line on the secondary side of the transformer, a three-phase power input end is connected into A, B, C three-phase power lines and an N line in a parallel mode, and A, B, C, N four lines are connected to a cluster distribution module. The cluster distribution module is composed of a plurality of intelligent phase modulation devices and a plurality of user electric meters, the number of the devices is the same as that of the user single-phase electric meters, and the cluster distribution module is connected between the three-phase power supply input end and the single-phase power supply centralized output end in series; the intelligent phase modulation device has the main function that every two phases of a three-phase four-wire system circuit entering from a wire inlet are redistributed as a group, so that the input end of each intelligent phase modulation device is connected with a two-phase power supply. The output end of the intelligent phase modulation device outputs a single-phase power supply to a user electric meter, the user electric meter connects the distributed line with the user single-phase line, and the single-phase loop adjusted by the intelligent phase modulation device is connected to a user side. After the line connection finishes, a new intelligent ammeter case forms, each intelligent phase modulation module in the ammeter case makes the phase modulation action according to algorithm separately, the number of phase modulation device is the same with user's ammeter number, all phase modulation devices in the incasement can form a phase modulation crowd, the real-time regulation and control three phase current circuit of phase modulation crowd inserts in the user single phase circuit, thereby accomplish to distribute power once more to the user's circuit that the incasement ammeter corresponds under the control of algorithm model, the ammeter case that loads intelligent phase modulation crowd sees from the angle of system, be an intelligent power distribution system about building or partial floor.
As shown in fig. 2, a system structure of a low-voltage automatic pre-distribution three-phase line centralized electricity meter box comprises a transformer, a low-voltage automatic pre-distribution three-phase line centralized electricity meter box group (No. 1, No. 2, No. 3, No. N, N +1, etc.), and a user line port. The transformer is used as a power supply part, the low-voltage automatic pre-distributed three-phase line centralized ammeter box is used as a conversion part, and a user line port is used as a load part. When the low-voltage automatic pre-distribution three-phase line centralized ammeter box covers a user line in a large area, the balance of the whole power grid of the transformer area is adjusted. In a platform district, each low-voltage automatic pre-distribution three-phase line centralized ammeter box cooperates with each other to form a unit, each individual in the unit works orderly to adjust the three-phase low-voltage line in the platform district in real time according with the load change of the current line, to keep the operation of the current line for the user who has used electric energy and generates power grid fluctuation, to adjust the user line of the user line with small power grid fluctuation to the optimal state without using electric energy or using electric energy, to achieve the function of pre-distribution lines, the optimal state is: under one station change, with the continuous access of user loads, the loads of three-phase lines approach to balance, and the current of a central line approaches to zero.
Fig. 3 shows an application example of a low-voltage automatic pre-distribution three-phase line centralized electricity meter box in fig. 1. A classical implementation case schematic diagram is added on the basis of the schematic diagram of fig. 1. As shown in fig. 3, a three-phase circuit breaker is installed between the three-phase power input terminal and the transformer low-voltage side three-phase line. The function of the composition is as follows; the breaker is disconnected when the ammeter case is installed and maintained, so that the ammeter case is in a power-off state, and the construction safety is ensured.
Fig. 4 shows an application example of a low-voltage automatic pre-distribution three-phase line centralized electricity meter box in fig. 2. A classical implementation case schematic diagram is added on the basis of the schematic diagram of fig. 1. As shown in fig. 4, two single-phase circuit breakers are installed between the three-phase power input terminal and the two-phase voltage input lines of the cluster distribution module. The function of the composition is as follows; the breaker is disconnected when the ammeter case is installed and maintained, so that the ammeter case is in a power-off state, and the construction safety is ensured. When in maintenance, the intelligent device or the user line with problems can be judged by observing the breaking state of the single-phase circuit breaker.
Fig. 5 shows an application example of a low-voltage automatic pre-distribution three-phase line centralized electricity meter box in fig. 3. A classical implementation case schematic diagram is added on the basis of the schematic diagram of fig. 1. As shown in fig. 5, a single-phase circuit breaker is installed between the cluster distribution module and the customer electricity meter. The function of the composition is as follows; the breaker is disconnected when the ammeter is installed and maintained, so that the ammeter is in a power-off state, and construction safety is guaranteed. When in maintenance, the breaking state of the single-phase circuit breaker can be observed to judge which electricity meter or user line has problems.
Fig. 6 shows an application example of a low-voltage automatic pre-distribution three-phase line centralized electricity meter box, fig. 4. A classical implementation case schematic diagram is added on the basis of the schematic diagram of fig. 1. As shown in fig. 6, a single-phase circuit breaker is installed between the cluster distribution module and the customer electricity meter; two single-phase circuit breakers are arranged between the three-phase power input end and two phase voltage input lines of the cluster distribution module. The function of the composition is as follows; the breaker is disconnected when the ammeter case is installed and maintained, so that the ammeter case is in a power-off state, and the construction safety is ensured. When in maintenance, the intelligent phase modulation device, the electric meter or the user line with problems can be judged by observing the breaking state of the single-phase circuit breaker.
Fig. 7 shows an application example of a low-voltage automatic pre-distribution three-phase line centralized electricity meter box in fig. 5. A classical implementation case schematic diagram is added on the basis of the schematic diagram of fig. 1. As shown in fig. 7, a three-phase circuit breaker is installed between the three-phase power input terminal and the transformer low-voltage three-phase line; a single-phase circuit breaker is installed between the cluster distribution module and the user electric meter. The function of the composition is as follows; the breaker is disconnected when the ammeter is installed and maintained, so that the ammeter is in a power-off state, and construction safety is guaranteed. When in maintenance, the breaking state of the single-phase circuit breaker can be observed to judge which electricity meter or user line has problems.
Fig. 8 shows an application case of a low-voltage automatic pre-distribution three-phase line centralized electricity meter box in fig. 6. A classical implementation case schematic diagram is added on the basis of the schematic diagram of fig. 1. As shown in fig. 6, a three-phase circuit breaker is installed between the three-phase power input terminal and the transformer low-voltage three-phase line; two single-phase circuit breakers are arranged between the three-phase power input end and two phase voltage input lines of the cluster distribution module. The function of the composition is as follows; the breaker is disconnected when the ammeter is installed and maintained, so that the ammeter is in a power-off state, and construction safety is guaranteed. When in maintenance, the breaking state of the single-phase circuit breaker can be observed to judge which electricity meter or user line has problems.
Fig. 9 shows an application example of a low-voltage automatic pre-distribution three-phase line centralized electricity meter box in fig. 6. A classical implementation case schematic diagram is added on the basis of the schematic diagram of fig. 1. As shown in fig. 7, a three-phase circuit breaker is installed between the three-phase power input terminal and the transformer low-voltage three-phase line; two single-phase circuit breakers are arranged between the input end of the three-phase power supply and two phase voltage input lines of the cluster distribution module; a single-phase circuit breaker is installed between the cluster distribution module and the user electric meter. The function of the composition is as follows; the breaker is disconnected when the ammeter is installed and maintained, so that the ammeter is in a power-off state, and construction safety is guaranteed. When in maintenance, the breaking state of the single-phase circuit breaker can be observed to judge which electricity meter or user line has problems.
Under the unchangeable condition of original low voltage distribution system, modify traditional ammeter case and install intelligent phase modulation device between three-phase line and the single-phase ammeter of user, the utilization ratio of the effectual improvement electric energy of ability to reduce the unbalanced degree of three-phase load.
The foregoing is an embodiment of the present invention, and it will be apparent to those skilled in the art that other changes, modifications, alterations and substitutions can be made according to the technical solutions and concepts described above, and the embodiments can be changed, modified and replaced without departing from the principle of the present invention.
Claims (1)
1. The low-voltage automatic pre-distribution three-phase line centralized ammeter box is characterized in that: the structure of the box body consists of a three-phase power supply input end, a cluster distribution module and a single-phase power supply centralized output end; the low-voltage automatic pre-distribution three-phase line centralized ammeter box is connected in series between a three-phase line at the low-voltage side of the transformer and a user single-phase line, A, B, C three-phase power supplies are redistributed in the box by taking each two phases as a group, so that the input end of each intelligent phase modulation device is connected with the two-phase power supplies, and the output end of each intelligent phase modulation device outputs the single-phase power supply to the user ammeter from the user ammeter to the single-phase power supply centralized output end;
three-phase power input end: a, B, C three-phase power lines and N lines are connected in parallel in a three-phase four-wire system low-voltage distribution line on the secondary side of the transformer, and A, B, C, N four lines are connected to the cluster distribution module;
a cluster distribution module: the intelligent phase modulation system consists of a plurality of intelligent phase modulation devices and a plurality of user electric meters, the number of the devices is the same as that of the user single-phase electric meters, and the cluster distribution module is connected between a three-phase power supply input end and a single-phase power supply centralized output end in series;
single-phase power centralized output end: connecting the distributed single-phase line group with the incoming line end of the user single-phase electric meter box
The use method of the low-voltage automatic pre-distribution three-phase line centralized ammeter box is characterized by comprising the following steps of: installing intelligent phase modulation devices with the same number as that of single-phase user electric meters in a low-voltage automatic pre-distributed three-phase line centralized electric meter box, wherein each intelligent phase modulation device controls and connects one phase of two-phase power supplies to the user electric meters; the phase modulation devices correspond to a plurality of single-phase user electric meters, each phase modulation device generates phase modulation actions according to respective optimal algorithms, all the phase modulation devices are integrated together to form a phase modulation group, and the phase modulation group organically works to adjust a three-phase user line connected with the electric meters in a box on the most appropriate phase in a three-phase power supply.
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| CN201911210046.5A CN110836989A (en) | 2019-12-01 | 2019-12-01 | Low-voltage automatic pre-distribution three-phase line centralized ammeter box |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202353321U (en) * | 2011-12-03 | 2012-07-25 | 山东电力集团公司淄博供电公司 | Intelligent comprehensive electricity-distributing metering meter box |
| CN104752968A (en) * | 2014-12-01 | 2015-07-01 | 宁波天顺电气有限公司 | Power box with dual power supplies |
| CN205017015U (en) * | 2015-10-17 | 2016-02-03 | 国网福建省电力有限公司 | Novel adjustment of low -voltage power supply network three -phase unbalanced load device |
| CN205565725U (en) * | 2016-05-09 | 2016-09-07 | 国网浙江省电力公司丽水供电公司 | Low pressure commutation device |
| CN109510221A (en) * | 2018-11-29 | 2019-03-22 | 国网安徽省电力有限公司滁州供电公司 | The device and method of three-phase imbalance adjustment based on power information acquisition system |
-
2019
- 2019-12-01 CN CN201911210046.5A patent/CN110836989A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202353321U (en) * | 2011-12-03 | 2012-07-25 | 山东电力集团公司淄博供电公司 | Intelligent comprehensive electricity-distributing metering meter box |
| CN104752968A (en) * | 2014-12-01 | 2015-07-01 | 宁波天顺电气有限公司 | Power box with dual power supplies |
| CN205017015U (en) * | 2015-10-17 | 2016-02-03 | 国网福建省电力有限公司 | Novel adjustment of low -voltage power supply network three -phase unbalanced load device |
| CN205565725U (en) * | 2016-05-09 | 2016-09-07 | 国网浙江省电力公司丽水供电公司 | Low pressure commutation device |
| CN109510221A (en) * | 2018-11-29 | 2019-03-22 | 国网安徽省电力有限公司滁州供电公司 | The device and method of three-phase imbalance adjustment based on power information acquisition system |
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