CN111371095A - Intelligent switching system and method for platform load transfer - Google Patents

Abstract

The invention provides an intelligent switching system for transformer area load transfer, which comprises a plurality of transformer areas, wherein each transformer area at least comprises a transformer and is used for connecting one or more loads; an intelligent transfer switch that is switchably connected to a transformer of a first zone and a transformer of a second zone of the plurality of zones; wherein the intelligent change-over switch is connected with a switchable load; the first station area and the second station area respectively comprise a station area load detection device for detecting the load condition of the station area; the intelligent change-over switch can dynamically change over the switchable load connected with the intelligent change-over switch from one of the first transformer area and the second transformer area to the other transformer area according to the load condition. The invention can exert the utilization rate of the stock transformer to the maximum extent, improve the utilization rate of equipment, improve the safe operation capacity of the equipment, and simultaneously reduce the loss of the transformer by the balanced distribution of the transformer load density in the transformer area.

Description

Intelligent switching system and method for platform load transfer

Technical Field

The disclosure relates to the field of power control, in particular to an intelligent switching system and method for platform load transfer.

Background

With the rapid development of national economy, the electricity consumption of residents is greatly increased, and the scale of a power grid is enlarged. For an electric power system, a power supply system is an important ring of the system, a medium-low voltage distribution network is used as a tip of the electric power system, and the quality of the operation quality of the medium-low voltage distribution network directly determines the electric energy quality of a consumer. At present, with the increasing of the electric load, the phenomenon that the load of a transformer exceeds the designed capacity often exists in a low-voltage power supply area. The increase of the transformer area has a plurality of difficulties such as difficulty in land acquisition, increase of investment and the like. However, in operation and maintenance, a full-load operation condition of one transformer area is often existed, and the transformer of the adjacent transformer area is in a low-load-rate operation condition. If a part of heavy-load platform area load is switched to a light-load platform area manually, the problem can be solved, but the following operation problems are often brought:

1. power failure operation is required. Adjusting a part of load to the load rate of the platform area requires applying for power failure, which results in short-time interruption of power utilization of users.

2. The load rate of the heavy load area is not detected timely. The manual adjustment can be implemented only by analyzing historical data of the distribution transformer terminal or the centralized meter reading system and then through a series of complicated procedures such as power failure plan application, dispatching and the like, so that the operation and inspection work cannot be carried out as a normal case.

Therefore, the prior art has poor flexibility in load adjustment and cannot prevent and adjust in advance aiming at problems; the coordination capability is low, and the whole optimization and adjustment are difficult to realize in time. The problem of stable operation of the power distribution network becomes more prominent, and the adjustment performance of the power distribution network needs to be optimized urgently.

Disclosure of Invention

In view of the existing problems, on the one hand, the present disclosure provides an intelligent switching system for transformer load transfer in a transformer area, which monitors the transformer load rate of adjacent transformer areas in real time, and automatically switches a part of the predetermined load from a heavy-load transformer area to a light-load transformer area when the load rate difference between the two transformer areas is large. Two adjacent platform areas are connected in pairs to form a regional automatic distribution system between load platform areas. Therefore, the utilization rate of the stock change is exerted to the maximum extent, the equipment utilization rate is improved, the safe operation capacity of the equipment is improved, the workload of operation and maintenance workers is reduced, the power failure operation and maintenance times are reduced, and the power supply quality is improved. Meanwhile, the transformer load density of the transformer in the transformer area is distributed in a balanced manner, so that the transformer can be operated in the optimal economic operation state, and the loss of the transformer is reduced.

The system comprises: a plurality of bays, each bay including at least one transformer for connecting to one or more loads; an intelligent transfer switch that is switchably connected to a transformer of a first zone and a transformer of a second zone of the plurality of zones; wherein the intelligent change-over switch is connected with a switchable load; the first transformer area and the second transformer area are respectively provided with a transformer area load detection device for detecting the load condition of the transformer area and transmitting the load condition to the intelligent change-over switch; and the intelligent change-over switch dynamically changes over the switchable load connected with the intelligent change-over switch from one of the first transformer area and the second transformer area to the other transformer area according to the load condition.

Further, the detecting the load condition of the affiliated station area comprises detecting a power parameter of the affiliated station area.

Further, the power parameter includes any item of current of the load, instantaneous current of each phase of the platform area, active power, reactive power or power factor.

Further wherein the first and second zones are adjacent.

Further, any two of the plurality of transformer areas are connected with the intelligent selector switch in a shared mode.

Further, the intelligent change-over switch judges whether a preset load change-over condition is met or not according to the received load condition, and performs load change-over under the condition that the condition is met.

Further, the load switching condition includes that the load of the first cell of the current connection is larger than a first threshold value, and the load of the second cell is smaller than a second threshold value.

Further, before the intelligent change-over switch switches the load, the intelligent change-over switch sends a switch permission request to two load detection devices connected with the intelligent change-over switch; after receiving the permission instructions replied by the two load detection devices, executing the load switching; and sending switching completion to the two load detection devices.

Further, the system comprises a user change identification device for storing the load information of the distribution area, wherein the load information comprises a user change relationship; and after the load switching is finished, the user change identification device receives a user change relation recombination instruction and updates information.

Further, wherein the intelligent diverter switch comprises a control unit for executing a switching logic; the power supply unit is used for supplying power to the intelligent change-over switch; the communication unit is used for being in communication connection with an external device and transmitting information; a power main loop unit for switching a connected switchable load between the first zone and the second zone.

Further, the power main circuit unit comprises a thyristor and a relay for realizing the switching.

In another aspect, the present disclosure provides an intelligent transfer switch for intelligently switching loads between stations, including: a control unit for executing a switching logic; the power supply unit is used for supplying power to the intelligent change-over switch; the communication unit is used for being in communication connection with an external device and transmitting information; the power main loop unit is used for switching the connected switchable load between the first transformer area and the second transformer area; the control unit sends a switching instruction to the power main loop unit according to the load conditions of the first station area and the second station area, and in response to the switching instruction, the power main loop unit dynamically switches and connects the switchable load from one of the first station area and the second station area to the other station area.

Further, wherein the power main circuit unit comprises a thyristor and a relay for implementing the switching.

Further, the load condition is detected by the load detection devices of the first and second areas; the load condition includes a power parameter of the cell to which the load condition belongs.

Further wherein the first and second zones are adjacent.

Further, the control unit judges whether a preset load switching condition is met or not according to the load condition, and sends the switching instruction when the condition is met.

Further, the load switching condition includes that the load of the first cell of the current connection is larger than a first threshold value, and the load of the second cell is smaller than a second threshold value.

Further, before the intelligent change-over switch switches the load, the intelligent change-over switch sends a switch permission request to a load detection device connected with the intelligent change-over switch; after receiving an allowing instruction replied by the load detection device, executing the load switching; and sending the switching completion to the load detection device.

Further, after the intelligent change-over switch finishes load switching, a user change relationship reorganization instruction is sent to a user change identification device, so that the user change identification device can update information.

Through the system and the intelligent change-over switch, the load rate of the transformer of the adjacent transformer area is monitored in real time, and when the difference of the load rates of the two transformer areas is large, a part of the preset load is automatically switched from a heavy-load transformer area to a light-load transformer area. Two adjacent platform areas are connected in pairs to form a regional automatic distribution system between load platform areas. Therefore, the utilization rate of the stock change is exerted to the maximum extent, the equipment utilization rate is improved, the safe operation capacity of the equipment is improved, the workload of operation and maintenance workers is reduced, the power failure operation and maintenance times are reduced, and the power supply quality is improved. Meanwhile, the transformer load density of the transformer in the transformer area is distributed in a balanced manner, so that the transformer can be operated in the optimal economic operation state, and the loss of the transformer is reduced.

In another aspect, the present disclosure provides an intelligent switching method for load transfer in a distribution room, including: the intelligent selector switch can switch the transformer connected to the first transformer area and the transformer connected to the second transformer area, so as to realize dynamic switching of switchable loads; respectively arranging transformer area load detection devices in the first transformer area and the second transformer area, and respectively detecting the load condition of the transformer in each of the first transformer area and the second transformer area; transmitting the load condition to the intelligent transfer switch; and the intelligent change-over switch dynamically changes over the switchable load connected with the intelligent change-over switch from one of the first transformer area and the second transformer area to the other transformer area according to the load condition.

In another aspect, the present disclosure provides a method of intelligently switching a switch for intelligently switching loads between stations, wherein the intelligent switch includes a control unit for executing switching logic; the power supply unit is used for supplying power to the intelligent change-over switch; the communication unit is used for being in communication connection with an external device and transmitting information; a power main loop unit for switching a connected switchable load between a first zone and a second zone, wherein: according to the load conditions of a first transformer area and a second transformer area, the controller of the intelligent change-over switch sends a switching instruction to the power main loop unit, and in response to the switching instruction, the power main loop unit dynamically switches and connects the switchable load from one transformer area to the other transformer area.

By the method, the load rates of the transformers in the adjacent transformer areas are monitored in real time, and when the load rate difference between the two transformer areas is large, a part of the preset load is automatically switched from the heavy-load transformer area to the light-load transformer area. Two adjacent platform areas are connected in pairs to form a regional automatic distribution system between load platform areas. Therefore, the utilization rate of the stock change is exerted to the maximum extent, the equipment utilization rate is improved, the safe operation capacity of the equipment is improved, the workload of operation and maintenance workers is reduced, the power failure operation and maintenance times are reduced, and the power supply quality is improved. Meanwhile, the transformer load density of the transformer in the transformer area is distributed in a balanced manner, so that the transformer can be operated in the optimal economic operation state, and the loss of the transformer is reduced.

The foregoing is a summary of the present disclosure, and for the purposes of promoting a clear understanding of the technical means of the present disclosure, the present disclosure may be embodied in other specific forms without departing from the spirit or essential attributes thereof.

Drawings

Fig. 1 is a block load transfer intelligent switching system according to one embodiment of the present disclosure;

fig. 2 is a block load transfer intelligent switching system according to yet another embodiment of the present disclosure, wherein the power supply network includes a plurality of blocks, and any two blocks share and connect an intelligent transfer switch;

FIG. 3 is a schematic diagram of a single-phase load-transfer switch according to one embodiment of the present disclosure;

FIG. 4 is a phase diagram illustrating out-of-phase switching of the single-phase load-shifting switch of FIG. 3;

FIG. 5 is a schematic diagram of a three-phase load-shifting switch, according to one embodiment of the present disclosure;

FIG. 6 is a phase diagram illustrating out of phase switching of the three-phase load-shifting switch of FIG. 5;

FIG. 7 is a block diagram of an intelligent diverter switch according to one embodiment of the present disclosure;

FIG. 8 is a flow chart of a method of intelligent switching of load shifting in a distribution room according to one embodiment of the present disclosure;

fig. 9 is a flowchart of a load transfer intelligent switching method for intelligently switching cells between cells according to yet another embodiment of the present disclosure.

Detailed Description

The embodiments of the present disclosure are described below with specific examples, and other advantages and effects of the present disclosure will be readily apparent to those skilled in the art from the disclosure in the specification. It is to be understood that the described embodiments are merely illustrative of some, and not restrictive, of the embodiments of the disclosure. The disclosure may be embodied or carried out in various other specific embodiments, and various modifications and changes may be made in the details within the description without departing from the spirit of the disclosure. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present disclosure, and the drawings only show the components related to the present disclosure rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.

In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.

Example 1

The technical problem of how to balance the load of the platform area is solved. The following embodiments provide an intelligent switching system for district load transfer. As shown in fig. 1, the intelligent switching system for load transfer in a transformer area comprises: a plurality of bays T1, T2, each bay comprising at least one transformer for connecting one or more loads; an intelligent switch which can switch the transformer connected to the first station zone T1 and the transformer of the second station zone T2; wherein the intelligent change-over switch is connected with a switchable load;

the first transformer area T1 and the second transformer area T2 are respectively provided with a transformer area load detection device for detecting the load condition of the transformer area and transmitting the load condition to the intelligent change-over switch;

and the intelligent change-over switch dynamically changes over the switchable load connected with the intelligent change-over switch from one of the first transformer area and the second transformer area to the other transformer area according to the load condition. The zero lines of the transformers in the two areas can be directly connected, and the connection modes of the connected transformers are the same.

In one embodiment, a cell load detection device in the system monitors the load operation condition of the cell in real time, for example, load current, cell capacity, instantaneous current of each phase, active power, reactive power, power factor and other power parameters, all parameters capable of characterizing the load characteristic can be monitored, and the monitoring technology belongs to the prior art and is not limited herein. And sending the monitored power parameters to an intelligent selector switch.

In one embodiment, the communication between the platform load detection device and the intelligent switch may be wired communication, for example, wired communication using an instant power connection; the communication may also be wireless connection communication, for example, wireless communication technologies such as WIFI, bluetooth, 4G, and 5G, and the communication interconnection between the two technologies is implemented by using the existing wireless communication technology, which is not limited herein.

In one embodiment, after receiving the load operation conditions of the two connected distribution areas, that is, the power parameters of the two distribution areas, the intelligent transfer switch determines whether a preset load transfer condition is met according to the power parameters, and performs load transfer if the preset load transfer condition is met. The preset load switching condition is, for example, that the power parameter of one of the cells reflects that the load of the cell is greater than a given threshold, for example, the given threshold represents a maximum allowable load, and the load of the other cell is less than the given threshold, the load switching is performed to switch the switchable load connected by the intelligent switch from the cell with a large load to the cell with a small load. The load density of the transformer in the transformer area is dynamically distributed in a balanced manner through the operation, so that the transformer can be operated in the optimal economic operation state, and the loss of the transformer is reduced. The specific preset load switching conditions exist in various forms so as to meet the dynamic regulation of the load and be beneficial to the load balance of the two areas.

Example 2

In another embodiment, the power supply network includes a plurality of bays, as shown in fig. 2, any two bays share and connect an intelligent switch, the intelligent switch is connected with one or more switchable loads, receives the power parameters of the load operating conditions of the bays transmitted by the load detection devices of the bays connected thereto, performs the load switching condition judgment as described above, performs load switching when the conditions are met, and further achieves load dynamic adjustment of the whole power supply network, thereby achieving load balancing of the power supply network.

In one embodiment, before switching the load, the intelligent switch sends a switching permission request to a load detection device connected with the intelligent switch; after receiving the permission instructions replied by the two load detection devices, executing the load switching; and sending switching completion information to the load detection device. As shown in fig. 1, the intelligent diverter switch determines whether a preset load switching condition is satisfied according to the received power parameters of the bays T1 and T2, and sends switching permission requests to the load detection devices of the bays T1 and T2, respectively, before load switching is performed if the condition is satisfied; after receiving the permission instructions replied by the two load detection devices, executing the load switching; and then sends handover completion information to the two load detection devices.

In one embodiment, the system further comprises a user change identification device for storing the load information of the platform area, wherein the load information comprises a user change relationship; and after the load switching is finished, the user change identification device receives a user change relation recombination instruction and updates information. And after the intelligent selector switch finishes load switching, sending a user change relationship recombination instruction to a user change identification device so that the user change identification device can update information.

In one embodiment, the structure of the intelligent transfer switch, as shown in fig. 5, includes: a control unit, such as a CPU unit and/or control logic circuitry, for executing switching logic; a power supply unit for supplying power to the intelligent transfer switch, such as a dual power supply circuit; a communication unit for communicating with an external device and transmitting information, for example, a Lora wireless communication unit for realizing wireless communication; the power main loop unit is used for switching the connected switchable load between the two connected transformer areas; the power main loop unit comprises a switching control circuit which is used for realizing the switching connection of switchable loads on phase lines of different transformers through a thyristor and a relay. The control unit sends a switching instruction to the power main loop unit according to the load conditions of the two connected transformer areas, and in response to the switching instruction, the power main loop unit dynamically switches and connects the switchable load from one of the first transformer area and the second transformer area to the other transformer area. The intelligent change-over switch is an important component of a platform load transfer intelligent switch system and can realize 0 millisecond switching. Aiming at the switching requirements of a three-phase load circuit and a single-phase circuit in a power network, the intelligent change-over switch realizes the switching of two types:

1. single phase load switching

A section of single-phase line load is controlled as switchable load between two adjacent sections, and any switching on A, B, C three phases of two sections can be realized. The main circuit of single-phase load switching power is shown in the figure, zero lines N of the two transformers in the area are directly connected, and the connection modes of the connected transformers are the same.

In one embodiment, the switchable loads to which the switching control circuit of the intelligent diverter switch is connected are dynamically switched between any phase of the live line L of the two transformers, i.e. the switchable loads can switch any one of the a-C phases of the transformers connected to the two zones. Dynamic load regulation is realized by monitoring the load operation condition of any one of A-C phases of the transformers in the two areas in real time.

In one embodiment, in-phase switching is implemented. As shown in figure 3, zero lines of the two transformers in the area are directly connected, and the connection modes of the connected transformers are the same, so that the same-phase phases are the same, thyristors at two sides are controlled to be conducted at a zero-crossing point during switching, then the current connection relay is released, the relay at the other side is attracted when the next zero-crossing point is reached, and the thyristor trigger signal is closed after 10 milliseconds, so that uninterrupted switching is completed.

In one embodiment, out of phase switching is implemented. Fig. 4 is a phase diagram illustrating out-of-phase switching of the single-phase load-switching switch of fig. 3. As shown in fig. 3 and 4, in the case of a T2 transformer B phase which is switched to another region by switching a T1 transformer a phase belonging to a different region, at a zero-crossing point T1 where the negative half circumference and the positive half circumference of a T1 transformer a phase transit, a relay thereof is released, and trigger signals of SCRs of a phase a and a T2 transformer B phase of a T1 transformer are sent out at the same time, because the SCRs are half-controlled devices, voltages at two ends of the SCRs are conducted when the SCRs are forward biased and are cut off when the SCRs are reverse biased, at this time, a thyristor of the T1 transformer a phase is conducted, and a thyristor of the T2 transformer B phase; at the zero crossing point T2 of the L line voltage, as the voltage of the B phase is higher than that of the A phase voltage, the thyristor of the B phase of the T2 transformer is switched on, the thyristor of the A phase of the T1 transformer is switched off, and the B phase of the T2 transformer is switched; and then, the T2 transformer B is sequentially attracted by the electric appliances when the peak value of the T2 transformer B phase is reached, so that the switching from the T1 transformer A phase to the T2 transformer B phase is completed, and the power supply is not interrupted in the switching process.

2. Three item load switching

A section of three-phase load circuit is used as switchable loads of two intervals for control, and switching of A- > A, B- > B, C- > C is achieved. As shown in FIG. 5, the zero lines N of the two zone transformers are directly connected, and the connection modes of the connected transformers are the same. The switching control circuit of the intelligent change-over switch dynamically switches the connected switchable loads between the same phases of the live wires L of the two transformers, namely phase A and phase A, phase B and phase B, and phase C. Dynamic load regulation is realized by monitoring the load running conditions of the three phases of the transformers in the two areas in real time.

In one embodiment, when the three-phase load line is switched, because the load may have three-phase motor equipment, the same-phase line must be switched during switching so as to avoid the power utilization accident caused by the reverse rotation of the motor. When the intelligent change-over switch executes the switching, whether the corresponding phases are in the same phase or not is judged, otherwise, the switching action is not executed. Fig. 6 is a phase diagram illustrating the out-of-phase switching of the three-phase load-switching switch of fig. 5. As shown in fig. 5 and 6, when the phase-a zero-crossing point of the transformer a of T1 is released, the side contactor is connected first, and the thyristor trigger signals of the phase-a of the transformer a of T1 and the phase-a of the transformer a of T2 are sent out at the same time, the thyristor on one side with higher voltage on both sides is conducted, and the contactor on the other side is attracted at the peak value of the phase-a voltage, thereby completing the phase-a switching; B. the control sequence for phase C is similar except that each phase is initiated 120 degrees later and the three phases are fully switched after 13.33 milliseconds. The whole switching process has no interruption of power supply.

Although the corresponding structures in the embodiments of the platform load transfer intelligent switch system are described above, it should be clear to those skilled in the art that, based on the above structures, other structures may also be added by those skilled in the art, and such obvious modifications or equivalents should also be included in the scope of the present disclosure, and are not described herein again.

In the following, embodiments of the method of the present disclosure are described, where the steps of the method of the present disclosure implemented by the system are executed, for convenience of description, only the relevant parts of the method of the present disclosure are shown, and details of the specific technology are not disclosed, please refer to the embodiments of the system of the present disclosure.

Example 3

The technical problem of how to balance the load of the platform area is solved. As shown in fig. 8, an intelligent switching method for load transfer in a transformer area is provided.

An intelligent switching method for district load transfer comprises the following steps: the intelligent selector switch can switch the transformer connected to the first transformer area and the transformer connected to the second transformer area, so as to realize dynamic switching of switchable loads; respectively arranging transformer area load detection devices in the first transformer area and the second transformer area, and respectively detecting the load condition of the transformer in each of the first transformer area and the second transformer area; transmitting the load condition to the intelligent transfer switch; and the intelligent change-over switch dynamically changes over the switchable load connected with the intelligent change-over switch from one of the first transformer area and the second transformer area to the other transformer area according to the load condition.

In one embodiment, as shown in fig. 1, the intelligent switch may switch the transformer connected to the first block T1 and the transformer of the second block T2, so as to realize dynamic switching between blocks T1 and T2 of the switchable load; the load detection device of the transformer area T1 detects the load condition of the transformer of the first transformer area T1, and the load detection device of the transformer area T2 detects the load condition of the transformer of the first transformer area T2; the two load detection devices transmit the load conditions to the intelligent selector switch; the intelligent switch dynamically switches the switchable load connected by the intelligent switch from one of the first and second zones T1 and T2 to the other according to the load condition.

In one embodiment, after receiving the load operation conditions of the two connected distribution areas, that is, the power parameters of the two distribution areas, the intelligent transfer switch determines whether a preset load transfer condition is met according to the power parameters, and performs load transfer if the preset load transfer condition is met. The preset load switching condition is, for example, that the power parameter of one of the cells reflects that the load of the cell is greater than a given threshold, for example, the given threshold represents a maximum allowable load, and the load of the other cell is less than the given threshold, the load switching is performed to switch the switchable load connected by the intelligent switch from the cell with a large load to the cell with a small load. The load density of the transformer in the transformer area is dynamically distributed in a balanced manner through the operation, so that the transformer can be operated in the optimal economic operation state, and the loss of the transformer is reduced. The specific preset load switching conditions exist in various forms so as to meet the dynamic regulation of the load and be beneficial to the load balance of the two areas.

In an embodiment, as shown in fig. 2, the power supply network includes a plurality of bays, any two bays share and connect an intelligent switch, and the method for realizing the intelligent switching of the load transfer of the bays on the whole power supply network is implemented, where the intelligent switch is connected with one or more switchable loads, receives the power parameters of the load operation conditions of the bays sent by the load detection devices of the bays connected to the intelligent switch, and performs the judgment of the load switching conditions as described above, and performs the load switching when the conditions are met, thereby implementing the dynamic load adjustment of the whole power supply network, and implementing the load balancing of the power supply network.

In one embodiment, before switching the load, the intelligent switch sends a switching permission request to a load detection device connected with the intelligent switch; after receiving the permission instructions replied by the two load detection devices, executing the load switching; and sending switching completion information to the load detection device. As shown in fig. 1, the intelligent diverter switch determines whether a preset load switching condition is satisfied according to the received power parameters of the bays T1 and T2, and sends switching permission requests to the load detection devices of the bays T1 and T2, respectively, before load switching is performed if the condition is satisfied; after receiving the permission instructions replied by the two load detection devices, executing the load switching; and then sends handover completion information to the two load detection devices.

In one embodiment, the system further comprises a user change identification device for storing the load information of the platform area, wherein the load information comprises a user change relationship; the method further comprises the step of sending a user-to-user relationship reorganization instruction to the user-to-user identification device after the intelligent change-over switch finishes load switching, so that the user-to-user identification device can update information.

In one embodiment, a method for intelligently switching a switch is provided, as shown in fig. 7, for intelligently switching loads between stations, wherein the intelligent switch, as shown in fig. 5, comprises the same structure, and the method comprises: according to the load conditions of a first transformer area and a second transformer area, the controller of the intelligent change-over switch sends a switching instruction to the power main loop unit, and in response to the switching instruction, the power main loop unit dynamically switches and connects the switchable load from one transformer area to the other transformer area.

The foregoing describes the general principles of the present disclosure in conjunction with specific embodiments, however, it is noted that the advantages, effects, etc. mentioned in the present disclosure are merely examples and are not limiting, and they should not be considered essential to the various embodiments of the present disclosure. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the disclosure is not intended to be limited to the specific details so described.

The block diagrams of devices, apparatuses, systems referred to in this disclosure are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".

Also, as used herein, "or" as used in a list of items beginning with "at least one" indicates a separate list, such that, for example, a list of "A, B or at least one of C" means A or B or C, or AB or AC or BC, or ABC (i.e., A and B and C). Furthermore, the word "exemplary" does not mean that the described example is preferred or better than other examples.

It is also noted that in the systems and methods of the present disclosure, components or steps may be decomposed and/or re-combined. These decompositions and/or recombinations are to be considered equivalents of the present disclosure.

Various changes, substitutions and alterations to the techniques described herein may be made without departing from the techniques of the teachings as defined by the appended claims. Moreover, the scope of the claims of the present disclosure is not limited to the particular aspects of the process, machine, manufacture, composition of matter, means, methods and acts described above. Processes, machines, manufacture, compositions of matter, means, methods, or acts, presently existing or later to be developed that perform substantially the same function or achieve substantially the same result as the corresponding aspects described herein may be utilized. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or acts.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present disclosure. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the disclosure. Thus, the present disclosure is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The foregoing description has been presented for purposes of illustration and description. Furthermore, this description is not intended to limit embodiments of the disclosure to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.

Claims (10)

1. An intelligent switching system for load transfer in a platform area, the system comprising:

a plurality of bays, each bay including at least one transformer for connecting to one or more loads;

an intelligent transfer switch that is switchably connected to a transformer of a first zone and a transformer of a second zone of the plurality of zones; wherein the intelligent change-over switch is connected with a switchable load;

the first transformer area and the second transformer area are respectively provided with a transformer area load detection device for detecting the load condition of the transformer area and transmitting the load condition to the intelligent change-over switch;

and the intelligent change-over switch dynamically changes over the switchable load connected with the intelligent change-over switch from one of the first transformer area and the second transformer area to the other transformer area according to the load condition.

2. The bay load transfer intelligent switching system of claim 2, wherein said power parameter comprises any of current of the load, instantaneous current of each phase of the bay, active power, reactive power or power factor.

3. The district load transfer intelligent switch system of claim 1, wherein the intelligent diverter switch determines whether a preset load switching condition is satisfied according to the received load condition, and performs load switching if the condition is satisfied.

4. The zone load transfer intelligence switching system of claim 6, wherein the load switching condition comprises the first zone load being currently connected being greater than a first threshold and the second zone load being less than a second threshold.

5. The bay load transfer intelligent switch system of claim 1, wherein said intelligent diverter switch sends a switch enable request to two load detection devices connected to said intelligent diverter switch before switching the load; after receiving the permission instructions replied by the two load detection devices, executing the load switching; and sending switching completion information to the two load detection devices.

6. The intelligent switching system for load transfer of distribution areas of claim 1, wherein said system further comprises a user change identification means for storing load information of distribution areas, said load information comprising user change relationships; and after the load switching is finished, the user change identification device receives a user change relation recombination instruction and updates information.

7. The bay load transfer intelligent switching system of claim 1, wherein said intelligent diverter switch comprises a control unit for executing switching logic; the power supply unit is used for supplying power to the intelligent change-over switch; the communication unit is used for being in communication connection with an external device and transmitting information; a power main loop unit for switching a connected switchable load between the first zone and the second zone.

8. The bay load transfer intelligent switching system of claim 10, wherein said power main circuit unit comprises a thyristor and a relay for effecting said switching.

9. An intelligent transfer switch for intelligently switching loads between stations, comprising:

a control unit for executing a switching logic;

the power supply unit is used for supplying power to the intelligent change-over switch;

the communication unit is used for being in communication connection with an external device and transmitting information;

the power main loop unit is used for switching the connected switchable load between the first transformer area and the second transformer area;

the control unit sends a switching instruction to the power main loop unit according to the load conditions of the first station area and the second station area, and in response to the switching instruction, the power main loop unit dynamically switches and connects the switchable load from one of the first station area and the second station area to the other station area.

10. An intelligent switching method for load transfer of a transformer area is characterized by comprising the following steps:

the intelligent selector switch can switch the transformer connected to the first transformer area and the transformer connected to the second transformer area, so as to realize dynamic switching of switchable loads;

respectively arranging transformer area load detection devices in the first transformer area and the second transformer area, and respectively detecting the load condition of the transformer in each of the first transformer area and the second transformer area;

transmitting the load condition to the intelligent transfer switch;

and the intelligent change-over switch dynamically changes over the switchable load connected with the intelligent change-over switch from one of the first transformer area and the second transformer area to the other transformer area according to the load condition.

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