CN114094696B - Switching device, method and system of automatic measurement and control terminal of power distribution network - Google Patents
Switching device, method and system of automatic measurement and control terminal of power distribution network Download PDFInfo
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- CN114094696B CN114094696B CN202111253135.5A CN202111253135A CN114094696B CN 114094696 B CN114094696 B CN 114094696B CN 202111253135 A CN202111253135 A CN 202111253135A CN 114094696 B CN114094696 B CN 114094696B
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- 238000006243 chemical reaction Methods 0.000 claims description 19
- 238000012549 training Methods 0.000 abstract description 16
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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Abstract
The application relates to a switching device, a switching method and a switching system of an automatic measurement and control terminal of a power distribution network. The switching device of the automatic measurement and control terminal of the power distribution network comprises: the signal acquisition module is used for acquiring a signal set in a power distribution network line; the logic control module is connected with the signal acquisition module and used for acquiring logic control signals according to the signal set and preset model parameters; the preset model parameters are model parameters of one of a plurality of power distribution network automatic measurement and control terminals; the driving connection module is used for transmitting the signal set to the power distribution network automation measurement and control terminal corresponding to the logic control signal control. The switching device of the power distribution network automatic measurement and control terminal can effectively improve training efficiency of using the power distribution network automatic measurement and control terminal by new students.
Description
Technical Field
The application relates to the technical field of power grids, in particular to a switching device, a switching method and a switching system of an automatic measurement and control terminal of a power distribution network.
Background
With rapid development of the power system, the automation degree of the power system is higher and higher, the training requirements of the power transmission and transformation system and the power distribution network system before the workers go on duty are higher and higher, the field device compliance is required to be higher and higher for the training system, the applicability to brands and the application scenes of rapidly switching different models are more and more, in the existing training process, the mode of manual diversion is required to be carried out for accessing the power distribution network automatic measurement and control terminal (DTU) or the training of the power distribution network automatic measurement and control terminal products of a single brand is only carried out, the training effect is limited, and the training quality of the power distribution network automatic system is seriously affected.
Disclosure of Invention
Based on the above, it is necessary to provide a switching device, method and system for an automatic measurement and control terminal of a power distribution network, which can improve the training efficiency of the automatic measurement and control terminal.
Switching device of distribution network automation measurement and control terminal, the device includes:
The signal acquisition module is used for acquiring a signal set in a power distribution network line;
The logic control module is connected with the signal acquisition module and used for acquiring logic control signals according to the signal set and preset model parameters; the preset model parameters are model parameters of one of a plurality of power distribution network automatic measurement and control terminals;
The driving connection module is used for transmitting the signal set to the power distribution network automation measurement and control terminal corresponding to the logic control signal control.
In one embodiment, the signal set includes a telemetry signal, a remote control signal and a remote signaling signal, the signal acquisition module is configured to acquire a first opening amount according to the telemetry signal, acquire a second opening amount according to the remote control signal, and acquire a third opening amount according to the remote signaling signal, and the logic control module is configured to acquire a logic control signal according to the first opening amount, the second opening amount, the third opening amount and a preset model parameter.
In one embodiment, the signal acquisition module includes three first isolation transformation units, and the three first isolation transformation units are configured to convert acquired telemetry signals, remote control signals, and telemetry signals into first switching-in amounts, second switching-in amounts, and third switching-in amounts in a one-to-one correspondence manner.
In one embodiment, the drive connection module includes:
The first driving unit is connected with the logic control module and is used for receiving the logic control signal and generating a switch unit driving signal;
And the first end of the switch unit is connected with the first driving unit, the second end of the switch unit is connected with the plurality of power distribution network automation measurement and control terminals in a one-to-one correspondence manner, and the switch unit is used for responding to the driving signals of the switch unit to control the connection loop of the first driving unit and one of the power distribution network automation measurement and control terminals to be conducted and disconnected.
In one embodiment, the drive connection module includes:
The first ends of the driving channels are connected with the logic control module, and the second ends of the driving channels are respectively connected with the power distribution network automatic measurement and control terminals in a one-to-one correspondence manner; the logic control signal is used for conducting one of the driving paths.
In one embodiment, the driving path includes:
The second driving unit is connected with the logic control module and is used for receiving the logic control signal and generating a first relay control signal;
And one end of the first relay is connected with the second driving unit, the other end of the first relay is connected with the power distribution network automation measurement and control terminal, and the first relay is used for responding to a first relay control signal so as to control the connection and disconnection of the first relay and the power distribution network automation measurement and control terminal loop.
In one embodiment, the second driving unit includes:
the second relay is connected with the logic control module and is used for receiving the logic control signal and generating a switching triode control signal;
and one end of the switching triode is connected with the second relay, the other end of the switching triode is connected with the first relay, and the switching triode is used for responding to the triode control signal to generate the first relay control signal.
In one embodiment, the drive connection module further comprises:
And one end of each second isolation conversion unit is connected with the logic control module, the other end of each second isolation conversion unit is connected with the second driving unit in a one-to-one correspondence manner, and the second isolation conversion units are used for isolating logic control signals and converting the logic control signals into fourth switching-in quantity so as to control the opening and closing of the second relay.
A switching method of an automatic measurement and control terminal of a power distribution network comprises the following steps:
acquiring a signal set in a power distribution network line;
Obtaining logic control signals according to the signal sets and preset model parameters; the preset model parameters are parameters of a model of one of a plurality of power distribution network automatic measurement and control terminals;
The control drive connection module transmits the signal set to the power distribution network automation measurement and control terminal corresponding to the logic control signal control, the first end of the drive connection module is used for receiving the logic control signal, and the second ends of the drive connection module are respectively connected with the power distribution network automation measurement and control terminals in a one-to-one correspondence mode.
An automatic measurement and control terminal switching system of a power distribution network, comprising:
the switching device of the automatic measurement and control terminal of the power distribution network is as described above;
The power distribution network automatic measurement and control terminals are connected with the second ends of the driving connection modules in the switching device of the power distribution network automatic measurement and control terminals in one-to-one correspondence.
The switching device of the automatic measurement and control terminal of the power distribution network comprises: the signal acquisition module is used for acquiring a signal set in a power distribution network line; the logic control module is connected with the signal acquisition module and used for acquiring logic control signals according to the signal set and preset model parameters; the preset model parameters are model parameters of one of a plurality of power distribution network automatic measurement and control terminals; the driving connection module is used for transmitting the signal set to the power distribution network automation measurement and control terminal corresponding to the logic control signal control. According to the invention, the signal set in the power distribution network is combined with a plurality of model parameters built in the power distribution network automatic measurement and control terminal, the power distribution network automatic measurement and control terminal used by a training student required by a user is called in the training process, the model parameters corresponding to the power distribution network automatic measurement and control terminal required to be used are called, a logic control signal is generated, and the driving connection module responds to the logic control signal, so that the power distribution network is connected with the power distribution network automatic measurement and control terminal required to be used, and the signal set in the power distribution network is transmitted to the power distribution network automatic measurement and control terminal required to be used by the user. The problems of low training efficiency caused by the fact that in the traditional technology, a power distribution network line is connected with power distribution network automatic measurement and control terminals in a one-to-one correspondence mode and then the line needs to be changed in the process of training new students are solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic diagram of a switching device of an automatic measurement and control terminal of a power distribution network according to one embodiment;
FIG. 2 is a second schematic diagram of a switching device of an automatic measurement and control terminal of a power distribution network according to an embodiment;
FIG. 3 is a third schematic diagram of a switching device of an automatic measurement and control terminal of a power distribution network according to an embodiment;
FIG. 4 is a schematic diagram of a switching device of an automatic measurement and control terminal of a power distribution network according to an embodiment;
FIG. 5 is a schematic diagram of a switching device of an automatic measurement and control terminal of a power distribution network according to an embodiment;
FIG. 6 is a schematic diagram of a switching device of an automatic measurement and control terminal of a power distribution network according to an embodiment;
FIG. 7 is a schematic diagram of a switching device of an automatic measurement and control terminal of a power distribution network according to one embodiment
FIG. 8 is a schematic diagram of a switching device of an automatic measurement and control terminal of a power distribution network according to an embodiment;
Fig. 9 is a flow chart of a switching method of an automatic measurement and control terminal of a power distribution network according to an embodiment.
Detailed Description
In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings. Embodiments of the application are illustrated in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that the terms first, second, etc. as used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments should be understood as "electrical connection", "communication connection", and the like if there is transmission of electrical signals or data between objects to be connected.
As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.
In the description of the present specification, reference to the terms "some embodiments," "other embodiments," "desired embodiments," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.
In one embodiment, as shown in fig. 1, a switching device 100 of an automatic measurement and control terminal of a power distribution network is provided, where the switching device 100 of the automatic measurement and control terminal of the power distribution network includes: a signal acquisition module 110, a logic control module 120, and a drive connection module 130. The signal acquisition module 110 is configured to acquire a signal set in a power distribution network line; the logic control module 120 is connected with the signal acquisition module 110 and is used for acquiring logic control signals according to the signal set and preset model parameters; the preset model parameters are model parameters of one of a plurality of power distribution network automatic measurement and control terminals; the first end of the driving connection module 130 is connected with the logic control module, the second ends of the driving connection module 130 are respectively connected with the power distribution network automation measurement and control terminals in a one-to-one correspondence manner, and the driving connection module 130 is used for transmitting the signal set to the power distribution network automation measurement and control terminals corresponding to the logic control signal control.
Specifically, the power distribution network model parameters preset in the logic control module 120 are main technical parameters configured by the power distribution network automation measurement and control terminals with different types, for example, parameters of rated voltage, rated current, frequency and the like. The power distribution network model parameters preset in the logic control module 120 may be preset when leaving the factory, or new power distribution network model parameters may be added to the logic control module 120 according to the needs during the use process.
The switching device of the power distribution network automatic measurement and control terminal is indirectly connected between a power distribution network line and a plurality of power distribution network automatic measurement and control terminals, so that switching connection during the use of the plurality of power distribution network automatic measurement and control terminals respectively is realized in the personnel training process, unnecessary manual line changing and other operations are avoided, and training efficiency is improved.
In one embodiment, the signal set includes a telemetry signal, a remote control signal and a remote signaling signal, the signal acquisition module 110 is configured to acquire a first opening amount according to the telemetry signal, acquire a second opening amount according to the remote control signal, and acquire a third opening amount according to the remote signaling signal, and the logic control module 120 is configured to acquire a logic control signal according to the first opening amount, the second opening amount, the third opening amount and a preset model parameter.
The remote measurement signal, the remote control signal and the remote signaling signal correspond to the remote measurement function, the remote control function and the remote signaling function of the automatic measurement and control terminal of the power distribution network respectively. Specifically, the remote signaling function includes: remote monitoring of information like alarm status, switch position status, etc. The remote signaling signals are collected switch closing states, opening states, energy storage states, grounding signals, air pressure alarm signals and the like in the power distribution network; telemetry functions include: some electric analog quantity is measured and transmitted to an automatic master station of the distribution network through a communication system. The telemetry signals are typically three-phase voltages (or two line voltages), three-phase currents, direct-current voltages in the collected power distribution network, and further, corresponding active, reactive, power factors and the like calculated according to the collected voltages and currents. The remote control function includes: the switch can be controlled remotely, and can be controlled or separated. The remote control signal is a control signal sent by a distribution network automation master station in the collected distribution network.
The signal acquisition module 120 in this embodiment may acquire a telemetry signal, a remote control signal and a remote signaling signal in a signal set, and generate a first opening amount, a second opening amount and a third opening amount corresponding to the telemetry signal, the remote control signal and the remote signaling signal one to one, so as to implement transmission of the signal set in the power distribution network line.
In one embodiment, as shown in fig. 2, a switching device 100 of an automatic measurement and control terminal of a power distribution network is provided. The signal acquisition module 110 includes three first isolation transformation units, where the three first isolation transformation units are configured to convert acquired telemetry signals, remote control signals, and telemetry signals into a first input, a second input, and a third input, which are respectively in one-to-one correspondence.
Specifically, taking fig. 2 as an example, the signal acquisition module 110 includes a telemetry signal acquisition unit 111, a remote control signal acquisition unit 112, a remote signaling signal acquisition unit 113, and three first isolation transformation units. The three first isolation transformation units are a first isolation transformation unit 114, a first isolation transformation unit 115 and a first isolation transformation unit 116, respectively. One end of the telemetry signal acquisition unit 111 is connected with a power distribution network line, the other end of the telemetry signal acquisition unit 111 is connected with the first isolation transformation unit 114, and the telemetry signal acquisition unit 111 is used for acquiring telemetry signals and transmitting the telemetry signals to the first isolation transformation unit 114; one end of the remote control signal acquisition unit 112 is connected with the power distribution network line, the other end of the remote control signal acquisition unit 112 is connected with the first isolation transformation unit 115, and the remote control signal acquisition unit 112 is used for acquiring a remote control signal and transmitting the remote control signal to the first isolation transformation unit 115; one end of the remote signaling signal obtaining unit 113 is connected with the power distribution network line, the other end of the remote signaling signal obtaining unit 113 is connected with the first isolation transformation unit 116, and the remote signaling signal obtaining unit 113 is used for obtaining the remote signaling signal and transmitting the remote signaling signal to the first isolation transformation unit 116.
The first end of the first isolation transformation unit 114, the first isolation transformation unit 115, and the first end of the first isolation transformation unit 116 are connected in a one-to-one correspondence manner as defined above, and are respectively connected to the telemetry signal acquisition unit 111, the remote control signal acquisition unit 112, and the remote signaling signal acquisition unit 113, while the second end of the first isolation transformation unit 111 is connected to the logic control module 120; the first isolation conversion unit 111 is configured to perform photoelectric isolation on the telemetry signal, and perform level conversion to generate a first input; the second end of the first isolation transformation unit 115 is connected with the logic control module 120, and the first isolation transformation unit 115 is used for performing relay isolation on the remote control signal and performing level conversion to generate a second input; the second end of the first isolation conversion unit 116 is connected to the logic control module 120, and the first isolation conversion unit 116 is used for performing photoelectric isolation on the remote signaling signal, and performing level conversion to generate a third input.
The embodiment can achieve good electric insulation capability and anti-interference capability through the isolation and level conversion of the isolation conversion unit. Under the condition of ensuring unidirectional transmission of signals, the reliability of the switching device of the automatic measurement and control terminal of the power distribution network is improved.
In one embodiment, as shown in fig. 3, a switching device 100 of an automatic measurement and control terminal of a power distribution network is provided. The driving connection module 130 includes a first driving unit 131 and a switching unit 132. The first driving unit 131 is connected with the logic control module 120, and the first driving unit 131 is used for receiving the logic control signal and generating a switch unit driving signal; the first end of the switch unit 132 is connected with the first driving unit 131, the second end of the switch unit 132 is connected with the plurality of power distribution network automation measurement and control terminals in a one-to-one correspondence manner, and the switch unit 132 is used for responding to the switch unit driving signal to control the connection loop of the first driving unit 131 and one of the power distribution network automation measurement and control terminals to be turned on and off.
The switch unit may be a single-pole double-throw switch or a single-pole multiple-throw switch, and it is understood that the switch unit in this embodiment is not limited to the above example, but may be other switches with multiple control points, where the number of specific control points may be determined according to the number of connected power distribution network automation measurement and control terminals. Specifically, when one of the power distribution network automation measurement and control terminals is conducted with the loop of the driving unit 131, the power distribution network signal set acquired by the signal acquisition module 110 can be simultaneously transmitted to the power distribution network automation measurement and control terminal with the current loop conducted, so as to complete the work of switching connection and signal set introduction.
In this embodiment, the switching connection of the automatic measurement and control terminal of the power distribution network is selectively realized through the selective conduction loop of the first driving unit 131 and the driving switch unit 132.
In one embodiment, as shown in fig. 4, a switching device 100 of an automatic measurement and control terminal of a power distribution network is provided. The driving connection module 130 includes a plurality of driving paths 130N. The first end of each driving channel 130N is connected with the logic control module 120, and the second end of each driving channel 130N is respectively connected with a plurality of power distribution network automation measurement and control terminals in a one-to-one correspondence manner; the logic control signal is used for controlling the conduction of one of the driving channels 130N.
Specifically, taking fig. 4 as an example, the driving connection module 130 includes four driving paths 130N, first ends of the four driving paths 130N are all connected with the logic control module 120, and second ends of the four driving paths 130N are respectively connected with the power distribution network automation measurement and control terminal of model a, the power distribution network automation measurement and control terminal of model B, the power distribution network automation measurement and control terminal of model C and the power distribution network automation measurement and control terminal of model D in a one-to-one correspondence manner. In order to simplify the drawing, the power distribution network automation measurement and control terminals of multiple types in the embodiment are respectively represented by a type A, a type B, a type C and a type D. The on and off of each driving path 130N may be programmable, and the logic control signals may generate corresponding logic control signals according to the programming corresponding to the number of driving paths 130N. For example, when the connection loop of the power distribution network automation measurement and control terminal of the type B is required to be turned on, the logic control signal may be a high level signal of a second short period in one period, for example, one period is 40ms,10ms is one short period, and the low level signal is "0", the high level signal is "1", and then the signal when the second short period is high level may be "0100". When the driving path 130N connected with the automatic measurement and control terminal of the power distribution network of the type B receives the logic control signal of '0100', the connecting loop is conducted, and when the other driving paths 130N receive the logic control signal of '0100', the connecting loop is kept disconnected.
In this embodiment, through the connection of a plurality of programmable driving paths, when receiving the corresponding logic control signals, the automatic switching connection can be completed rapidly.
In one embodiment, as shown in fig. 5, a switching device 100 of an automatic measurement and control terminal of a power distribution network is provided. In this embodiment, as an example of one of the driving paths 130N, it should be noted that the connection manner of the other driving paths 130N in this embodiment is the same, and specifically, fig. 5 may be referred to. The driving path 130N includes: a second drive unit 133 and a first relay 134. The second driving unit 133 is connected to the logic control module 120, and is configured to receive the logic control signal and generate a first relay control signal; one end of the first relay 134 is connected with the second driving unit 133, the other end of the first relay 134 is connected with the power distribution network automation measurement and control terminal, and the first relay 134 is used for responding to the first relay control signal so as to control the on and off of the first relay 134 and the power distribution network automation measurement and control terminal loop.
Specifically, the switching device 100 of the power distribution network automation measurement and control terminal in this embodiment includes four driving paths as an example. Thus, four second driving units 133 and four first relays 134 are included in the drawing. It should be understood that the four driving paths are included in the present embodiment for example only, and are not intended to limit the scope of the present application.
In one embodiment, as shown in fig. 6, a switching device 100 of an automatic measurement and control terminal of a power distribution network is provided. The second driving unit 133 includes a second relay 1331 and a switching transistor 1332. The second relay 1331 is connected with the logic control module, and the second relay 1331 is used for receiving the logic control signal and generating a switch triode control signal; the switching transistor 1332 has one end connected to the second relay 1331 and the other end connected to the first relay 134, and the switching transistor 1332 is configured to generate a first relay control signal in response to a transistor control signal. The switching device 100 of the power distribution network automation measurement and control terminal in this embodiment includes four driving paths 130N as described above. Thus, four second relays 1331 and four switching transistors 1332 are included. It can be understood that the four automation measurement and control terminals can be connected in this embodiment only for example, and are not used to limit the protection scope of the present application.
The embodiment utilizes the characteristics of long service life, safety, reliability, no mechanical abrasion, high switching speed, small volume and the like of the switching triode to achieve the purposes of fast switching and volume reduction of the switching device of the automatic measurement and control terminal of the power distribution network.
In one embodiment, as shown in fig. 7, a switching device 100 of an automatic measurement and control terminal of a power distribution network is provided. The driving connection module 130 further includes a plurality of second isolation transforming units 135. The switching device 100 of the power distribution network automation measurement and control terminal in this embodiment includes four driving paths 130N as an example. Thus, four second isolated conversion units 135 are included in the figure. It should be understood that the four driving passages 130N are included in the present embodiment for example only, and are not intended to limit the scope of the present application. One end of each second isolation conversion unit 135 is connected to the logic control module 120, and the other end is connected to the second driving unit 133 in a one-to-one correspondence manner, and the second isolation conversion units 135 are configured to isolate logic control signals and convert the logic control signals into fourth switching amounts to control the opening and closing of the second relay 1331.
The embodiment can realize signal isolation through the isolation and level conversion of the isolation conversion unit, and plays roles of protecting the device and filtering noise.
In one embodiment, the logic control module comprises: the controller CPU manages the chip and peripheral circuits. The controller CPU management chip is an STM 32-level chip, and is configured to detect a telemetry signal, a remote control signal, and a remote signaling signal collected by the input signal collection module 110, form a judgment logic in combination with a model of an automatic measurement and control terminal of the power distribution network selected by a user, and perform automatic programming definition on the driving connection module to generate a logic control signal, so as to control the driving connection module, and enable the driving connection module to be connected to the automatic measurement and control terminal of the power distribution network selected by the user.
The peripheral circuit refers to a baseband circuit, a reset circuit, a power circuit, etc., and is a necessary auxiliary circuit part for the controller CPU to manage the chip to work normally, which is not described herein again.
In one embodiment, as shown in fig. 8, a switching device 100 of an automatic measurement and control terminal of a power distribution network is provided. The switching device 100 of the power distribution network automation measurement and control terminal in this embodiment takes four power distribution network automation measurement and control terminals as an example. It can be understood that the four automation measurement and control terminals can be connected in this embodiment only for example, and are not used to limit the protection scope of the present application. The switching device 100 of the power distribution network automation measurement and control terminal comprises: a telemetry signal acquisition unit 111, a remote control signal acquisition unit 112, a remote signaling signal acquisition unit 113, a first isolation transformation unit 114, a first isolation transformation unit 115, a first transformation unit 116, a logic control module 120, a second isolation transformation unit 135, a second relay 1331, a switching triode 1332, and a first relay 134.
In this embodiment, the connection manner between the devices is referred to the connection manner in the switching device 100 of the automatic measurement and control terminal of the power distribution network, which is not described herein.
The embodiment can realize switching connection when a plurality of power distribution network automatic measurement and control terminals are respectively used, avoid unnecessary operations such as manual redirection and the like, and improve training efficiency.
In one embodiment, as shown in fig. 9, a method for switching an automatic measurement and control terminal of a power distribution network is provided, where the method includes:
step S100, a signal set in a power distribution network line is obtained.
The signal set comprises a telemetry signal, a remote control signal and a remote signaling signal, and is a signal set required to be received by an automatic measurement and control terminal of the power distribution network.
Step S200, logic control signals are obtained according to the signal sets and preset model parameters; the preset model parameters are parameters of a model of one of the plurality of power distribution network automatic measurement and control terminals.
And step S300, the control drive connection module transmits the signal set to the power distribution network automation measurement and control terminal corresponding to the logic control signal control, the first end of the drive connection module is used for receiving the logic control signal, and the plurality of second ends of the drive connection module are respectively connected with the power distribution network automation measurement and control terminals in a one-to-one correspondence manner.
It should be understood that, although the steps in the flowchart of fig. 9 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited to the order of execution unless explicitly recited herein, and the steps may be executed in other orders. Moreover, at least a portion of the steps in fig. 9 may include a plurality of steps or stages, which are not necessarily performed at the same time, but may be performed at different times, and the order of the execution of the steps or stages is not necessarily sequential, but may be performed in rotation or alternately with at least a portion of the steps or stages in other steps or other steps.
In one embodiment, a power distribution network automation measurement and control terminal switching system is provided, including: such as the switching device 100 of the power distribution network automation measurement and control terminal and a plurality of power distribution network automation measurement and control terminals. The power distribution network automation measurement and control terminals are connected with the second ends of the driving connection modules in the switching device of the power distribution network automation measurement and control terminals in a one-to-one correspondence mode. The training efficiency of using the power distribution network automatic measurement and control terminal for new students is achieved.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (10)
1. Switching device of distribution network automation measurement and control terminal, its characterized in that, the device includes:
The signal acquisition module is used for acquiring a signal set in a power distribution network line;
The logic control module is connected with the signal acquisition module and used for acquiring logic control signals according to the signal set and preset model parameters; the preset model parameters are model parameters of one of a plurality of power distribution network automatic measurement and control terminals; the logic control module comprises a controller CPU management chip, wherein the controller CPU management chip is used for detecting according to the signal set acquired by the signal acquisition module, forming judgment logic by combining with the model of the power distribution network automatic measurement and control terminal selected by a user, and automatically programming and defining a drive connection module to generate the logic control signal;
The driving connection module is used for transmitting the signal set to the power distribution network automation measurement and control terminal corresponding to the logic control signal control;
The driving connection module comprises a plurality of driving channels, a first end of each driving channel is connected with the logic control module, and a second end of each driving channel is connected with the power distribution network automation measurement and control terminal in one-to-one correspondence; each of the driving paths includes a second driving unit and a first relay; the second driving unit is connected with the logic control module and is used for receiving the logic control signal and generating a first relay control signal; one end of the first relay is connected with the second driving unit, the other end of the first relay is connected with the power distribution network automation measurement and control terminal, and the first relay is used for responding to the first relay control signal to control the connection and disconnection of the first relay and the power distribution network automation measurement and control terminal loop;
the logic control module is also used for programming the on or off of each driving channel according to the number of the driving channels and generating logic control signals corresponding to the driving channels.
2. The apparatus of claim 1, wherein the signal set comprises a telemetry signal, a remote control signal, and a telemetry signal, the signal acquisition module is configured to acquire a first opening amount according to the telemetry signal, a second opening amount according to the remote control signal, and a third opening amount according to the telemetry signal, and the logic control module is configured to acquire a logic control signal according to the first opening amount, the second opening amount, the third opening amount, and the preset model parameter.
3. The apparatus of claim 2, wherein the signal acquisition module comprises three first isolation transformation units, and the three first isolation transformation units are configured to convert the acquired telemetry signal, the remote control signal, and the telemetry signal into the first opening amount, the second opening amount, and the third opening amount in a one-to-one correspondence, respectively.
4. The apparatus of claim 1, wherein the drive connection module comprises:
The first driving unit is connected with the logic control module and is used for receiving the logic control signal and generating a switch unit driving signal;
And the first end of the switch unit is connected with the first driving unit, the second end of the switch unit is connected with a plurality of power distribution network automation measurement and control terminals in one-to-one correspondence, and the switch unit is used for responding to the driving signals of the switch unit to control the connection loop of the first driving unit and one of the power distribution network automation measurement and control terminals to be connected and disconnected.
5. The apparatus of claim 1, wherein the logic control signal is to turn on one of the drive paths.
6. The apparatus of claim 5, wherein the controller CPU management chip is an STM 32-level chip.
7. The apparatus of claim 1, wherein the second driving unit comprises:
The second relay is connected with the logic control module and is used for receiving the logic control signal and generating a switch triode control signal;
And one end of the switching triode is connected with the second relay, the other end of the switching triode is connected with the first relay, and the switching triode is used for responding to the triode control signal to generate a first relay control signal.
8. The apparatus of claim 7, wherein the drive connection module further comprises:
And one end of each second isolation conversion unit is connected with the logic control module, the other end of each second isolation conversion unit is connected with the second driving units in a one-to-one correspondence manner, and the second isolation conversion units are used for isolating the logic control signals and converting the logic control signals into fourth input quantities so as to control the opening and closing of the second relay.
9. The switching device of the power distribution network automatic measurement and control terminal comprises a signal acquisition module, a logic control module and a drive connection module; the method comprises the following steps:
the signal acquisition module acquires a signal set in a power distribution network line;
The logic control module acquires logic control signals according to the signal set and preset model parameters; the preset model parameters are parameters of a model of one of a plurality of power distribution network automatic measurement and control terminals; the logic control module comprises a controller CPU management chip, wherein the controller CPU management chip is used for detecting according to the signal set acquired by the signal acquisition module, forming judgment logic by combining with the model of the power distribution network automatic measurement and control terminal selected by a user, and automatically programming and defining a drive connection module to generate the logic control signal;
The driving connection module transmits the signal set to a power distribution network automation measurement and control terminal corresponding to the logic control signal control, a first end of the driving connection module is used for receiving the logic control signal, and a plurality of second ends of the driving connection module are respectively connected with a plurality of power distribution network automation measurement and control terminals in a one-to-one correspondence manner;
the driving connection module comprises a plurality of driving channels, a first end of each driving channel is connected with the logic control module, and a second end of each driving channel is connected with the power distribution network automation measurement and control terminal in a one-to-one correspondence manner; each of the driving paths includes a second driving unit and a first relay; the second driving unit is connected with the logic control module and is used for receiving the logic control signal and generating a first relay control signal; one end of the first relay is connected with the second driving unit, the other end of the first relay is connected with the power distribution network automation measurement and control terminal, and the first relay is used for responding to the first relay control signal to control the connection and disconnection of the first relay and the power distribution network automation measurement and control terminal loop;
the logic control module is also used for programming the on or off of each driving channel according to the number of the driving channels and generating logic control signals corresponding to the driving channels.
10. The utility model provides a distribution network automation measurement and control terminal switching system which characterized in that includes:
switching device of an automated measurement and control terminal of a power distribution network according to any of claims 1 to 8;
And the power distribution network automatic measurement and control terminals are connected with the second ends of the driving connection modules in the switching device of the power distribution network automatic measurement and control terminals in a one-to-one correspondence manner.
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| NO314557B1 (en) * | 2000-02-01 | 2003-04-07 | Abb Research Ltd | Procedure for control and communication |
| CN106712281A (en) * | 2015-08-06 | 2017-05-24 | 江苏云涌电子科技股份有限公司 | Power distribution network automatic feeder terminal unit (FTU) system |
| CN105242154B (en) * | 2015-11-16 | 2018-07-10 | 国电南瑞科技股份有限公司 | A kind of automatic test device of distribution terminal |
| CN105553103B (en) * | 2016-01-21 | 2018-04-13 | 中国农业大学 | A kind of region active distribution network Energy Management System and method |
| CN106655513B (en) * | 2016-12-28 | 2017-12-19 | 上海金智晟东电力科技有限公司 | A kind of type feeder automation test system on the spot |
| CN207730819U (en) * | 2018-01-26 | 2018-08-14 | 河南云拓智能科技有限公司 | Multicircuit relay intelligent switch based on AC current collecting |
| CN109256865A (en) * | 2018-11-16 | 2019-01-22 | 国家电网有限公司 | A kind of distribution network automated terminal with self-checking function |
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