CN109598996B - Load cutting training system for distribution transformer area - Google Patents
Load cutting training system for distribution transformer area Download PDFInfo
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- CN109598996B CN109598996B CN201811300427.8A CN201811300427A CN109598996B CN 109598996 B CN109598996 B CN 109598996B CN 201811300427 A CN201811300427 A CN 201811300427A CN 109598996 B CN109598996 B CN 109598996B
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Abstract
The invention provides a load cutting training system for a distribution transformer area, which comprises: the load cutting simulator and the load cutting setting module; the load cutting simulator comprises at least two simulation distribution transformer areas and a simulation load circuit, wherein a first end of the simulation load circuit is connected with an electric energy metering device; each analog distribution transformer area comprises terminal equipment for data communication and a transformer; the load cutting setting module sends a load cutting command to the load cutting simulator, controls the second end of the simulated load line to be switched and connected between the transformers of at least two simulated distribution transformer areas, and is also connected with the terminal equipment of the simulated distribution transformer area when the second end of the simulated load line is connected with the transformer of one simulated distribution transformer area. The invention can be used for training operation and maintenance personnel in the power industry, and can simulate the data communication problem between the electric energy metering device connected on the load line and the terminal equipment when the load line is cut between different distribution transformer areas.
Description
Technical Field
The invention relates to the technical field of electric power, in particular to a load cutting training system for a distribution transformer area.
Background
Because the operation of a large amount of input of the centralized meter reading automation system of the low-voltage distribution transformer (distribution transformer) transformer area needs a large amount of operation maintenance personnel, but the phenomenon of load cutting faults of the distribution transformer area often appears on the spot, and the spot personnel can not judge and solve the problems in time due to the reasons of technical level.
At present, no mature practical training system or device in the aspect of load cutting of the distribution transformer area exists, so that related training is difficult to develop. And the load cutting fault seriously affects the accuracy of information acquisition, processing and real-time monitoring of a centralized reading user in a low-voltage distribution transformer area, and further seriously affects the functions of automatic information acquisition, metering abnormity monitoring, power quality monitoring, power consumption analysis and management, related information release and monitoring metering, so that all information is seriously wrong. Therefore, the load cutting fault of the low-voltage distribution transformer area is judged in time, and the analysis, the solution and the processing are important guarantees for guaranteeing the normal operation of the centralized meter reading and collecting system of the low-voltage distribution transformer area.
Disclosure of Invention
In order to solve the technical problems, the invention provides a distribution transformer area load cutting training system which can be used for training operation and maintenance personnel in the power industry, simulate the data communication problem between an electric energy metering device and terminal equipment connected on a load line when the load line is cut between different distribution transformer areas, and demonstrate the process to students.
The invention provides a load cutting training system for a distribution transformer area, which comprises: the load cutting simulator and the load cutting setting module;
the load cutting simulator comprises at least two simulation distribution transformer areas and at least one simulation load circuit, the at least two simulation distribution transformer areas and the at least two actual distribution transformer areas are arranged in the same way, and the first end of the simulation load circuit is connected with an electric energy metering device; each analog distribution transformer area comprises terminal equipment for data communication and a transformer;
the load cutting setting module is used for sending a load cutting command to the load cutting simulator so as to control the second end of a simulated load line in the load cutting simulator to be switched and connected between the transformers of the at least two simulated distribution transformer areas, and when the second end of the simulated load line is connected with the transformer of one simulated distribution transformer area, the second end of the simulated load line is also connected with the terminal equipment of the simulated distribution transformer area, and when the terminal equipment is matched with the electric energy metering device, the terminal equipment establishes a communication connection relation with the electric energy metering device through a power line of the simulated load line.
Preferably, the load cutting setting module is further configured to:
and displaying the type of the load cutting for a user to select, and outputting a corresponding load cutting command to the load cutting simulator according to the type of the load cutting selected by the user so as to control the connection of the second end of a simulation load circuit in the load cutting simulator and a transformer of a corresponding simulation distribution transformer area.
Preferably, the method further comprises the following steps: a device power supply and a device protector;
the device power supply is electrically connected with the load cutting simulator through the device protector;
the device protector is used for disconnecting the device power supply from the load cutting simulator when the load cutting simulator is abnormal.
Preferably, the load cutting setting module is further configured to:
and receiving a load cutting canceling command input by a user, and controlling the second end of a simulation load circuit in the load cutting simulator to be disconnected with a transformer of a simulation distribution transformer area according to the load cutting canceling command.
Preferably, the method further comprises the following steps: latching the relay;
the second end of each simulation load line is respectively connected with the transformers of the at least two simulation distribution transformer areas through different circuit breakers, and a closing coil and an opening coil are arranged in each circuit breaker;
the load cutting setting module is electrically connected with the latching relay and used for transmitting a load cutting command to the latching relay, enabling a closing coil of the circuit breaker to be electrified by controlling the latching relay, realizing connection between the second end of the simulated load circuit and a transformer of the distribution transformer area, and transmitting a load cutting canceling command to the latching relay, and enabling a separating coil of the circuit breaker to be electrified by controlling the latching relay, so that disconnection between the second end of the simulated load circuit and the transformer of the distribution transformer area is realized.
Preferably, each simulated distribution transformer area in the load cutting simulator is arranged inside the corresponding actual distribution transformer area.
Preferably, the method further comprises the following steps: an information receiving module;
the information receiving module is in communication connection with the terminal equipment and is used for acquiring the metering parameters of the electric energy metering device connected with the terminal equipment through the terminal equipment.
The implementation of the invention has the following beneficial effects: the invention can demonstrate the problem of communication faults of the electric energy metering device on the load line to the operation and maintenance personnel in the power industry by simulating the actual distribution and transformation station area and the load line and connecting the simulated load line with the actual electric energy metering device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic block diagram of a load cutting training system for a distribution transformer area provided by the invention.
Fig. 2 is a schematic block diagram of a load cutting simulator provided by the present invention.
Fig. 3 is a wiring diagram between the analog load line and the transformer line of the analog distribution area in an embodiment of the present invention.
Fig. 4 is another specific schematic block diagram of the load cutting training system for the distribution transformer area provided by the invention.
Detailed Description
The invention provides a load cutting training system for a distribution transformer area, as shown in fig. 1, the training system comprises: the cutting simulator of the load 1, load cut and set up the module 2.
As shown in fig. 2, the load cutting simulator 1 includes at least two simulated distribution transformer areas 11 and at least one simulated load line 12, the at least two simulated distribution transformer areas 11 and the at least two actual distribution transformer areas are arranged in the same manner, and a first end of the simulated load line 12 is connected to an electric energy metering device 3 (it should be noted that, here, the electric energy metering device 3 may be an electric energy meter or an electric energy metering cabinet); each of the analog distribution transformer areas 11 includes a terminal device for data communication and a transformer. The layout of the simulated distribution transformer area 11 and the simulated load line 12 in the load cutting simulator 1 can refer to the layout mode of the centralized meter reading site of the low-voltage distribution transformer area. The load cut simulator 1 has the same external appearance, logical relationship and failure phenomenon as the real load cut.
The load cutting setting module 2 is configured to send a load cutting command to the load cutting simulator 1, so as to control the second end of the simulated load line 12 in the load cutting simulator 1 to switch connection between the transformers of at least two simulated distribution transformer areas 11, and when the second end of the simulated load line 12 is connected to a transformer of one simulated distribution transformer area 11, further connect to a terminal device of the simulated distribution transformer area 11, and when the terminal device is matched with the electric energy metering device 3 (for example, the terminal device stores an ID code of the electric energy metering device 3 therein, and in general, the ID code of one electric energy metering device 3 is stored only in the terminal device of one simulated distribution transformer area 11), the terminal device establishes a communication connection relationship with the electric energy metering device 3 through a power line of the simulated load line 12, and after the terminal device establishes a communication connection relationship with the electric energy metering device 3 through the power line of the simulated load line 12, the power line of the analog load line 12 is used for transmitting the power carrier signal between the terminal device and the electric energy metering device 3. The terminal device may be a terminal router, which in turn may communicate with other information receiving module systems or terminals.
The load cutting setting module 2 may be an information receiving module, and software for setting a load cutting fault is provided therein. The second end of the analog load line 12 is controlled to be switched and connected between the transformers of the at least two analog distribution transformer areas 11, specifically, the second end of the analog load line 12 is controlled to perform voltage line cutting or voltage and current line cutting between the transformers of the at least two analog distribution transformer areas 11. When the analog load line 12 does not distinguish between current and voltage, the second end of the analog load line 12 is controlled to perform voltage line cutting between the transformers of the at least two analog distribution transformer areas 11, and when the analog load line 12 distinguishes between current and voltage (for example, when the analog load line 12 is connected to a transformer through a three-phase transformer), the second end of the analog load line 12 is controlled to perform voltage line cutting and current line cutting between the transformers of the at least two analog distribution transformer areas 11.
Generally speaking, a first end of the analog load line 12 is electrically connected to the electric energy metering device 3, a second end of the analog load line 12 is connected to the terminal equipment and the transformer of the analog distribution transformer area 11, when the terminal equipment of the analog distribution transformer area 11 is matched with the electric energy metering device 3, data communication between the terminal equipment of the analog distribution transformer area 11 and the electric energy metering device 3 can be performed through the power line of the analog load line 12, for example, communication between the terminal equipment of the analog distribution transformer area 11 and the electric energy metering device 3 is performed through a power carrier signal.
It should be noted that the simulated distribution transformer area 11 is the same as the actual distribution transformer area, that is, the device devices included in the simulated distribution transformer area 11 are all the same as the actual distribution transformer area, the terminal devices of the simulated distribution transformer area 11 are also all the same as the internal settings of the terminal devices of the actual distribution transformer area corresponding thereto, and when the terminal devices of the actual distribution transformer area are matched with the electric energy metering device 3 through the actual load lines to establish the communication connection relationship, the terminal devices of the simulated distribution transformer area 11 corresponding to the actual distribution transformer area are also matched with the electric energy metering device 3 through the simulated load lines 12 to establish the communication connection relationship.
For example, the actual distribution area includes: the first actual distribution transformer area and the second actual distribution transformer area, the simulation distribution transformer area 11 includes: the system comprises a first simulation distribution transformer area and a second simulation distribution transformer area, wherein the first simulation distribution transformer area is completely the same as the first actual distribution transformer area, and the second simulation distribution transformer area is completely the same as the second actual distribution transformer area. The simulation load line 12 is identical to an actual load line, when a first end of the actual load line is connected with the electric energy metering device 3, a second end of the actual load line is connected with a transformer of a first actual distribution transformer area, and a terminal device of the first actual distribution transformer area is connected with the electric energy metering device 3 at the first end of the actual load line through the actual load line, if the terminal device of the first actual distribution transformer area can be matched with the electric energy metering device 3 and establish a communication connection relationship, when the first end of the simulation load line 12 is connected with the electric energy metering device 3 and the second end of the simulation load line 12 is connected with the transformer of the first simulation distribution transformer area, the terminal device of the first simulation distribution transformer area can establish a communication connection with the electric energy metering device 3.
When the second end of the actual load line is connected to the terminal device of the second actual distribution transformer area, if the terminal device is not matched with the electric energy metering device 3, then when the second end of the simulated load line 12 is connected to the terminal device of the second simulated distribution transformer area, the terminal device of the second simulated distribution transformer area is also not matched with the electric energy metering device 3.
When the terminal device is not matched with the electric energy metering device 3, the terminal device cannot acquire the electric energy information recorded on the electric energy metering device 3, so that the electric energy information corresponding to the electric energy metering device 3 cannot be uploaded, and the operation and maintenance personnel cannot acquire the electric energy information of the electric energy metering device 3 through the corresponding terminal device.
According to the invention, through simulating the actual distribution transformer area and the load circuit, the fault situation which may be encountered during centralized meter reading can be demonstrated to the student, and the possibility that communication cannot be realized due to mismatching between the terminal equipment and the electric energy metering device 3 caused by load circuit switching can be considered when relevant technical personnel find that the electric energy information of the electric energy metering device 3 cannot be collected during centralized meter reading. The invention provides a device for providing technical training and technical grade identification for personnel in a low-voltage distribution transformer area, particularly on low-voltage power centralized meter reading operation and maintenance, meter installation and power connection, meter reading accounting, power utilization inspection, metering automatic information acquisition and corresponding management posts.
Further, the load cutting setting module 2 is also configured to: and displaying the type of the load cutting for the user to select, and outputting a corresponding load cutting command to the load cutting simulator 1 according to the type of the load cutting selected by the user so as to control the second end of the simulated load line 12 in the load cutting simulator 1 to be connected with the transformer of the corresponding simulated distribution transformer area 11. Here, the types of load cutting are specifically: the second end of the corresponding analog load line 12 needs to be connected to the transformer of which analog distribution area 11. For example, as shown in fig. 3, each of the analog load lines 12 may be connected to a different analog distribution area 11 transformer line by a different line. A circuit breaker 13 is arranged between each analog load circuit 12 and each analog distribution transformer area 11 transformer circuit, and the analog load circuit 12 and the analog distribution transformer area 11 transformer circuit are controlled to be connected or disconnected by controlling the on and off of the circuit breaker 13.
Further, as shown in fig. 4, the load cutting training system for the distribution transformer area further includes: a device power supply 4 and a device protector 5.
The device power supply 4 is used for supplying power to the analog distribution transformer area 11 and the load cutting setting module 2.
The device power supply 4 is electrically connected with the load cutting simulator 1 through the device protector 5, and the device protector 5 is used for disconnecting the device power supply 4 from the load cutting simulator 1 when the load cutting simulator 1 is abnormal. Here, the abnormal condition of the load shedding simulator 1 means that the situations such as overcurrent and overvoltage may occur in the analog distribution transformer area 11 or the analog load line 12, which affects the safety of the load shedding simulator 1.
Further, the load cutting setting module 2 is also configured to: and receiving a load cutting canceling command input by a user, and controlling the second end of the analog load circuit 12 in the load cutting simulator 1 to be disconnected with the transformer of the analog distribution transformer area 11 according to the load cutting canceling command.
Further, the distribution transformer area load cutting training system further comprises: the relay 6 is locked.
The second end of each analog load circuit 12 is connected with the transformers of at least two analog distribution transformer areas 11 through different circuit breakers 13, and a closing coil and an opening coil are arranged in each circuit breaker 13.
Load cutting sets up module 2 and latching relay 6 electric connection for carry load cutting order to latching relay 6, make the combined floodgate coil of circuit breaker 13 to receive electricity through control latching relay 6, realize that the second end of simulation load circuit 12 is connected with between the transformer of joining in marriage the transformer district, still be used for carrying load cutting cancellation order to latching relay 6, make the separating brake coil of circuit breaker 13 receive electricity through control latching relay 6, realize that the second end of simulation load circuit 12 and join in marriage disconnected connection between the transformer of transformer district.
Further, each simulated distribution transformer area 11 in the load cutting simulator 1 is arranged inside its corresponding actual distribution transformer area.
Further, the distribution transformer area load cutting training system further comprises: and an information receiving module.
The information receiving module is in communication connection with the terminal equipment and is used for acquiring and displaying the metering parameters of the electric energy metering device 3 connected with the terminal equipment through the terminal equipment. The information receiving module can be a computer or a mobile phone terminal.
The specific working principle of the training system provided by the invention is as follows:
the device power supply 4 is switched on, the power supply in the device power supply 4 is output to the load cutting simulator 1 and the load cutting setting module 2 through the device protector 5, the single chip microcomputer in the load cutting setting module 2 starts to work, and meanwhile the load cutting simulator 1 starts to work. When the load is cut, the load cutting type to be carried out is set on the load cutting setting module 2, the corresponding type is clicked to send a load cutting command, the load cutting command passes through the auxiliary contact of the intermediate latching relay 6 to the closing coil of the circuit breaker 13, the closing coil is electrified, and the load cutting setting operation is completed. When the current load cutting is cancelled, a corresponding load cutting cancelling command is clicked on the load cutting setting module 2, and the load cutting cancelling command passes through the auxiliary contact of the intermediate latching relay 6 to the opening coil of the circuit breaker 13. And the opening coil is electrified, and the load cutting canceling operation is completed.
The load cutting fault device is reasonably hidden and arranged inside the practical training device, and transmits information to the corresponding load cutting meter tail (the meter tail of the electric energy metering device 3) through a data line (a power line of the simulated load line 12), so that the electricity consumption information output by the load cutting simulator 1 is ensured to be the same as the electricity consumption information corresponding to the real load cutting phenomenon.
The load cutting setting module 2 is internally provided with a single chip microcomputer loaded with intelligent software, and can directly display a load cutting setting (namely the type of load cutting) diagram and the phenomenon of load cutting. The load cutting setting module 2 can set the common fault types of load cutting in real operation, can set the cutting types of the simulated load line 12 according to the content to be trained, and can allow students to analyze, search and eliminate the common fault types.
The invention increases the training system for cutting the load of the low-voltage distribution transformer area from theoretical training to actual operation training, and enables students to observe the fault state corresponding to load cutting, measure the power consumption data of the electric energy metering device 3 corresponding to the fault state, analyze the power consumption data information, judge the fault type and recover the operation and training of the whole process of the fault state. The trainees can accurately judge the load cutting state through the measurement of the electrical parameters in the practical training, and then the qualitative analysis is carried out on the operation conditions of the distribution transformer area, so that the trainees can achieve the effect of achieving twice the result with half the effort on improving the corresponding skill level of the trainees.
In summary, the load cutting training system provided by the invention can demonstrate the possible fault situations to students during centralized meter reading, and help the relevant technical personnel to consider the possibility that communication cannot be realized due to mismatching between the terminal equipment and the electric energy metering device 3 caused by load line switching when finding that the electric energy information of the electric energy metering device 3 cannot be collected during centralized meter reading.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (7)
1. The utility model provides a distribution transformer district load cutting training system which characterized in that includes: the load cutting simulator and the load cutting setting module;
the load cutting simulator comprises at least two simulation distribution transformer areas and at least one simulation load circuit, the at least two simulation distribution transformer areas and the at least two actual distribution transformer areas are arranged in the same way, and the first end of the simulation load circuit is connected with an electric energy metering device; each analog distribution transformer area comprises terminal equipment for data communication and a transformer;
the load cutting setting module is used for sending a load cutting command to the load cutting simulator so as to control the second end of a simulated load line in the load cutting simulator to be switched and connected between the transformers of the at least two simulated distribution transformer areas, and when the second end of the simulated load line is connected with the transformer of one simulated distribution transformer area, the second end of the simulated load line is also connected with the terminal equipment of the simulated distribution transformer area, and when the terminal equipment is matched with the electric energy metering device, the terminal equipment establishes a communication connection relation with the electric energy metering device through a power line of the simulated load line.
2. The distribution transformer area load cutting training system of claim 1, wherein the load cutting setting module is further configured to:
and displaying the type of the load cutting for a user to select, and outputting a corresponding load cutting command to the load cutting simulator according to the type of the load cutting selected by the user so as to control the connection of the second end of a simulation load circuit in the load cutting simulator and a transformer of a corresponding simulation distribution transformer area.
3. The distribution transformer area load cutting training system of claim 1, further comprising: a device power supply and a device protector;
the device power supply is electrically connected with the load cutting simulator through the device protector;
the device protector is used for disconnecting the device power supply from the load cutting simulator when the load cutting simulator is abnormal.
4. The distribution transformer area load cutting training system of claim 1, wherein the load cutting setting module is further configured to:
and receiving a load cutting canceling command input by a user, and controlling the second end of a simulation load circuit in the load cutting simulator to be disconnected with a transformer of a simulation distribution transformer area according to the load cutting canceling command.
5. The distribution transformer area load cutting training system of claim 1, further comprising: latching the relay;
the second end of each simulation load line is respectively connected with the transformers of the at least two simulation distribution transformer areas through different circuit breakers, and a closing coil and an opening coil are arranged in each circuit breaker;
the load cutting setting module is electrically connected with the latching relay and used for transmitting a load cutting command to the latching relay, enabling a closing coil of the circuit breaker to be electrified by controlling the latching relay, realizing connection between the second end of the simulated load circuit and a transformer of the distribution transformer area, and transmitting a load cutting canceling command to the latching relay, and enabling a separating coil of the circuit breaker to be electrified by controlling the latching relay, so that disconnection between the second end of the simulated load circuit and the transformer of the distribution transformer area is realized.
6. The distribution transformer area load cutting training system as recited in claim 1, wherein each simulated distribution transformer area in the load cutting simulator is disposed within its corresponding actual distribution transformer area.
7. The distribution transformer area load cutting training system of claim 1, further comprising: an information receiving module;
the information receiving module is in communication connection with the terminal equipment and is used for acquiring the metering parameters of the electric energy metering device connected with the terminal equipment through the terminal equipment.
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| CN106911137A (en) * | 2017-04-13 | 2017-06-30 | 贵州电网有限责任公司电力科学研究院 | A kind of optimization method of layouting of three unbalanced power switching device |
| CN207780991U (en) * | 2017-06-29 | 2018-08-28 | 郑州万特电气股份有限公司 | A kind of low-tension distribution box actual training device for rural power grids power distribution station system |
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