CN109617747B - Load cutting simulation fault training system for low-voltage power centralized meter reading - Google Patents
Load cutting simulation fault training system for low-voltage power centralized meter reading Download PDFInfo
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- CN109617747B CN109617747B CN201910061192.XA CN201910061192A CN109617747B CN 109617747 B CN109617747 B CN 109617747B CN 201910061192 A CN201910061192 A CN 201910061192A CN 109617747 B CN109617747 B CN 109617747B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/14—Network analysis or design
- H04L41/145—Network analysis or design involving simulating, designing, planning or modelling of a network
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0659—Management of faults, events, alarms or notifications using network fault recovery by isolating or reconfiguring faulty entities
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Abstract
The invention discloses a load cutting simulation fault training system for low-voltage electric power centralized meter reading, which comprises a master controller and a plurality of areas divided according to areas, wherein each area is provided with a practical training cabinet, a plurality of meters are arranged in the practical training cabinet, each meter is allocated with an IP address and a port, and each meter is connected with a master control board through a communication line and a serial server; each meter is provided with a load cutting fault simulator, the load cutting fault simulator is connected with the master controller through a wireless network, and the load cutting fault simulator is connected with the meters through a relay and used for controlling the meters; all load cutting fault simulators in one transformer area are connected with a virtual load source through voltage isolation transformers or current isolation transformers. The invention raises the training system for cutting the load of the low-voltage distribution transformer area from theoretical training to actual operation training, and realizes network simulation operation and training through a network.
Description
Technical Field
The invention relates to the field of network teaching and training, in particular to a load cutting simulation fault training system for low-voltage power centralized meter reading.
Background
Because the operation of putting into a large amount of low pressure distribution transformer district centralized meter reading automation system needs a large amount of operation maintainers, but the phenomenon of distribution transformer district load cutting trouble can often appear in the scene simultaneously, and field personnel can't judge in time and solve this type of problem because of technical level's reason.
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.
When one transformer is overloaded or has faults, part of or all the loads on the transformer are switched to the other transformer for power supply; in addition, when the load of a small-capacity transformer is overlarge and the load of a large-capacity transformer is very small, the operation of interchanging the transformers is carried out when the power supply of the small-capacity transformer can meet the requirement of power supply, and the load cutting training system simulates the working state and the wiring state of the transformer and the state and the parameters of a meter when the load is switched by operation and maintenance personnel after the fault phenomenon occurs. Training personnel can set load cutting through a training device, and then observe the fault state of the gauge after cutting and the measured data; the working principle of load cutting, how to wire and switch the running state of the subsequent meter are familiar, so that the problems encountered in the subsequent work can be solved successfully. And when the load switching device has misoperation and meter information can not be read, a new fault searching direction is given to operation and maintenance personnel.
The power supply department utilizes the double power supply switching device or other automatic switching devices to carry out background or on-site automatic switching, but these conditions are not common, and the power supply department can not use the frequent setting of this kind of trouble of two transformers to supply power maintainer study again, design this kind of simulation training set who simulates the actual power supply mode this moment is very necessary, the student sets up the trouble under the situation of simulation, observe the difference of trouble strapping table and real strapping table to and the cutting principle, when circuit or strapping table trouble takes place in reality, can get rid of smoothly, reach the switching purpose.
Disclosure of Invention
In order to solve the technical problems, the invention provides a load cutting training system in a low-voltage power centralized meter reading operation and maintenance system in the power industry, which provides technical training and technical grade identification for low-voltage distribution transformer areas, particularly for personnel on low-voltage power centralized meter reading operation and maintenance, meter installation and power connection, meter reading accounting, power utilization inspection, metering automation information acquisition and corresponding management posts.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: 1. the utility model provides a load cutting simulation fault training system that meter reading is concentrated to low-voltage electric power, its characterized in that, includes master controller and a plurality of platform districts according to regional division, wherein:
each platform area is provided with a training cabinet, a plurality of meters are arranged in the training cabinet, each meter is allocated with an IP address and a port, and each meter is connected with a master control board through a communication line and a serial server;
each meter is provided with a load cutting fault simulator, the load cutting fault simulator is connected with the master controller through a wireless network, and the load cutting fault simulator is connected with the meters through a relay and used for controlling the meters;
all load cutting fault simulators in one transformer area are connected with a virtual load source through a voltage isolation transformer or a current isolation transformer; the virtual load source is connected with the master controller through the Ethernet and the serial server, and can automatically alarm and cut off the power supply when the virtual load source fails;
the process that the master controller sends a load cutting fault instruction to the gauge a of the transformer area A is as follows:
the master controller finds out the IP address and the port corresponding to the meter a, and then generates: the load cutting fault simulator generates a corresponding fault instruction and sends the fault instruction to a relay connected with the load cutting fault simulator, a normally closed point of the relay is opened, a normally open point of the relay is closed, and the corresponding meter a is cut to a position in the corresponding platform area A, wherein the position requires cutting in the instruction.
Preferably, the virtual load source is used for converting an input single-phase alternating current signal into a three-phase alternating current signal, and the alternating current signal outputs a current of 0-5A.
Preferably, the current "load cut failure" procedure is cancelled as follows:
finding out the IP address and port corresponding to the meter a in the master controller, and then generating: and a load cutting fault command is cancelled and is sent to a load cutting fault simulator corresponding to the meter a through a wireless network, and the load cutting fault simulator generates a corresponding fault cancelling command and controls the meter a to cancel a corresponding fault through a relay.
Preferably, the input and output terminals of the load cutting fault simulator are connected with the normally closed point of the relay connected with the load cutting fault simulator.
Preferably, the stations are connected through a closing coil.
Preferably, the operation process of cutting the B meter of the platform area B to the a meter of the platform area A is as follows:
s1: the master controller sends out: the method comprises the steps that a meter B of a transformer area B is cut to a meter a of the transformer area A in a cross-transformer area mode, and the command is sent to a load cutting fault simulator a and a load cutting fault simulator B which are connected with the meter a and the meter B respectively through a wireless network; the load cutting fault simulator controls a voltage relay corresponding to the load cutting fault simulator to be electrified, and a normally closed point is disconnected; and meanwhile, the load cutting fault simulator controls the voltage relay corresponding to the load cutting fault simulator to be electrified, the normally open point is closed, and the voltage is cut to the meter a bridging the transformer area A.
Preferably, the operation process of realizing the interchange cutting of the B meter of the platform area B and the a meter of the platform area A is as follows:
the first step is as follows: s1: the master controller sends out: the method comprises the steps that a meter B of a transformer area B and a meter a of a transformer area A are switched and cut, and are sent to an a load cutting fault simulator and a B load cutting fault simulator which are connected with the meter a and the meter B respectively through a wireless network; the a load cutting fault simulator controls a voltage relay corresponding to the a load cutting fault simulator to be electrified, and a normally closed point is disconnected; meanwhile, the load cutting fault simulator controls a voltage relay corresponding to the load cutting fault simulator to be electrified, a normally open point is closed, and the voltage is cut to the meter B in the transformer area B;
a current relay connected with the meter a is electrified, and a normally closed point is disconnected; and a current relay connected with the meter B is electrified, a normally open point is closed, and the current cuts the meter B in the transformer area B.
Preferably, the operation process of the first step can be synchronized or followed by the operation steps of:
the second step is that: the load cutting fault simulator controls a voltage relay corresponding to the load cutting fault simulator to be electrified, and a normally closed point is disconnected; meanwhile, the load cutting fault simulator controls a voltage relay corresponding to the load cutting fault simulator to be electrified, a normally open point is closed, and voltage is bridged to a meter a in the transformer area A;
a current relay connected with the meter b is electrified, and a normally closed point is disconnected; and a current relay connected with the meter a is electrified, a normally open point is closed, and the current is cut to the meter a in the transformer area A.
The invention has the beneficial technical effects that: the invention is provided with a main controller and a plurality of areas, each area is provided with a plurality of meters, each meter is correspondingly connected with a load cutting fault simulator, the system can set the common fault types of load cutting in real operation, and the fault can be manually set according to the content to be trained through the load cutting fault point of the main controller, so that students can analyze, search and eliminate the fault.
The invention increases the load cutting training system of the low-voltage distribution transformer area from theoretical training to actual operation training, and enables students to operate and train the whole process from fault state observation, fault data measurement to data information analysis, fault type judgment and fault state recovery. 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.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a load cutting simulation fault training system for low-voltage power centralized meter reading.
Fig. 2-5 are schematic circuit diagrams of parts of a load cutting simulation fault training system for low-voltage power centralized meter reading.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments, but the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1, a load cutting simulation fault training system for low-voltage power centralized meter reading comprises a master controller and a plurality of regions divided according to regions, wherein:
each platform area is provided with a virtual training cabinet, a plurality of virtual meters are arranged in the training cabinet, each meter is allocated with an IP address and a port, and each meter is connected with a master control board through a communication line and a serial server;
each meter is provided with a load cutting fault simulator, the load cutting fault simulator is connected with the master controller through a wireless network, and the load cutting fault simulator is connected with the meters through a relay and used for controlling the meters;
all load cutting fault simulators in one transformer area are connected with a virtual load source (namely a virtual load power supply) through a voltage isolation transformer or a current isolation transformer; the virtual load source is connected with the master controller through the Ethernet and the serial server, and can automatically alarm and cut off the power supply when the virtual load source fails;
the process that the master controller sends a load cutting fault instruction to the gauge a of the transformer area A is as follows:
the master controller finds out the IP address and the port corresponding to the meter a, and then generates: the load cutting fault simulator generates a corresponding fault instruction and sends the fault instruction to a relay connected with the load cutting fault simulator, a normally closed point of the relay is opened, a normally open point of the relay is closed, and the corresponding meter a is cut to a position in the corresponding platform area A, wherein the position requires cutting in the instruction.
The virtual load source is used for converting an input single-phase alternating current signal into a three-phase alternating current signal, and the alternating current signal outputs 0-5A current.
The current "load cut fault" procedure is cancelled as follows:
finding out the IP address and port corresponding to the meter a in the master controller, and then generating: and a load cutting fault command is cancelled and is sent to a load cutting fault simulator corresponding to the meter a through a wireless network, and the load cutting fault simulator generates a corresponding fault cancelling command and controls the meter a to cancel a corresponding fault through a relay.
And the input end and the output end of the load cutting fault simulator are connected with a normally closed point of a relay connected with the load cutting fault simulator.
And all the transformer areas are connected through a closing coil.
The operation process of cutting the meter B of the platform area B to the meter a of the platform area A is as follows:
s1: the master controller sends out: the method comprises the steps that a meter B of a transformer area B is cut to a meter a of the transformer area A in a cross-transformer area mode, and the command is sent to a load cutting fault simulator a and a load cutting fault simulator B which are connected with the meter a and the meter B respectively through a wireless network; the load cutting fault simulator controls a voltage relay corresponding to the load cutting fault simulator to be electrified, and a normally closed point is disconnected; and meanwhile, the load cutting fault simulator controls the voltage relay corresponding to the load cutting fault simulator to be electrified, the normally open point is closed, and the voltage is cut to the meter a bridging the transformer area A.
The operation process of realizing the interchange cutting of the gauge B of the transformer area B and the gauge a of the transformer area A is as follows:
the first step is as follows: s1: the master controller sends out: the method comprises the steps that a meter B of a transformer area B and a meter a of a transformer area A are switched and cut, and are sent to an a load cutting fault simulator and a B load cutting fault simulator which are connected with the meter a and the meter B respectively through a wireless network; the a load cutting fault simulator controls a voltage relay corresponding to the a load cutting fault simulator to be electrified, and a normally closed point is disconnected; meanwhile, the load cutting fault simulator controls a voltage relay corresponding to the load cutting fault simulator to be electrified, a normally open point is closed, and the voltage is cut to the meter B in the transformer area B;
a current relay connected with the meter a is electrified, and a normally closed point is disconnected; and a current relay connected with the meter B is electrified, a normally open point is closed, and the current cuts the meter B in the transformer area B.
The operation process of the first step can be synchronized or follow the operation steps of:
the second step is that: the load cutting fault simulator controls a voltage relay corresponding to the load cutting fault simulator to be electrified, and a normally closed point is disconnected; meanwhile, the load cutting fault simulator controls a voltage relay corresponding to the load cutting fault simulator to be electrified, a normally open point is closed, and voltage is bridged to a meter a in the transformer area A;
a current relay connected with the meter b is electrified, and a normally closed point is disconnected; and a current relay connected with the meter a is electrified, a normally open point is closed, and the current is cut to the meter a in the transformer area A.
After the system is electrified, a power supply passes through the device protector to each load cutting fault simulator, and a single chip microcomputer in the load cutting fault simulator starts to work, and the specific working flow and principle are as follows:
after the system is electrified, the power supply passes through the device protector to each load cutting fault simulator, the single chip microcomputer of the load cutting fault simulator starts to work, and meanwhile, the load cutting fault simulator starts to work. When the load is cut, the main controller sets the type of the load cutting to be carried out and clicks the corresponding type fault point to send a command, the load cutting command passes through the auxiliary contact of the intermediate latching relay to the load cutting closing coil, the closing coil is electrified, and the setting operation of the load cutting fault is completed. When the current load cutting fault is cancelled, the corresponding fault point to be cancelled is clicked to send a command, and the load cutting cancellation command passes through the auxiliary contact of the intermediate latching relay to the cancellation tripping coil. And the opening coil is electrified, and the load cutting fault cancellation operation is completed.
The setting and the cancellation of the other types of load cutting fault points are the same as the above operation, and the main controller controls the action of the relay. Thereby controlling the setting and cancellation of the load cutting fault.
The load cutting training system simulates the working principle of real meters in each platform area, and the relay is controlled by the main controller to act to realize the on-off of circuits, so that different meter loops are switched on, and the meters are switched between different platform areas.
The operation of the system will now be described in detail by referring to fig. 2-5 (the meters in fig. 2-5 are meters):
as shown in fig. 2-5, the main controller allocates different IP addresses to each meter (one meter simulates a power supply branch of a platform area at this time) through the serial server, for example, platform areas 1,1#, 2#, and 3# single-phase meters, the allocated meter address is 192.168.0.11, and the port: 5500. 5600, 5700; platform district 3, 1#, 2#, single-phase strapping table of 3#, distribution table address is 192.168.0.13, port: 6500. 6600, 6700. And each meter and the load cutting fault simulator execute different functional requirements according to a setting command required by load cutting fault setting software through respective allocated addresses and ports.
The input and the output of the load cutting fault simulator are directly connected with a normally closed point of the relay, and the three-phase virtual load power supply starts to supply power after being connected with a power supply starting command of the main controller; the input sides of the voltage isolation mutual inductor and the current isolation mutual inductor are electrified, the input of the load cutting fault simulator connected with the output sides of the voltage isolation mutual inductor and the current isolation mutual inductor is electrified, the gauge meters normally supply power, and the gauge meters start to work.
After the main controller sends out setting commands of cutting the single-phase meters of the areas 3, 1#, 2# and 3# to the single-phase meters of the areas 1,1#, 2# and 3#, the load cutting fault simulator for controlling the meters receives the commands to control the voltage relays L45, L48, L51 and L54 coils of the single-phase meters of the areas 3, 1#, 2# and 3# to be electrified, and a normally closed point is disconnected; meanwhile, the coils of the voltage relays L46, L49, L52 and L55 are electrified, a normally open point is closed, and the voltage is cut to the single-phase meters of the transformer areas 1,1#, 2#, and 3#, as shown in figure 2. The current relays L28, L35 and L42 are electrified, and the normally closed point is disconnected; current relays L29, L36 and L43 are electrified, a normally open point is closed, and current is cut to the single-phase meters of the transformer areas 1,1#, 2#, and 3#, as shown in figure 3. This part of the setup is the command to effect load cut of the lands 3 to the lands 1.
After the main controller sends out the load of the single-phase meters of the areas 3, 1#, 2# and 3# and the load of the single-phase meters of the areas 1,1#, 2# and 3# to be cut and set commands, the load cutting fault simulator of the meters is controlled to receive the commands to control the voltage relays L45, L48, L51 and L54 coils of the single-phase meters of the areas 1,1#, 2# and 3# to be electrified, and a normally closed point is disconnected; meanwhile, the coils of the voltage relays L46, L49, L52 and L55 are electrified, a normally open point is closed, and the voltage is cut to the single-phase meters of the areas 3, 1#, 2# and 3#, as shown in figure 4. The current relays L28, L35 and L42 are electrified, and the normally closed point is disconnected; the current relays L29, L36 and L43 are electrified, the normally open point is closed, and the current is cut to the single-phase meters of the distribution areas 3, 1#, 2#, and 3#, as shown in figure 5. The voltage relays L45, L48, L51 and L54 of the load cutting fault simulator control console 3, 1#, 2#, 3# single-phase meters are electrified, and the normally closed point is disconnected; meanwhile, the coils of the voltage relays L46, L49, L52 and L55 are electrified, a normally open point is closed, and the voltage is cut to the single-phase meters of the transformer areas 1,1#, 2# and 3#, as shown in figure 4. The current relays L28, L35 and L42 are electrified, and the normally closed point is disconnected; the current relays L29, L36 and L43 are electrified, the normally open point is closed, and the current is cut to the single-phase meters of the transformer areas 1,1#, 2#, and 3# as shown in figure 5. This part sets the command to effect the load cutting of the two lands of the load cutting each other.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, which fall within the scope and spirit of the above description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (8)
1. The utility model provides a load cutting simulation fault training system that meter reading is concentrated to low-voltage electric power, its characterized in that, includes master controller and a plurality of platform districts according to regional division, wherein:
each platform area is provided with a virtual training cabinet, a plurality of virtual meters are arranged in the training cabinet, each meter is allocated with an IP address and a port, and each meter is connected with a master controller through a communication line and a serial server;
each meter is provided with a load cutting fault simulator, the load cutting fault simulator is connected with the master controller through a wireless network, and the load cutting fault simulator is connected with the meters through a relay and used for controlling the meters;
all load cutting fault simulators in one transformer area are connected with a virtual load source through a voltage isolation transformer or a current isolation transformer; the virtual load source is connected with the master controller through the Ethernet and the serial server, and can automatically alarm and cut off the power supply when the virtual load source fails;
the process that the master controller sends a load cutting fault instruction to the gauge a of the transformer area A is as follows:
the master controller finds out the IP address and the port corresponding to the meter a, and then generates: the load cutting fault simulator generates a corresponding fault instruction and sends the fault instruction to a relay connected with the load cutting fault simulator, a normally closed point of the relay is opened, a normally open point of the relay is closed, and the corresponding meter a is cut to a position in the corresponding platform area A, wherein the position requires cutting in the instruction.
2. The load cutting simulation fault training system for the low-voltage power centralized meter reading as claimed in claim 1, wherein the virtual load source is used for converting an input single-phase alternating current signal into a three-phase alternating current signal, and the alternating current signal outputs a current of 0-5A.
3. The load cutting simulation fault training system for the low-voltage power centralized meter reading of claim 1, wherein the current process of eliminating the load cutting fault is as follows:
finding out the IP address and port corresponding to the meter a in the master controller, and then generating: and a load cutting fault command is cancelled and is sent to a load cutting fault simulator corresponding to the meter a through a wireless network, and the load cutting fault simulator generates a corresponding fault cancelling command and controls the meter a to cancel a corresponding fault through a relay.
4. The load cutting simulation fault training system for the low-voltage power centralized meter reading as claimed in claim 1, wherein the input and output ends of the load cutting fault simulator are connected with the normally closed point of a relay connected with the load cutting fault simulator.
5. The load cutting simulation fault training system for the low-voltage power centralized meter reading as claimed in claim 1, wherein all the transformer areas are connected through a closing coil.
6. The load cutting simulation fault training system for the low-voltage power centralized meter reading of claim 4, wherein the operation process of cutting the meter B in the transformer area B to the meter a in the transformer area A is as follows:
s1: the master controller sends a command that a meter B of the transformer area B is cut to a meter a of the transformer area A in a cross-transformer area mode, and the command is sent to an a load cutting fault simulator and a B load cutting fault simulator which are connected with the meter a and the meter B respectively through a wireless network; the load cutting fault simulator controls a voltage relay corresponding to the load cutting fault simulator to be electrified, and a normally closed point is disconnected; and meanwhile, the load cutting fault simulator controls the voltage relay corresponding to the load cutting fault simulator to be electrified, the normally open point is closed, and the voltage is cut to the meter a bridging the transformer area A.
7. The load cutting simulation fault training system for the low-voltage power centralized meter reading of claim 4, wherein the operation process for realizing the interchange cutting of the meter B in the transformer area B and the meter a in the transformer area A is as follows:
the first step is as follows: s1: the master controller sends a 'meter B of the transformer area B and a meter a of the transformer area A exchange cutting' instruction and sends the instruction to a load cutting fault simulator a and a load cutting fault simulator B which are respectively connected with the meter a and the meter B through a wireless network; the a load cutting fault simulator controls a voltage relay corresponding to the a load cutting fault simulator to be electrified, and a normally closed point is disconnected; meanwhile, the load cutting fault simulator controls a voltage relay corresponding to the load cutting fault simulator to be electrified, a normally open point is closed, and the voltage is cut to the meter B in the transformer area B;
a current relay connected with the meter a is electrified, and a normally closed point is disconnected; and a current relay connected with the meter B is electrified, a normally open point is closed, and the current cuts the meter B in the transformer area B.
8. The load cutting simulation fault training system for the low-voltage power centralized meter reading as claimed in claim 7, wherein the operation process of the first step can be synchronized or follow the operation steps of:
the second step is that: the load cutting fault simulator controls a voltage relay corresponding to the load cutting fault simulator to be electrified, and a normally closed point is disconnected; meanwhile, the load cutting fault simulator controls a voltage relay corresponding to the load cutting fault simulator to be electrified, a normally open point is closed, and voltage is bridged to a meter a in the transformer area A;
a current relay connected with the meter b is electrified, and a normally closed point is disconnected; and a current relay connected with the meter a is electrified, a normally open point is closed, and the current is cut to the meter a in the transformer area A.
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| "低压配变台区智能用电信息系统综合故障模拟装置的研发";刘洋 等;《SCIENTIST 科学家》;20160808;全文 * |
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