CN216211624U - Real standard system of power transformation and distribution operation and maintenance integration - Google Patents
Real standard system of power transformation and distribution operation and maintenance integration Download PDFInfo
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Abstract
The utility model provides a transformation and distribution power operation and maintenance integrated practical training system, which adopts a simulation virtuality and reality combination technology to construct an integrated practical training platform, fuses and interacts a 35kV intelligent substation virtual simulation system with a 10kV switch cabinet and a load simulation cabinet hardware device, enables practical training equipment parameters to be consistent with switch cabinet parameters in a real substation, meets practical training project implementation requirements of actual field work tasks, and realizes the functions of comprehensive practical training and examination on transformation and distribution power operation and maintenance. The utility model has comprehensiveness, teaching performance, safety and reliability, breaks through the limitation of the traditional single simulation level training and single equipment level training, and can complete the principle and reality integrated teaching task of the power transformation and distribution technology course; the fault-tolerant performance is good, the personal and system safety cannot be influenced by the misoperation of the students, and the system is safe and reliable.
Description
Technical Field
The utility model belongs to the technical field of power transformation and distribution operation and maintenance, and particularly relates to a power transformation and distribution operation and maintenance integrated practical training system.
Background
With the rapid development of intelligent substation engineering implementation, power distribution automation construction, intelligent power utilization technology and the like, a large amount of new equipment, new technology and new technology are applied to an intelligent substation power distribution system. Meanwhile, the mutual fusion and association between the primary system and the secondary system and the mutual association between the information platform and the equipment put forward higher requirements on the technical and skill business quality of operation and maintenance personnel; the high mutual fusion and association between the primary and secondary systems and the information platform and equipment enables the elimination and treatment of the defects and faults of the transformer substation to be more diversified and complicated, and the existing practical training device can only train a single equipment level or a simulation level and cannot meet the requirement of training a high-quality composite operation and maintenance integrated professional talent team.
The existing practical training system is basically single virtual simulation practical training and simulation project practical training or single field equipment practical training, the field work requirements are many, the situations are complex, the fault types have no clear boundary, and the current practical training technical specification requirements are not matched with the actual work field requirements. Meanwhile, operation and maintenance personnel generally do not have the capability of comprehensive troubleshooting. If the field operation and maintenance personnel can not quickly judge the primary and secondary faults, the operation risk of the power grid is increased, the working efficiency of the maintenance personnel is reduced, and the operation cost of the power grid is improved. Therefore, a power transformation, distribution, operation and maintenance integrated training system capable of training operation and maintenance personnel in all directions is urgently needed to train 'general practitioners' for power transformation, distribution, operation and maintenance.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the utility model provides a real standard system of change distribution of electricity fortune dimension maintenance integration for carry out comprehensive real standard and examination to change distribution of electricity fortune dimension maintenance.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a power transformation and distribution operation and maintenance integrated practical training system comprises a teacher station and N student stations which are connected through a network; the teacher station is used for setting and calling single or compound fault working conditions to demonstrate or assess the student stations and control the running states of all the student stations; the student station comprises a simulation transformer substation, a switch cabinet and a simulation load cabinet; the simulation transformer substation adopts a one-key sequential control operation design, is connected with the switch cabinet through a bidirectional information transmission channel, is used for remotely controlling, remotely signaling and remotely measuring the switch cabinet, receives signals of the switch cabinet, calls a database of an upper computer to set a simulation fault, remotely sets a secondary circuit fault of the switch cabinet and reflects the operation and fault states of the switch cabinet; the switch cabinet comprises a primary loop module, a secondary loop module, a measurement and control device, a middle handcart and a secondary side fault setting unit; the primary circuit module comprises a cable incoming line, a handcart type breaker QF and a three-phase current transformer which are sequentially connected in series, and further comprises a charged display line, a cable outgoing line, a lightning protection line and a ground switch line QSE which are connected in parallel, wherein the parallel circuit is connected in series at the line outgoing end of the three-phase current transformer; the three-phase current transformer comprises a measuring loop 1Lha, b and c and a protection loop 2Lha, b and c; the cable outlet line comprises a zero sequence current transformer LH 0; the secondary loop module comprises a voltage and current measuring loop, a protection loop, a control loop, an open signal acquisition loop, an operation and control loop and a display loop; the voltage and current measuring circuit is connected with the measuring circuit 1Lha, b and c and the protection circuit 2Lha, b and c and is used for collecting the secondary side current of the three-phase current transformer; the protection loop is used for setting a protection setting value, calculating the setting value and sending a control signal; the control loop is used for receiving the control signal and generating action; the open signal acquisition loop is used for acquiring signals including an energy storage state, a handcart position, a pressing plate position and a breaker opening and closing state and sending the signals to the simulation transformer substation; the control loop is used for high-voltage live locking and temperature and humidity control; the display loop is used for displaying information including a primary loop simulation diagram, a breaker state, a grounding disconnecting link state and a spring energy storage state; the measurement and control device is connected with the simulation transformer substation and used for sending the real-time arranged data and the equipment state to the simulation transformer substation for displaying and receiving instructions including remote operation and fault setting sent by the simulation transformer substation; the measurement and control device also sets a setting value through a human-computer interaction interface and selects protection actions including three sections of overcurrent protection, two sections of zero-sequence overcurrent protection capable of being locked in a direction, three-phase primary reclosing and overload protection; the secondary side fault setting unit is connected with a special fault setting circuit in each loop of the secondary loop module through a contact, a normally closed contact is arranged at an open circuit fault, and a normally open contact is arranged at a short circuit fault; the secondary side fault setting unit carries out local setting or fault cancellation through the measurement and control device, carries out remote setting or fault cancellation through the simulation transformer substation, and is used when a local operation mode and a remote operation mode are different so as to avoid misoperation; the simulation load cabinet comprises a simulation load consisting of a resistance element, a motor load and a control element, and a human-computer interaction module; the simulation load cabinet is connected with the switch cabinet and used for setting various types of secondary faults including a switch cabinet control loop and an energy storage loop for the switch cabinet and the simulation load through the man-machine interaction module, simulating actual load change of a line and line faults including two-phase short circuit and three-phase short circuit.
According to the scheme, the switch cabinet further comprises an operation display device and an electric instrument, wherein the operation display device comprises an indicator lamp, and the electric instrument comprises a display panel; the measurement and control device comprises a communication module, an alternating current input module, an output module and an operation loop module; the communication module is connected with the simulation transformer substation through the communication port and the debugging port; the secondary loop module is realized through a measurement and control device, a control display device and an electric power instrument.
According to the scheme, the switch cabinet also comprises a cabinet body; the upper part of the cabinet body is an incoming line metering part, the lower part of the cabinet body is an outgoing line part, door plates with locks are respectively installed in front of and behind the cabinet body, and the left side plate and the right side plate of the cabinet body are respectively provided with a detachable side plate; the cabinet body comprises a main bus chamber, an instrument chamber, a breaker chamber and a cable inlet and outlet chamber, and steel plates are arranged among the chambers for isolation; baking varnish is sprayed on the surfaces of important components in the cabinet body to serve as a protective layer.
According to the scheme, the multifunctional electric tool also comprises a tool cabinet, and common operation tools including insulating gloves, insulating boots, safety caps, a step ladder, a tool box, an electroscope and a grounding wire for placing operation and maintenance staff.
The utility model has the beneficial effects that:
1. the utility model discloses a transformation, distribution, operation and maintenance integrated practical training system, which closely combines the operation requirements of modern transformation, distribution, operation and maintenance, adopts a simulation virtuality and reality combination technology to construct an integrated practical training platform by taking a 35kV intelligent substation as an object, fuses and interacts a 35kV intelligent substation virtual simulation system with a 10kV switch cabinet and a load simulation cabinet hardware device, enables the practical training equipment parameters to be consistent with the switch cabinet parameters in a real substation, meets the practical training project implementation requirements of actual field work tasks, and realizes the functions of comprehensive practical training and examination on the transformation, distribution, operation and maintenance.
2. The utility model has the advantages that: the virtual simulation system of the 35kV intelligent substation is fused and interacted with the hardware devices of the 10kV switch cabinet and the load simulation cabinet, the limitation of the traditional single simulation level training and single equipment level training is broken through, a student can comprehensively know the primary system and the secondary system of the power transformation and distribution system, and the system becomes a multifunctional skill training system integrating teaching, learning, practicing and examining.
3. The utility model has the advantages of teaching: the theory and reality integrated teaching task of the power distribution technology course can be completed; the experimental training of multiple strong electric courses of power plant and power system specialties, automation technologies, power supply and utilization technology specialties and the like is completed; carrying out electrician training and skill identification service on related workers in the industry enterprise; carrying out electrician professional skill training and identification tasks; and a course design and graduation platform is provided for the automation of the power system, the power supply and utilization technology and related specialties.
4. The utility model has the following teaching: the cabinet body of the power distribution complete equipment is completely provided with an observation window, so that elements, working states and most main wiring of the equipment are observed on the premise of ensuring the safety of students; the secondary fault of the equipment is provided with two modes of simulating the on-site setting of the electronic screen of the front cabinet door of the load cabinet and the remote setting of the simulation platform, so that various requirements of on-site demonstration teaching, remote setting examination and the like are met.
5. The utility model has the advantages of safe reliability: the loading system has various protection functions, good fault tolerance performance, no influence on personal and system safety due to misoperation of students and safe and reliable system.
Drawings
Fig. 1 is a network wiring diagram of an embodiment of the present invention.
Fig. 2 is a main wiring diagram of a 35kV simulation intelligent substation according to an embodiment of the present invention.
Fig. 3 is a primary loop wiring diagram of an embodiment of the present invention.
Fig. 4 is a wiring diagram of a protection control loop and an open signal acquisition loop of a secondary loop according to an embodiment of the present invention.
Fig. 5 is a wiring diagram of a voltage current measurement loop of the secondary loop of the embodiment of the present invention.
Fig. 6 is a tank circuit wiring diagram of the secondary circuit of the embodiment of the present invention.
In the figure: 1. a cable incoming line; 2. a live display line; 3. a cable outlet; 4. a lightning protection circuit; 5. a ground knife circuit.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1, the embodiment of the utility model includes an artificial intelligent substation, a 10kV switch cabinet, a simulation load cabinet, and a tool cabinet; the 10kV switch cabinet is connected with the analog load cabinet, and the secondary side fault setting unit is installed in the 10kV switch cabinet.
1. Simulation intelligent substation
The comprehensive substation simulation platform takes a 35kV comprehensive substation of a certain power supply company as an object, is simulated by combining with the standardized design of the 35kV substation, and comprises a substation monitoring system, a primary equipment area, a high-voltage switch distribution room, a protection room, a tool room, a trainer platform, a learning park auxiliary training and other parts. The equipment, operation mode, operation, accident handling and the like of the simulation object are consistent with the transformer substation.
The simulation training system provides a set of comprehensive and full-range multifunctional training platform for power transformation and distribution operation personnel, has a perfect training management function, and can show the states of field equipment in normal, abnormal and emergency states of a 35kV transformer substation. Through the practical training of the platform skills, students can master the skills of normal inspection and switching operation of 35kV power transformation and distribution operation and handling abnormal and emergency accidents.
The simulation platform is connected with and reads data of the microcomputer comprehensive protection device, the touch screen, the serial port relay and the PLC (programmable logic controller) through an RS485 bus Modbus RTU communication protocol. The simulation platform transmits instructions such as fault setting and the like to the PLC through the RS485 bus, can realize remote signaling, remote measurement and remote control of the power transformation and distribution system, quickly and accurately obtains real-time information of the operation of the power transformation and distribution system, completely grasps the real-time operation state of the power transformation and distribution system, finds the operation fault of the power transformation and distribution station in time and makes corresponding decision and processing. The touch screen is mainly used for fault answering set for the serial relay, and interaction with simulation software is achieved through data interaction with the PLC. The operation and maintenance switch cabinet is connected with the load cabinet through connectors, and the movement and the assembly are convenient. The control switches in the operation and maintenance switch cabinet are provided with a group of auxiliary contacts, so that simulation software can read corresponding states in real time.
The simulation platform is provided with a trainer station and a student station, the trainer station can set and call single or composite fault working conditions for demonstration or examination, and the trainer station can control the running states, fault setting and the like of all the student stations. A bidirectional information transmission channel is arranged between the simulation platform and the equipment, and the teaching station is connected with the student station through the Ethernet.
As shown in fig. 2, the master station wiring diagram contains both analog lines and actual equipment lines, and the simulation platform can receive signals from the switch cabinet. The database can be called to set simulation faults, and the faults of the secondary circuit of the switch cabinet can also be set remotely in a remote mode.
2.10kV switch cabinet
The 10kV switch cabinet comprises a cabinet body, a middle handcart, a protection and instrument room and the like.
The 10kV switch cabinet and the analog load are important components of the power transformation and distribution operation and maintenance integrated training system, the whole system is formed by software and hardware equipment, the 35kV simulation transformer substation can remotely control, remotely communicate and remotely measure the 10kV switch cabinet, and the operation and fault of the switch cabinet influence the operation state of the simulation transformer substation.
The middle-placed switch cabinet adopts a standardized design, the upper part is an incoming line metering part, and the lower part is an outgoing line. Adopt cabinet type structure, the cabinet body installs the door plant of taking the lock around the cabinet body, and the curb plate is all in order to conveniently pull down about, and the cabinet body design is according to main bus-bar room, instrument room, circuit breaker room, cable business turn over line room, has the steel sheet to keep apart between each room to guarantee safety in utilization. The surface of the important component is used as a protective layer by baking finish so as to meet the requirements of observation, installation and debugging of a practical training person.
The microcomputer integrated protection device is arranged on an instrument door of the switch cabinet and comprises a central processing communication plug-in, an alternating current input plug-in, an output plug-in and an operation loop plug-in. The central processing and communication plug-in is responsible for carrying out bidirectional transmission of signals with the background simulation platform through the communication port and the debugging port, and the simulation platform can not only obtain the real working state and data of the switch cabinet, but also carry out remote control on the practical training system through the central processing plug-in.
Fig. 3 is a wiring diagram of a primary circuit of the equipment of the present invention, which includes a cable incoming line 1, a handcart type breaker QF, a three-phase current transformer (secondary side connection measurement circuit 1Lha, b, c, protection circuit 2Lha, b, c), a live display line 2, a cable outgoing line 3 (including a zero sequence current transformer LH0), a lightning protection line 4, and a ground switch line 5. The primary sides of the analog loads are arranged in the 10kV switch cabinet, and the analog loads are realized by the analog load cabinet.
Fig. 4 is a wiring diagram of a secondary circuit of the device of the present invention, which includes a voltage and current measuring circuit, a protection circuit, a control circuit, an open signal collecting circuit, an intelligent control circuit, and a display circuit. These functions can be realized by microcomputer integrated circuit protection measuring and controlling device, intelligent control display device and electric power instrument.
The voltage and current measuring circuit collects the secondary side current of the current transformer, and the measuring result is displayed by the power instrument.
The protection loop is responsible for setting a protection setting value, calculating the setting value and sending out a control signal, and the control loop receives the signal to generate action. The setting value is arranged on a man-machine interaction interface of the microcomputer integrated circuit protection measurement and control device to realize, and three-section overcurrent protection, two-section zero-sequence overcurrent protection capable of being locked in a direction, three-phase one-time reclosing, overload protection and the like can be selected. The protection action is realized by processing multi-party information by a processor of the microcomputer integrated circuit protection measurement and control device to form a control loop.
The input signal acquisition loop transmits acquired signals (an energy storage state, a handcart position, a pressing plate position, a breaker opening and closing state and the like) to the relay protection device/simulation system through optical fibers.
The intelligent control display loop can realize the functions of primary loop simulation diagram display, breaker state display, grounding disconnecting link state display, spring energy storage state display, high-voltage live locking and temperature and humidity control.
The equipment secondary fault setting unit is arranged in a 10kV middle-placed switch cabinet and can be set in a local mode and a remote mode. The fault is set to be in a soft fault mode, the traditional practical training equipment line is mainly subjected to artificial short circuit and disconnection, and damage to the practical training equipment is caused to different degrees. The utility model accesses the exclusive fault setting circuit through the contact in the original route, sets the normally closed contact at the open circuit fault, sets the normally open contact at the short circuit fault, does not need to manually destroy the conducting wire or pull and plug the connecting terminal, and the fault can be set and cancelled through the cabinet door touch screen or the simulation system at any time, thereby having certain flexibility.
3. Analog load cabinet
An analogue load cabinet (containing a TV unit) was used to simulate a 10kV load, including resistive elements, motor load and control elements. The method can simulate the actual load change and line faults (such as two-phase and three-phase short-circuit faults of a 10kV line). In addition, various types of faults can be set for the 10kV switch cabinet and the load through simulating an electronic screen on the load cabinet, and the faults comprise more than 80 secondary faults such as a switch cabinet control loop, an energy storage loop and the like.
4. Tool cabinet
The tool cabinet is used for placing operation tools such as insulating gloves, insulating boots, safety caps, step ladders, tool boxes, electroscopes, grounding wires and the like which are commonly used by operation and maintenance staff.
The functions realized by the utility model comprise:
(1) equipment patrol
Comprehensively inspecting primary equipment and determining defects;
inspecting defects of secondary equipment and a station system;
(2) device maintenance
Maintaining a switch cabinet, including a switch cabinet heater, energy storage current idle opening, control current idle opening and TV fuse replacement operation instruction card filling;
the safety tool maintenance comprises a safety protection tool maintenance operation guide card, a safety tool and instrument maintenance operation guide card filling;
(3) switching operation
The method comprises the steps that the power distribution circuit and the circuit breaker stop and send operations comprise filling 35kV circuit breakers, 10kV circuit breakers and circuit stop and send operation tickets;
bus power-on and power-off operation, including filling in power-on and power-off operation tickets of 35kV buses and 10kV buses;
the main transformer power cut and transmission operation comprises filling a power cut operation ticket of the 35kV main transformer;
the power-on and power-off operation of the station alternating current and direct current system comprises the filling of power-off operation tickets of a station transformer, a direct current charger and a storage battery;
(4) fault handling
The method comprises the following steps of (1) fault processing of a circuit breaker and a line, wherein the fault processing comprises instantaneous or permanent fault processing of a 35kV line, a 10kV line and a line when the circuit breaker fails to operate;
bus fault processing, including 35kV and 10kV bus fault processing and bus fault processing when a breaker fails to operate;
the main transformer abnormity and fault processing comprises oil temperature, oil level and light gas abnormity processing, main transformer body, sleeve and lead fault processing, and main transformer fault processing when the circuit breaker fails;
the transformer abnormity and fault processing comprises voltage transformer secondary voltage abnormity processing and loop disconnection processing;
the station alternating current and direct current system abnormity and fault processing comprises a station transformer, a station bus, a direct current ground, a charging device alternating current power supply and direct current bus voltage fault searching and processing;
(5) the troubleshooting of the switch cabinet comprises the following steps:
troubleshooting a circuit breaker control loop;
opening a circuit breaker and troubleshooting;
troubleshooting an energy storage loop of the circuit breaker;
troubleshooting an alternating current signal loop of the switch cabinet;
troubleshooting the intelligent control device;
troubleshooting a lighting and temperature control device in the cabinet;
troubleshooting an electromagnetic lock and an electrified display;
mechanical troubleshooting of the circuit breaker;
the switch cabinet overhaul comprises the replacement of a low-voltage circuit breaker, an opening/closing indicator lamp, an opening/closing coil, an opening/closing spring, a live display device, an electromagnetic lock, an energy storage motor, a circuit breaker control switch, a circuit breaker auxiliary contact and a travel switch;
(6) test of switch cabinet
Measuring direct current resistance, including measuring direct current resistance of a main loop resistance and a switching-off/switching-on coil;
measuring insulation resistance, namely measuring insulation resistance of a switch cabinet body, insulation resistance of an auxiliary loop and a control loop, insulation resistance of a current transformer and insulation resistance of a lightning arrester;
the circuit breaker mechanical characteristic test comprises a circuit breaker mechanical characteristic test and a low-voltage action test;
(7) relay protection and measurement and control device inspection
The alternating current-direct current loop inspection comprises analog quantity loop inspection, switching value loop inspection and electric shock and output signal inspection;
current protection verification, including overcurrent protection test and reclosing test;
setting a current protection and reclosing device, including setting the current protection and setting the reclosing device;
(8) intelligent design (one key sequential control operation design of transformer substation)
One-key sequential control design for switching operation of line, bus and main transformer
According to the utility model, the running states of the equipment and the power grid can be displayed on site through the equipment indicator lamp, and data interaction transmission can be realized through communication of the optical coupler, so that the functions of measurement, control and the like of primary equipment are realized, and the local and remote operation modes can not be used simultaneously, so that potential safety hazards caused by misoperation can be effectively avoided. The practical training system not only maintains the line simulation function of the power transformation and distribution network of the traditional simulation platform, but also can connect the actual lines represented by the switch cabinet and the simulation load cabinet of the centrally installed switchgear into the virtual line, so that the operation environment and the operation steps of operation and maintenance personnel are restored to the maximum extent, and the training achieves the best effect.
The fault in the utility model is set to be in a soft fault mode, and the fault can be flexibly set or cancelled through a local touch screen or a remote simulation system without causing irreversible damage to equipment. Meanwhile, the mode of combining the 'soft fault' mode with software and hardware increases the settable fault types, so that the training content is more comprehensive, and the learners can know and judge the faults more clearly.
The utility model takes the transformer substation as a unit, emphasizes comprehensive, continuous and individual care of the transformer substation, and emphasizes early abnormality detection and defect handling. The practical training system integrates simulation, troubleshooting and electrical tests, and can cultivate novel operators conforming to modern intelligent substations. The training system transfers the early stage of fault qualification to on-site operation and maintenance personnel, so that the operation and maintenance personnel can master the primary and secondary side basic fault judgment capability, become a general practitioner for power transformation and distribution operation and maintenance, reduce the working pressure of the on-site maintenance personnel, greatly reduce the use frequency of limited production resources such as production vehicles and skilled personnel, effectively reduce the production cost and improve the working efficiency. Meanwhile, when the defects of the primary and secondary equipment are found, the reasons are found in time according to the defect phenomenon of the equipment and are processed and eliminated, the safety risk in the running process of the equipment is reduced, and the misoperation caused by the fault judgment of the secondary side fault is reduced.
The utility model can cultivate a high-quality composite operation and maintenance integrated professional talent team, realize one-post multiple functions of traditional power transformation operation and maintenance personnel, improve the self-handling capacity of abnormal conditions of equipment defects, improve the response speed of defect elimination and emergency repair of accidents, and make contribution to ensuring safe and reliable power supply of a power grid.
Example 1
The integrated practical training system can realize the interaction of a simulation substation system and an entity switch cabinet, and take switching operation as an example. A teacher can issue switching operation tasks to all student machines through a teacher station, the students can complete simulation operation and five-prevention judgment through a five-prevention operation system-graphic invoicing function in a simulation substation system after receiving the operation tasks and making operation preparation, after the invoicing is finished, the students can click to start unlocking operation to enter a simulation substation comprehensive system, remote control operation is conducted on a circuit breaker, remote control signals are transmitted to an entity switch cabinet through a communication line, and the circuit breaker acts accordingly. The handcart, the grounding switch and the like can be correspondingly operated on the solid switch cabinet by switching the mode switch on the switch cabinet from a remote mode to a local mode.
The traditional practical training system can only realize simulation demonstration on a simulation platform or can only realize on-site switching-off and switching-on a switch cabinet, and the switching operation practical training system based on a real operation mode can enable a student to master all the processes of actual switching-off operation of a transformer substation, and particularly can realize remote control switching-off and switching-on.
Example 2
The embodiment 2 of the utility model provides a switch cabinet troubleshooting training system.
The teacher sets up multiple complex fault type in advance at the teacher station, sets up cubical switchboard trouble through the teacher station long-range, or directly sets up through cabinet door touch-sensitive screen. And the fault setting unit sets short-circuit and open-circuit faults on the secondary side line according to the selected fault type, and waits for the examination of students.
The students check mechanical faults and electrical faults of the switch cabinet one by one according to the maintenance safety requirements and the general maintenance steps, find abnormal conditions, judge two fault types of short circuit or open circuit according to a secondary wiring diagram of the centrally installed switchgear, find fault points and locate the defects. After the student finishes searching, the fault setting is cancelled on the simulation platform or the touch screen, and the equipment is immediately recovered to be normal.
The above embodiments are only used for illustrating the design idea and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and implement the present invention accordingly, and the protection scope of the present invention is not limited to the above embodiments. Therefore, all equivalent changes and modifications made in accordance with the principles and concepts disclosed herein are intended to be included within the scope of the present invention.
Claims (4)
1. The utility model provides a real standard system of transformation and distribution fortune dimension maintenance integration which characterized in that:
the system comprises an instructor station and N student stations which are connected through a network; the teacher station is used for setting and calling single or compound fault working conditions to demonstrate or assess the student stations and control the running states of all the student stations; the student station comprises a simulation transformer substation, a switch cabinet and a simulation load cabinet;
the simulation transformer substation adopts a one-key sequential control operation design, is connected with the switch cabinet through a bidirectional information transmission channel, is used for remotely controlling, remotely signaling and remotely measuring the switch cabinet, receives signals of the switch cabinet, calls a database of an upper computer to set a simulation fault, remotely sets a secondary circuit fault of the switch cabinet and reflects the operation and fault states of the switch cabinet;
the switch cabinet comprises a primary loop module, a secondary loop module, a measurement and control device, a middle handcart and a secondary side fault setting unit;
the primary circuit module comprises a cable incoming line, a handcart type breaker QF and a three-phase current transformer which are sequentially connected in series, and further comprises a charged display line, a cable outgoing line, a lightning protection line and a ground switch line QSE which are connected in parallel, wherein the parallel circuit is connected in series at the line outgoing end of the three-phase current transformer; the three-phase current transformer comprises a measuring loop 1Lha, b and c and a protection loop 2Lha, b and c; the cable outlet line comprises a zero sequence current transformer LH 0;
the secondary loop module comprises a voltage and current measuring loop, a protection loop, a control loop, an open signal acquisition loop, an operation and control loop and a display loop;
the voltage and current measuring circuit is connected with the measuring circuit 1Lha, b and c and the protection circuit 2Lha, b and c and is used for collecting the secondary side current of the three-phase current transformer;
the protection loop is used for setting a protection setting value, calculating the setting value and sending a control signal;
the control loop is used for receiving the control signal and generating action;
the open signal acquisition loop is used for acquiring signals including an energy storage state, a handcart position, a pressing plate position and a breaker opening and closing state and sending the signals to the simulation transformer substation;
the control loop is used for high-voltage live locking and temperature and humidity control;
the display loop is used for displaying information including a primary loop simulation diagram, a breaker state, a grounding disconnecting link state and a spring energy storage state;
the measurement and control device is connected with the simulation transformer substation and used for sending the real-time arranged data and the equipment state to the simulation transformer substation for displaying and receiving instructions including remote operation and fault setting sent by the simulation transformer substation; the measurement and control device also sets a setting value through a human-computer interaction interface and selects protection actions including three sections of overcurrent protection, two sections of zero-sequence overcurrent protection capable of being locked in a direction, three-phase primary reclosing and overload protection;
the secondary side fault setting unit is connected with a special fault setting circuit in each loop of the secondary loop module through a contact, a normally closed contact is arranged at an open circuit fault, and a normally open contact is arranged at a short circuit fault; the secondary side fault setting unit carries out local setting or fault cancellation through the measurement and control device, carries out remote setting or fault cancellation through the simulation transformer substation, and is used when a local operation mode and a remote operation mode are different so as to avoid misoperation;
the simulation load cabinet comprises a simulation load consisting of a resistance element, a motor load and a control element, and a human-computer interaction module; the simulation load cabinet is connected with the switch cabinet and used for setting various types of secondary faults including a switch cabinet control loop and an energy storage loop for the switch cabinet and the simulation load through the man-machine interaction module, simulating actual load change of a line and line faults including two-phase short circuit and three-phase short circuit.
2. The power distribution operation and maintenance integrated practical training system according to claim 1, characterized in that: the switch cabinet also comprises an operation display device and an electric power instrument, wherein the operation display device comprises an indicator lamp, and the electric power instrument comprises a display panel; the measurement and control device comprises a communication module, an alternating current input module, an output module and an operation loop module; the communication module is connected with the simulation transformer substation through the communication port and the debugging port; the secondary loop module is realized through a measurement and control device, a control display device and an electric power instrument.
3. The power distribution operation and maintenance integrated practical training system according to claim 1, characterized in that: the switch cabinet also comprises a cabinet body; the upper part of the cabinet body is an incoming line metering part, the lower part of the cabinet body is an outgoing line part, door plates with locks are respectively installed in front of and behind the cabinet body, and the left side plate and the right side plate of the cabinet body are respectively provided with a detachable side plate; the cabinet body comprises a main bus chamber, an instrument chamber, a breaker chamber and a cable inlet and outlet chamber, and steel plates are arranged among the chambers for isolation; baking varnish is sprayed on the surfaces of important components in the cabinet body to serve as a protective layer.
4. The power distribution operation and maintenance integrated practical training system according to claim 1, characterized in that: the multifunctional electric tool is characterized by further comprising a tool cabinet, and common operation tools comprising insulating gloves, insulating boots, safety caps, a step ladder, a tool box, an electroscope and a grounding wire and used for placing operation and maintenance staff.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121674579.1U CN216211624U (en) | 2021-07-22 | 2021-07-22 | Real standard system of power transformation and distribution operation and maintenance integration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121674579.1U CN216211624U (en) | 2021-07-22 | 2021-07-22 | Real standard system of power transformation and distribution operation and maintenance integration |
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| Publication Number | Publication Date |
|---|---|
| CN216211624U true CN216211624U (en) | 2022-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121674579.1U Withdrawn - After Issue CN216211624U (en) | 2021-07-22 | 2021-07-22 | Real standard system of power transformation and distribution operation and maintenance integration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113990132A (en) * | 2021-07-22 | 2022-01-28 | 国家电网有限公司 | Power transformation and distribution operation and maintenance integrated practical training system and practical training method |
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2021
- 2021-07-22 CN CN202121674579.1U patent/CN216211624U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113990132A (en) * | 2021-07-22 | 2022-01-28 | 国家电网有限公司 | Power transformation and distribution operation and maintenance integrated practical training system and practical training method |
| CN113990132B (en) * | 2021-07-22 | 2024-04-30 | 国家电网有限公司 | Power transformation and distribution operation and maintenance integrated training system and training method |
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