CN113964944A - Control method and system of transformer substation - Google Patents

Control method and system of transformer substation Download PDF

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Publication number
CN113964944A
CN113964944A CN202111266198.4A CN202111266198A CN113964944A CN 113964944 A CN113964944 A CN 113964944A CN 202111266198 A CN202111266198 A CN 202111266198A CN 113964944 A CN113964944 A CN 113964944A
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China
Prior art keywords
maintenance
master station
station subsystem
switch
substation
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Granted
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CN202111266198.4A
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CN113964944B (en
Inventor
吴帆
欧志卫
黄雨效
朱历生
欧阳龙
江辉鸿
吕桂强
周杨
孙玉彤
陈晓彬
朱颖
胡坤
陈连军
孟正华
王龙委
王若伟
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ZHUHAI ELECTRIC POWER DESIGN INSTITUTE CO LTD
Guangdong Power Grid Co Ltd
Heyuan Power Supply Bureau of Guangdong Power Grid Co Ltd
Original Assignee
ZHUHAI ELECTRIC POWER DESIGN INSTITUTE CO LTD
Guangdong Power Grid Co Ltd
Heyuan Power Supply Bureau of Guangdong Power Grid Co Ltd
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Priority to CN202111266198.4A priority Critical patent/CN113964944B/en
Publication of CN113964944A publication Critical patent/CN113964944A/en
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
    • H02J13/00036—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving switches, relays or circuit breakers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/16—Electric power substations

Abstract

The embodiment of the invention discloses a control method and a control system of a transformer substation, wherein the control method is executed by an interval control terminal in a control system of the transformer substation, and the control system comprises the following steps: the system comprises a scheduling master station subsystem, an operation and maintenance master station subsystem and a control device in a transformer substation, wherein the control device comprises an operation and maintenance host, operation and maintenance equipment and an interval control terminal; the scheduling master station subsystem is in communication connection with the operation and maintenance master station subsystem, the operation and maintenance master station subsystem and the operation and maintenance equipment are in communication connection with the operation and maintenance host, and the scheduling master station subsystem is in communication connection with the interval control terminal; the control method comprises the following steps: receiving an operation instruction sent by a scheduling master station subsystem; acquiring switch information of each switch in the transformer substation according to the operation instruction; and determining an operation execution result according to the switching information, and transmitting the switching information and the operation execution result to the dispatching master station subsystem. The control method and the control system for the transformer substation provided by the embodiment of the invention improve the reliability of transformer substation control.

Description

Control method and system of transformer substation
Technical Field
The embodiment of the invention relates to a power grid control technology, in particular to a control method and a control system for a transformer substation.
Background
With the continuous development of power grid technology, modern transformer substations gradually move towards informatization, networking and automation, and are continuously combined with computer technology, network technology, communication technology and AI auxiliary judgment technology, so that the intelligent level of the transformer substations is continuously improved, and the intelligent operation and intelligent patrol confirmation work of the transformer substations have intelligent comprehensive construction technical conditions. Meanwhile, the intelligent operation of the transformer substation also ensures that the transformer substation is accurately and reliably controlled and operated.
At present, in the existing control method of the transformer substation, a plurality of patrol devices are generally required to be arranged in the transformer substation, so that the working efficiency is influenced, a control terminal in the transformer substation cannot directly perform terminal control, a superior judgment result is required to be received, the influence caused by tampering of external virus information is possibly caused, and the information reliability is low; and the reliability of the control of the transformer substation is influenced because the local judgment and the local feedback cannot be realized.
Disclosure of Invention
The embodiment of the invention provides a control method and a control system of a transformer substation, which are used for improving the reliability of transformer substation control.
In a first aspect, an embodiment of the present invention provides a control method for a substation, where the control method is executed by an interval control terminal in a control system of the substation, and the control system includes: the system comprises a scheduling master station subsystem, an operation and maintenance master station subsystem and a control device in a transformer substation, wherein the control device comprises an operation and maintenance host, operation and maintenance equipment and an interval control terminal; the scheduling master station subsystem is in communication connection with the operation and maintenance master station subsystem, the operation and maintenance master station subsystem and the operation and maintenance equipment are in communication connection with the operation and maintenance host, and the scheduling master station subsystem is in communication connection with the interval control terminal; the operation and maintenance equipment is used for sending a locking signal to the interval control terminal through the contact;
the control method comprises the following steps:
receiving an operation instruction sent by a dispatching master station subsystem, wherein the operation instruction comprises a switch state confirmation instruction;
acquiring switch information of each switch in the transformer substation according to the operation instruction;
determining an operation execution result according to the switching information, and transmitting the switching information and the operation execution result to the dispatching master station subsystem; and the operation execution result comprises the switch state of each switch in the substation.
Optionally, the control system further includes a telecontrol host, and the telecontrol host is in communication connection with the scheduling master station subsystem and the interval control terminal; and the scheduling main station subsystem is used for sending the operation instruction to the interval control terminal through the telecontrol host.
Optionally, the switch information includes a contact signal and an operation angle;
determining an operation execution result according to the switch information, including:
determining the time difference of the contact signals and the angle range of the operation angle according to the contact signals and the operation angle of the switch;
and if the time difference exceeds the preset setting time range and the operation angle exceeds the preset setting angle range, determining that the on-off of the contact of the switch is abnormal and the opening and closing operation is abnormal.
Optionally, the scheduling master station subsystem is further configured to determine whether an operation execution result is correct according to the received switch information; and if the operation execution result is determined to be incorrect, correcting the operation execution result.
Optionally, the scheduling master station subsystem is further configured to transmit the operation instruction to the operation and maintenance master station subsystem, the operation and maintenance master station subsystem is configured to transmit the operation instruction to the operation and maintenance device through the operation and maintenance host, the operation and maintenance device is configured to execute operation and maintenance work according to the operation instruction, generate a locking signal when it is determined that the switch is abnormally operated, and send the locking signal to the interval control terminal through the contact; the operation and maintenance work comprises a patrol task of a switch in the transformer substation.
Optionally, after the transmitting the switch information and the operation execution result to the scheduling master station subsystem, the method includes:
and receiving the blocking signal transmitted by the operation and maintenance equipment, and transmitting the blocking signal to the dispatching master station subsystem.
In a second aspect, an embodiment of the present invention further provides a control system for a substation, including: the system comprises a scheduling master station subsystem, an operation and maintenance master station subsystem and a control device in a transformer substation, wherein the control device comprises an operation and maintenance host, operation and maintenance equipment and an interval control terminal; the scheduling master station subsystem is in communication connection with the operation and maintenance master station subsystem, the operation and maintenance master station subsystem and the operation and maintenance equipment are in communication connection with the operation and maintenance host, and the scheduling master station subsystem is in communication connection with the interval control terminal; the operation and maintenance equipment sends a locking signal to the interval control terminal through the contact;
the interval control terminal is used for receiving an operation instruction sent by the dispatching master station subsystem, and the operation instruction comprises a switch state confirmation instruction; acquiring switch information of each switch in the transformer substation according to the operation instruction; determining an operation execution result according to the switch information, wherein the operation execution result comprises the switch state of each switch in the transformer substation; and transmitting the switching information and the operation execution result to the dispatching master station subsystem, and sending corresponding prompt information.
Optionally, the scheduling master station subsystem is further configured to transmit the operation instruction to the operation and maintenance master station subsystem, the operation and maintenance master station subsystem is configured to transmit the operation instruction to the operation and maintenance device through the operation and maintenance host, and the operation and maintenance device is configured to execute operation and maintenance work according to the operation instruction and generate a locking signal when it is determined that the switch is abnormally operated; the operation and maintenance work comprises a patrol task of a switch in the transformer substation.
Optionally, the operation and maintenance device is further configured to transmit the blocking signal to the scheduling master station subsystem through the operation and maintenance host and the operation and maintenance master station subsystem.
Optionally, the interval control terminal is further configured to receive a blocking signal transmitted by the operation and maintenance device, and transmit the blocking signal to the scheduling master station subsystem.
The control method and the control system of the transformer substation provided by the embodiment of the invention are implemented by an interval control terminal in a control system of the transformer substation, and the control system comprises the following steps: the system comprises a scheduling master station subsystem, an operation and maintenance master station subsystem and a control device in a transformer substation, wherein the control device comprises an operation and maintenance host, operation and maintenance equipment and an interval control terminal; the scheduling master station subsystem is in communication connection with the operation and maintenance master station subsystem, the operation and maintenance master station subsystem and the operation and maintenance equipment are in communication connection with the operation and maintenance host, and the scheduling master station subsystem is in communication connection with the interval control terminal; the operation and maintenance equipment is used for sending a locking signal to the interval control terminal through the contact; receiving an operation instruction sent by a scheduling master station subsystem, wherein the operation instruction comprises a switch state confirmation instruction; acquiring switch information of each switch in the transformer substation according to the operation instruction; determining an operation execution result according to the switching information, and transmitting the switching information and the operation execution result to the dispatching master station subsystem; and the operation execution result comprises the switch state of each switch in the substation. According to the control method and the control system for the transformer substation, provided by the embodiment of the invention, the operation execution result can be determined through the interval control terminal of the control system, and can be judged and fed back on site, the system and the communication are not depended on, the influence of virus information can be effectively avoided, locking operation can be carried out even if information security holes occur, the phenomenon of misoperation is prevented, and the reliability of transformer substation control is improved.
Drawings
Fig. 1 is a schematic structural diagram of a control system of a conventional substation;
fig. 2 is a flowchart of a control method of a substation according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a control system of a substation according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a control system of another substation according to an embodiment of the present invention;
fig. 5 is a flowchart of a control method for a substation according to a second embodiment of the present invention;
fig. 6 is a schematic diagram illustrating an isolating switch operated from a closed position to an open position according to a second embodiment of the present invention;
fig. 7 is a schematic diagram illustrating an operation of an isolating switch from open position to closed position according to a second embodiment of the present invention;
fig. 8 is a schematic diagram illustrating a grounding switch operating from open position to closed position according to a second embodiment of the present invention;
fig. 9 is a schematic diagram illustrating a grounding switch operating from a closed position to an open position according to a second embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is a schematic structural diagram of a control system of an existing substation, and referring to fig. 1, an existing intelligent operating system of the substation, that is, the control system, has a complex structure, and local information cannot be directly used due to signal security, and can be fed back to an intelligent operation starting point after being subjected to uniform information security processing. On one hand, only the intelligent operation starting point can receive comprehensive feedback information, and only the intelligent operation starting point can comprehensively judge and confirm according to the final result of each safety partition, so that higher requirements are provided for the synchronization of the multi-channel feedback information; on the other hand, the multi-channel information occupies an independent information route, so that the resource waste is serious, the investment is high, the information is influenced by the outside, the key nodes are more, the reliability is low, and the workload of operation maintenance, integral debugging and verification is increased. Therefore, the existing intelligent operation and cooperation patrol confirming system is unreasonable in overall design and cannot meet the requirements of high reliability of intelligent operation and maintenance and people reduction and efficiency improvement of the power system. Because the matched patrol confirming system operated intelligently needs to execute patrol commands and collect patrol result information through a safety III area and a safety IV area of the transformer substation, even if safety isolation and protection control are carried out, the patrol confirming system can be attacked safely, and the collected patrol result information is wrong.
With the continuous development of power grids, a large amount of practical work is carried out on the construction of intelligent substations, some positive effects are obtained, and the foundation of digital transformation is laid. With the deep advance of the construction of the digital power grid, the construction of the digital substation has the following challenges: firstly, the equipment in the transformer substation still has a large space for digital and intelligent upgrading, the research of related intelligent equipment is still in a starting stage, the intelligent equipment is in a scattered application stage and is incomplete in coverage and not wide in application range, and especially, the intelligent identification and intelligent confirmation of the position state of the equipment in the transformer substation at one time lack effective judgment means, so that the construction and development of intelligent operation and matched intelligent patrol confirmation are seriously influenced; secondly, an overall propulsion mechanism is lacked, cross-professional cooperation is difficult, integration is insufficient, structural fusion of primary and secondary equipment is insufficient, and the combined application of data in the safe II area, the safe II area and the safe III area is limited by cross-area interaction, so that the intelligent judgment method breaks through the insufficiency; and thirdly, the intelligent confirmation data combined application level of the primary equipment position state of the transformer substation needs to be improved, the intelligent application of most of the current test points stays at the single monitoring and single perception data judgment level, the data does not realize the deep mining and deep application of the full production elements, and the data fusion and data insight degree is not high. And fourthly, an intelligent data confirmation standard system, a data construction standard and a data application standard of the position state of the primary equipment of the transformer substation are lacked. The problems are all the problems to be solved by intelligently identifying and confirming the position state of the equipment of the transformer substation once.
At present, the correctness judgment of the inspection and operation results of the circuit breaker, the disconnecting switch or the grounding switch at home and abroad mainly adopts a non-homologous double confirmation mode, namely a confirmation mode 1: independently judging the state of the auxiliary contact in the safety I area; confirmation method 2: and (3) independently judging the state of a micro-motion joint (a position proximity sensor) or an angle measurement result or independently judging video image analysis (wherein the equipment in wireless transmission is arranged in a safety IV zone) in the safety III zone, and then determining the state of the equipment after one-time operation (the application range of the video image analysis result is more common) by judging whether the two conditions of the auxiliary joint state judgment result and the video image analysis result or the micro-motion joint state judgment result or the angle measurement judgment result are met. The independent judgment of the safety III area is a means for replacing manual on-site inspection, and is a personification method, namely after each operation, the manual inspection is judged to be correct or not abnormal, the next operation is carried out after reporting, and if the abnormality exists, the next operation is carried out after reporting and on-site processing. Because the safety management requirements of information interaction between the safety I area and the safety III area cannot be directly analyzed and judged in a combined manner on site, the efficiency and the accuracy of intelligent identification and judgment of the position state of the equipment at one time are seriously influenced. At present, the position of primary equipment is reflected through an auxiliary contact of the primary equipment, and whether the operation trend of the primary equipment meets the requirement of the operation direction can only be reflected, but whether the operation is completely in place and whether the contact degree of the primary equipment meets the requirement cannot be determined, so other auxiliary judgments are needed to be matched.
The transformer substation which is not operated intelligently is checked and confirmed on site manually by operators, but other auxiliary judgment means are required to be matched under the intelligent operation environment, such as a video image analysis result, a micro-contact state judgment result, an angle measurement judgment result or a pressure sensor, to assist in judging the in-place condition of primary equipment operation. The existing auxiliary contacts are main shaft independent linkage auxiliary contacts driven by a motor through a mechanical loop, so that the main shaft independent linkage auxiliary contacts reflect the positive and reverse rotation final positions of the motor, and the linkage loop can independently fail, so that an independent first criterion can also fail, and only the 'auxiliary contact position' is adopted as a confirmation mode 1, which needs to be improved. The video image analysis result as the second criterion has low reliability and long intelligent learning time, and more environmental conditions influencing the judgment result often cause the situation of incapability of identification; due to the structural limitation of primary equipment, some equipment cannot provide effective position images for video analysis; the installation position of the micro-motion contact state (position proximity sensor) as the second criterion is not unified, and in order to simply pursue the independent non-homologous confirmation mode 2, the micro-motion contact state (position proximity sensor) is not strictly installed at the last stage of the linkage operation mechanism in the existing equipment, and the reaction position may have the same failure as the auxiliary contact position in the accident. Thus, the second criterion can be invalid similarly, and the reliability of intelligent inspection and judgment is influenced.
Example one
Fig. 2 is a flowchart of a control method for a substation according to an embodiment of the present invention, where the embodiment is applicable to aspects such as controlling the substation, and the method may be executed by an interval control terminal in a control system of the substation, and the control method specifically includes the following steps:
and 110, receiving an operation instruction sent by the dispatching master station subsystem, wherein the operation instruction comprises an on-off state confirmation instruction.
Wherein, the control system includes: the system comprises a scheduling master station subsystem, an operation and maintenance master station subsystem and a control device in a transformer substation, wherein the control device comprises an operation and maintenance host, operation and maintenance equipment and an interval control terminal; the scheduling main station subsystem is in communication connection with the operation and maintenance main station subsystem, the operation and maintenance main station subsystem and the operation and maintenance equipment are in communication connection with the operation and maintenance host, the scheduling main station subsystem is in communication connection with the interval control terminal, and the operation and maintenance equipment is used for sending a locking signal to the interval control terminal through the contact.
Fig. 3 is a schematic structural diagram of a control system of a substation according to a first embodiment of the present invention, and fig. 4 is a schematic structural diagram of a control system of another substation according to a first embodiment of the present invention. The control system shown in fig. 3 is a novel intelligent operation and matched patrol confirmation system of a conventional transformer substation, and the control system shown in fig. 4 is a novel intelligent operation and matched patrol confirmation system of an intelligent transformer substation. Referring to fig. 3 and 4, the control system further illustratively includes a telecontrol host, a security isolation subsystem, the telecontrol host is in communication connection with the scheduling master station subsystem and the interval control terminal, and the security isolation subsystem is in communication connection with the operation and maintenance master station. The telecontrol host, the operation and maintenance equipment and the interval control terminal are all arranged in the transformer substation. The operation and maintenance host comprises a III-area operation and maintenance host, the operation and maintenance equipment comprises I-area operation and maintenance equipment, III-area operation and maintenance equipment and IV-area operation and maintenance equipment, the IV-area operation and maintenance equipment is in communication connection with the safety isolation subsystem, and the I area, the II area, the III area and the IV area in the transformer substation can be areas obtained by division according to safety levels. The dispatching master station subsystem can send the operation instruction to the telecontrol host, and the telecontrol host can forward the operation instruction to the interval control terminal through the interval measurement and control device.
And step 120, acquiring the switch information of each switch in the transformer substation according to the operation instruction.
The interval control terminal can acquire the switch information of the corresponding switch through a sensor connected with each switch in the transformer substation, and the acquired switch information can comprise the on-time, the off-time, the operation angle and the like of the on-signal of each contact.
Step 130, determining an operation execution result according to the switching information, and transmitting the switching information and the operation execution result to the dispatching master station subsystem; and the operation execution result comprises the switch state of each switch in the substation.
Specifically, the interval control terminal may determine whether the switching state of the switch, such as the opening state or the closing state, is normal or an abnormal condition exists according to the switching information. The interval control terminal can feed back the switching information and the operation execution result to the scheduling main station subsystem through the first operation and maintenance host, the scheduling main station subsystem can confirm whether the operation execution result is correct or not according to the switching information, and if the operation execution result is incorrect, the operation execution result is corrected.
As shown in fig. 3, the telecontrol host can collect a plurality of information such as "analog quantity", "auxiliary contact", "micro contact", "angle sensor", "position proximity device" and the like at all intervals required to be operated in the station, and can perform comprehensive judgment of the information; the interval measurement and control device can collect the analog quantity and the auxiliary contact points at the interval, the I area operation and maintenance equipment can collect a plurality of information such as the auxiliary contact points, the micro contact points, the angle sensors, the position proximity devices and the high-risk warning signals at the interval, and the comprehensive judgment of the information except the analog quantity at the interval can be carried out. The III-area operation and maintenance host can collect all the spaced III-area intelligent judgment 'high-risk alarm' signals and abnormal signals in the station, the III-area operation and maintenance equipment can collect the information collected by the spaced III-area intelligent equipment in the station and carry out autonomous intelligent judgment on the collected information, and sends the 'high-risk alarm' signals and abnormal signal judgment results to the upper-level system and outputs the 'high-risk alarm' signals to lock the contact to the I-area operation and maintenance equipment. The IV area operation and maintenance equipment can collect the information of the local interval in the station, carry out autonomous intelligent judgment on the collected information, send a high-risk alarm signal and an abnormal signal judgment result to the upper-level system, and output a high-risk alarm signal locking contact to the I area operation and maintenance equipment.
As shown in fig. 4, the telecontrol host can collect multiple information such as "analog quantity", "auxiliary contact", "micro contact", "angle sensor", "position proximity device" and the like at all intervals required to be operated in the station, and can comprehensively judge all the information; the interval measurement and control device can collect a plurality of information such as analog quantity, auxiliary contact, micro contact, angle sensor, position proximity device, high-risk alarm signals and the like of the interval, and can comprehensively judge all information of the interval. The III-area operation and maintenance host can collect all the III-area intelligent judgment 'high-risk alarm' signals and abnormal signals in the station, and does not perform comprehensive judgment; the III-area operation and maintenance equipment can collect the information of the local interval in the station, can carry out autonomous intelligent judgment on the collected information, sends a high-risk alarm signal and an abnormal signal judgment result to the upper-level system, and outputs the high-risk alarm signal to lock the contact to the interval measurement and control device. The IV area operation and maintenance equipment can collect the information of the local interval in the station, carry out autonomous intelligent judgment on the collected information, send a high-risk alarm signal and an abnormal signal judgment result to the upper-level system, and output the high-risk alarm signal to lock the contact to the interval measurement and control device. The intelligent monitoring system has the advantages of high concentration degree, high speed, high information safety, low comprehensive investment and the like, does not need the operation and maintenance inspection host in the safety I area and the safety II area, and has complete functions replaced by the telemechanical host, so that the system structure is simpler. When the control system is applied to the intelligent transformer substation, I-area operation and maintenance equipment of a safe I area is not needed, so that the system structure is simpler, the comprehensive investment is lower, and the operation and maintenance cost is lower.
Continuing to refer to fig. 4, the operation and maintenance equipment in the safety area III and the safety area IV in the transformer substation feeds back a "high-risk alarm" signal to the intelligent operation and maintenance equipment in the area I or the interval control terminal in the substation, the signal is an empty contact signal, and the information security level is high; meanwhile, the local terminals of the operation and maintenance equipment in the safe III area and the safe IV area installed in the transformer substation can perform autonomous high-risk alarm signal judgment, superior judgment is not needed, the influence caused by tampering of external virus information can be effectively avoided, and the information reliability is high; the method is characterized in that local judgment and local feedback are carried out, the method does not depend on a system and communication, the criterion principle is local learning, local generation or program solidification, the influence of virus information can be effectively avoided, locking operation can be carried out even if information security holes occur, and misoperation is prevented.
The control method for the substation provided by this embodiment is executed by an interval control terminal in a control system of the substation, where the control system includes: the system comprises a scheduling master station subsystem, an operation and maintenance master station subsystem and a control device in a transformer substation, wherein the control device comprises an operation and maintenance host, operation and maintenance equipment and an interval control terminal; the scheduling master station subsystem is in communication connection with the operation and maintenance master station subsystem, the operation and maintenance master station subsystem and the operation and maintenance equipment are both in communication connection with the operation and maintenance host, the scheduling master station subsystem is in communication connection with the interval control terminal, and the operation and maintenance equipment is used for sending a locking signal to the interval control terminal through a contact; receiving an operation instruction sent by a scheduling master station subsystem, wherein the operation instruction comprises a switch state confirmation instruction; acquiring switch information of each switch in the transformer substation according to the operation instruction; determining an operation execution result according to the switching information, and transmitting the switching information and the operation execution result to the dispatching master station subsystem; and the operation execution result comprises the switch state of each switch in the substation. According to the control method of the transformer substation, the operation execution result can be determined through the interval control terminal of the control system, local judgment and local feedback can be achieved, the influence of virus information can be effectively avoided without depending on a system and communication, locking operation can be performed even if information security holes occur, the phenomenon of misoperation is prevented, and therefore reliability of transformer substation control is improved.
Example two
Fig. 5 is a flowchart of a control method for a substation according to a second embodiment of the present invention, where the present embodiment is applicable to aspects such as controlling the substation, and the method may be executed by an interval control terminal in a control system of the substation, and the control method specifically includes the following steps:
step 210, receiving an operation instruction sent by the dispatching master station subsystem, wherein the operation instruction comprises an instruction for confirming the state of the switch.
And step 220, acquiring switch information of each switch in the transformer substation according to the operation instruction, wherein the switch information comprises a contact signal and an operation angle.
And step 230, determining the time difference of the contact signals and the angle range of the operation angle according to the contact signals and the operation angle of the switch.
Exemplarily, the switch includes an isolating switch and a grounding switch, taking the isolating switch as an example, fig. 6 is a schematic diagram of an isolating switch operated from on position to off position provided by the second embodiment of the present invention, and fig. 7 is a schematic diagram of an isolating switch operated from off position to on position provided by the second embodiment of the present invention. Referring to fig. 6 and 7, the closing auxiliary contact and the closing micro-contact of the isolating switch are respectively K1 and Q1, the separating auxiliary contact and the separating micro-contact of the isolating switch are respectively K2 and Q2, a time difference Δ T1 can be determined according to the disappearance time of the contact K1 and the disappearance time of the contact Q1, and an angle R1 is an angle of the isolating switch from closing to separating operation. Similarly, the time difference Δ T2 can be determined according to the disappearance time of the contact K2 and the disappearance time of the contact Q2, and the angle R2 is the angle of the disconnector from open position to closed position.
Fig. 8 is a schematic diagram illustrating a grounding switch from open position to closed position according to a second embodiment of the present invention, and fig. 9 is a schematic diagram illustrating a grounding switch from closed position to open position according to a second embodiment of the present invention. Referring to fig. 8 and 9, for example, the separation auxiliary contact and the separation micro contact of the earthing knife are respectively K3 and Q3, the closing auxiliary contact and the closing micro contact of the earthing knife are respectively K4 and Q4, a time difference Δ T3 can be determined according to the disappearance time of the contact K3 and the disappearance time of the contact Q1, and the angle R3 is an angle of the earthing knife operated from separation to closing. Similarly, the time difference Δ T4 can be determined according to the disappearance time of the contact K4 and the disappearance time of the contact Q4, and the angle R4 is the angle of the grounding knife from the closed position to the open position.
And 240, if the time difference exceeds a preset setting time range and the operation angle exceeds a preset setting angle range, determining that the on-off of the contact of the switch is abnormal and the opening and closing operation is abnormal.
Specifically, referring to fig. 6 and 7, if the time difference Δ T1 exceeds the preset setting time range and the operating angle exceeds the preset setting angle range, it is determined that the contact K1 and/or the contact Q1 of the disconnecting switch is abnormally opened and the opening operation is abnormally performed. Similarly, if the time difference Δ T2 exceeds the preset setting time range and the operating angle exceeds the preset setting angle range, it is determined that the contact K1 and/or the contact Q1 of the disconnecting switch are closed abnormally and the closing operation is abnormal. Referring to fig. 8 and 9, if the time difference Δ T3 exceeds the preset setting time range and the operating angle exceeds the preset setting angle range, it is determined that the contact K3 and/or the contact Q4 of the grounding switch are abnormally opened and the opening operation is abnormally performed. Similarly, if the time difference Δ T4 exceeds the preset setting time range and the operating angle exceeds the preset setting angle range, it is determined that the contact K3 and/or the contact Q4 of the grounding knife is abnormally closed and the closing operation is abnormally performed.
Step 250, transmitting the switch information and the operation execution result to a dispatching master station subsystem; and the operation execution result comprises the switch state of each switch in the substation.
Specifically, the scheduling master station subsystem is further configured to determine whether an operation execution result is correct according to the received switch information; and if the operation execution result is determined to be incorrect, correcting the operation execution result. The operation and maintenance host subsystem is used for transmitting the operation instruction to the operation and maintenance host subsystem, the operation and maintenance host subsystem is used for transmitting the operation instruction to the operation and maintenance equipment through the operation and maintenance host, the operation and maintenance equipment is used for executing operation and maintenance work according to the operation instruction, and a locking signal is generated when the operation of the switch is confirmed to be abnormal and before the operation of the switch is confirmed to be abnormal; the operation and maintenance equipment is also used for transmitting the blocking signal to the scheduling main station subsystem through the operation and maintenance host and the operation and maintenance main station subsystem. The scheduling master station subsystem determines the next operation according to the received blocking signal; if a lockout signal is received before a switch operation, the operation is locked out, preventing the operation from being allowed. The operation and maintenance work comprises a patrol task of a switch in the transformer substation and also can comprise abnormal detection work before the switch is operated.
And step 260, receiving the blocking signal transmitted by the operation and maintenance equipment, and transmitting the blocking signal to the scheduling master station subsystem.
Specifically, the scheduling master station subsystem is further configured to transmit the operation instruction to the operation and maintenance master station subsystem, the operation and maintenance master station subsystem is configured to transmit the operation instruction to the operation and maintenance device through the operation and maintenance host, the operation and maintenance device is configured to execute operation and maintenance work according to the operation instruction, and generate a locking signal when the switch operation is determined to be abnormal and when the switch operation is determined to be abnormal before; the operation and maintenance work comprises a patrol task of a switch in the transformer substation. And the interval control terminal is also used for receiving the blocking signal transmitted by the operation and maintenance equipment and transmitting the blocking signal to the scheduling main station subsystem. And the interval control terminal can lock the control operation of switching on and switching off the switch when receiving the locking signal, and the scheduling main station subsystem can lock the issuing of the corresponding operation instruction when receiving the locking signal.
Referring to fig. 3, the scheduling master station subsystem includes a "scheduling I zone", that is, a scheduling master station, and a "scheduling III zone", where intelligent operation and maintenance related information exchange is realized between the "scheduling I zone" and the "scheduling III zone" through a forward isolation device and a reverse isolation device. The dispatching side receives the operation result return information of the transformer substation side, intelligent operation result judgment is not needed, dispatching pressure can be reduced, and the development directions of edge technologies and edge judgment are met. The operation and maintenance master station subsystem comprises an operation and maintenance III area master station, namely an operation and maintenance master station, and the operation and maintenance III area master station is connected with a scheduling III area and a station end III area operation and maintenance host through a firewall to realize intelligent operation and maintenance related information exchange. The operation and maintenance side 'operation and maintenance III area master station' receives and forwards the scheduling side intelligent operation order, intelligent operation result judgment is not needed, the pressure of the 'operation and maintenance III area master station' is reduced, and the development directions of edge technology and edge judgment are met.
The telemechanical host can receive a superior intelligent operation task or command and reply an operation result of the intelligent operation task or command to an upper level, wherein the superior level comprises but is not limited to an intelligent operation task or command of a dispatching master station subsystem, an intelligent operation task or command of a dispatching and commanding system, an intelligent operation task or command of a patrol center system and an intelligent operation task or command of an intelligent operation and maintenance master station system; according to the requirement of the upper level command (in the upper level intelligent operation task or command, the upper level intelligent operation task or command is decomposed into a single-step operation task in the telecontrol host and a single-step operation task in the interval measurement and control device), the upper level intelligent operation task or command can be directly issued to the interval measurement and control device, and the operation result of the intelligent operation task or command fed back by the interval measurement and control device is received.
The telecontrol host receives the inspection result sent by the I-area operation and maintenance equipment, contains a certain interval high-risk alarm signal, and sends the received information to the corresponding measurement and control device and a superior system. The inspection result sent by the I area operation and maintenance equipment contains an autonomous inspection result such as periodic inspection, and if the autonomous inspection result contains a high-risk alarm signal, the intelligent inspection task is suspended. The telecontrol host machine also sends a patrol command to the I-area operation and maintenance equipment, the patrol command comprises prepared intelligent operation interval information and a time range, a comprehensive task or command of superior intelligent operation is decomposed into a single-step operation command, the single-step operation command is then sent to the interval measurement and control device, and a single-step operation result fed back by the interval measurement and control device is received (each single-step operation task is sent with a set delay, and if a high-risk alarm is received in the delay time period, the sending of the single-step operation task command is temporarily stopped until a continuous operation task is received or an operation ending task is received).
The telemechanical host can also comprehensively judge whether the operation result is correct or not by combining the received single-step operation result fed back by the interval measurement and control device and related analog quantity and system operation mode information acquired by the device, and can perform the next single-step operation task (the step-by-step comprehensive judgment operation result is correct, and the next single-step operation task is satisfied if the high-risk alarm is not received), if so, the next single-step operation task is sent to the interval measurement and control device, if not, the sending of the next single-step operation task to the interval measurement and control device is suspended until a continuous operation task or an operation ending task command is received, and the received continuous operation task or the operation ending task command comprises a manual input command; and when all the single-step operation tasks are finished, feeding back the operation result of the comprehensive task to the upper stage. The telemechanical host can also comprehensively judge whether the result of the comprehensive task is correct or not by combining the received comprehensive task operation result fed back by the interval measurement and control device with the relevant analog quantity and system operation mode information collected by the device, and then feeds back the comprehensive task operation result to the upper level.
The interval measurement and control device can receive an intelligent operation task or command issued by the telecontrol host and reply an operation result of the intelligent operation task or command to the telecontrol host; according to the command requirement of a superior telemechanical host (in the intelligent operation task or command of the telemechanical host, the intelligent operation task or command of the telemechanical host is decomposed into single-step operation tasks and directly executed), the comprehensive task or command of the intelligent operation of the telemechanical host is decomposed into single-step operation commands, then the operation tasks are executed step by step, and the related analog quantity and system operation mode information collected by the device are combined to comprehensively judge whether the operation result is correct step by step, whether the next step operation task can be carried out or not (the step comprehensive judgment operation result is correct and the high-risk alarm is not received, the next step operation task is satisfied), if yes, the next step operation task is carried out, if not, the next step operation task is suspended until a continuous operation task is received or an operation ending task command is received, the received operation continuing task or the received operation ending task command comprises a manual input command; and when all the single-step operation tasks are finished, feeding back the operation result of the comprehensive task to the telecontrol host. The interval measurement and control device can also execute a single-step operation command intelligently operated by the telemechanical host according to the command requirement of the superior telemechanical host, comprehensively judge whether the single-step operation task result is correct or not by combining related analog quantity and system operation mode information acquired by the device, and then feed back the operation result to the telemechanical host (the operation result has 3 types, namely correct, incorrect and incorrect reasons).
The I-area operation and maintenance equipment can receive an intelligent operation inspection task issued by the telecontrol host, and reply intelligent operation inspection result information and a received high-risk alarm signal to the telecontrol host, wherein the high-risk alarm signal comprises interval information; according to the step operation inspection command of the superior telemechanical host, and in combination with related analog quantity, switching value and system operation mode information (the information collected by the device contains physical position information such as auxiliary contacts, mechanical rotation angles, micro-motion contacts, position approximators and the like), comprehensively judging whether the step operation result is correct, and then feeding back the operation result to the telemechanical host (the operation result has 3 types, namely correct, incorrect and incorrect reasons). The III-region operation and maintenance host can receive an intelligent operation cooperation inspection task issued by a higher level, wherein the task comprises an execution time period, corresponding operation content, predicted time, operation interval and the like; according to the task, III-region operation and maintenance equipment needing to be started is calculated, and then split-phase patrol task orders (patrol contents, predicted time and the like) are sent to the III-region operation and maintenance equipment respectively.
The III-area operation and maintenance host receives an inspection result sent by III-area operation and maintenance equipment, if a high-risk alarm signal is not received, after the inspection result of all the intelligent operation coordination is received, the upper-level system feeds back the end of the intelligent operation coordination inspection and no abnormity is found; if the high-risk alarm signal is received, the intelligent operation abnormal position signal and the high-risk alarm signal are directly fed back to the superior system. The III-area operation and maintenance equipment can receive intelligent operation coordination inspection tasks issued by the III-area operation and maintenance host, complete inspection work in the task required time period, report inspection judgment results and send the inspection results to the III-area operation and maintenance host; if the patrol finds the high-risk alarm signal, the high-risk alarm contact signal is directly output to the I area operation and maintenance equipment. The IV area operation and maintenance equipment receives an intelligent operation cooperation inspection task issued by a higher level, wherein the task comprises an execution time period, corresponding operation content, predicted time, operation interval and the like; executing intelligent operation and inspection tasks, and uploading inspection results to the operation and maintenance master station; if the patrol finds the high-risk alarm signal, the high-risk alarm contact signal is directly output to the I area operation and maintenance equipment. The IV area operation and maintenance equipment can establish communication contact with the superior operation and maintenance master station through the safety isolation subsystem.
Referring to fig. 4, in the intelligent substation system, the functions of the "interval measurement and control device" include all functions of the "I-zone operation and maintenance equipment" in the conventional substation system, so that the system structure is simpler and more reliable, and has higher use and popularization values; however, the main advantage of the conventional substation system is that the intelligent operation and maintenance transformation project of the old substation is used, so that the hardware value of the interval measurement and control device in the conventional substation is not wasted. The telemechanical host can receive a superior intelligent operation task or command and reply an operation result of the intelligent operation task or command to an upper level, wherein the superior level comprises but is not limited to an intelligent operation task or command of a dispatching master station system, an intelligent operation task or command of a dispatching and commanding system, an intelligent operation task or command of a patrol center system and an intelligent operation task or command of an intelligent operation and maintenance master station system; the upper-level intelligent operation task or command can be directly issued to the interval measurement and control device and the operation result of the intelligent operation task or command fed back by the interval measurement and control device can be received according to the requirement of the upper-level command (in the upper-level intelligent operation task or command, the upper-level intelligent operation task or command is decomposed into a single-step operation task in the telecontrol host or a single-step operation task in the interval measurement and control device). The telecontrol host machine can receive the polling result sent by the interval measuring and controlling device and contains a certain interval high-risk alarm signal. The inspection result sent by the interval measurement and control device contains autonomous inspection results such as periodic inspection, and if the autonomous inspection results contain high-risk alarm signals, the intelligent inspection task is suspended.
The telecontrol host can decompose the comprehensive task or command of superior intelligent operation into a single-step operation command, then sends the single-step operation command to the interval measurement and control device, and receives the single-step operation result fed back by the interval measurement and control device. (each single step operation task is issued with a set delay, and if a high-risk alarm is received in the delay time period, the single step operation task command is temporarily stopped to be issued until a continuous operation task or an ending operation task is received). The telemechanical host can also comprehensively judge whether the operation result is correct or not by combining the received single-step operation result fed back by the interval measurement and control device with the relevant analog quantity and system operation mode information collected by the device, and can perform the next single-step operation task (the step-by-step comprehensive judgment operation result is correct, and the high-risk alarm is not received, the next single-step operation task is met), if yes, the next single-step operation task is sent to the interval measurement and control device, if not, the sending of the next single-step operation task to the interval measurement and control device is suspended until the continuous operation task or the ending operation task command is received, and the received continuous operation task or the ending operation task command comprises a manual input command; and when all the single-step operation tasks are finished, feeding back the operation result of the comprehensive task to the upper stage. The telemechanical host can also comprehensively judge whether the result of the comprehensive task is correct or not by combining the received comprehensive task operation result fed back by the interval measurement and control device with the relevant analog quantity and system operation mode information collected by the device, and then feeds back the comprehensive task operation result to the upper level.
The interval measurement and control device can receive an intelligent operation task or command issued by the telecontrol host and reply an operation result of the intelligent operation task or command to the telecontrol host; the intelligent operation comprehensive task or command of the telemechanical host can be decomposed into single-step operation commands and then the operation tasks are executed step by step according to the command requirements of the upper telemechanical host (in the intelligent operation task or command of the telemechanical host, the intelligent operation comprehensive task or command of the telemechanical host is decomposed into single-step operation tasks and directly executed single-step operation tasks), whether the operation result is correct or not is comprehensively judged step by combining related analog quantity and system operation mode information collected by the device, whether the next step single-step operation task can be carried out or not (the step comprehensive judgment operation result is correct and the high-risk alarm is not received, the next step single-step operation task is met), if yes, the next step single-step operation task is carried out, if not, the next step single-step operation task is suspended until a continuous operation task is received or an operation ending task command is received, the received operation continuing task or the received operation ending task command comprises a manual input command; and when all the single-step operation tasks are finished, feeding back the operation result of the comprehensive task to the telecontrol host.
The interval measurement and control device can also execute a single-step operation command intelligently operated by the telemechanical host according to the command requirement of the superior telemechanical host, comprehensively judge whether the single-step operation task result is correct or not by combining related analog quantity and system operation mode information acquired by the device, and then feed back the operation result to the telemechanical host (the operation result has 3 types, namely correct, incorrect and incorrect reasons). The interval measurement and control device can also reply intelligent operation inspection result information and a received high-risk alarm signal to the telemechanical host, wherein the high-risk alarm signal contains interval information.
The III-region operation and maintenance host can receive an intelligent operation cooperation inspection task issued by a superior operation and maintenance master station, wherein the task comprises an execution time period, corresponding operation content, predicted time, operation interval and the like; according to the task, III-region operation and maintenance equipment needing to be started is calculated, and then split-phase patrol task orders (patrol contents, predicted time and the like) are sent to the III-region operation and maintenance equipment needing to be started respectively. The III-area operation and maintenance host receives the inspection result of the III-area operation and maintenance equipment, if a high-risk alarm signal is not received, after the inspection result of all the intelligent operation coordination is received, the upper-level system feeds back the end of the intelligent operation coordination inspection and no abnormity is found; if the high-risk alarm signal is received, the intelligent operation abnormal position signal and the high-risk alarm signal are directly fed back to the superior system. The III-area operation and maintenance equipment receives an intelligent operation cooperation patrol task issued by the III-area operation and maintenance host, finishes patrol work in a task required time period, reports patrol judgment results and sends the patrol results to the III-area operation and maintenance host; if the patrol finds the high-risk alarm signal, the high-risk alarm contact signal is directly output to the interval measurement and control device. The IV area operation and maintenance equipment receives an intelligent operation coordination inspection task issued by a superior operation and maintenance master station, wherein the task comprises an execution time period, corresponding operation content, predicted time, operation interval and the like; executing intelligent operation and inspection tasks, and uploading inspection results to the operation and maintenance master station; if the patrol finds the high-risk alarm signal, the high-risk alarm contact signal is directly output to the interval measurement and control device. And the IV area operation and maintenance equipment establishes communication contact with the superior operation and maintenance master station through the safety isolation subsystem.
The system has simple loop design, adopts a direct judgment mode of operation and result and the safety area, avoids the influence of misoperation caused by misjudgment results of the safety III area and the safety IV area, effectively avoids the defects of the existing various designs because the judgment results of the safety III area and the safety IV area are only output in a locking way and have no allowable command, realizes the direct judgment of successful operation, and has very wide popularization and application values. The position which can not be operated (the stroke is too small) can be correctly judged, the operation can be correctly judged, the position which can be operated (the stroke is too large) can be judged, and meanwhile, the power supply operation of the trip motor can be protected; the integrity of a relevant loop can be monitored before the next operation, namely a high-risk warning contact signal can be received in advance, and site abnormality can be proposed in advance; the operation result can be judged by matching with manual operation and remote control operation; the method can prevent non-allowable misoperation, and can effectively prevent misoperation caused by electric circuit failure; and multiple judgments are combined to realize cooperative judgment, so that the working efficiency is obviously improved.
Moreover, the system can greatly reduce the arrangement quantity of the camera equipment, each judgment position is not required to be arranged in a safety III area in a one-to-one manner, the total equipment quantity of the whole station is obviously reduced, the network is obviously simplified, the comprehensive cost is lower, and the front-end equipment directly has the judgment function and accords with the development direction. When the intelligent patrol equipment in the safe area III and the safe area IV judges abnormity, the judgment signal contains a high-risk signal, other correct judgment signals are realized by the equipment in the safe area I and the safe area II (such as various meters, liquid positions, pointer positions and the like), and the thinking is completely different from the thinking of the existing system, and the thinking that the intelligent patrol equipment in the safe area III and the safe area IV of the existing system also judges normally is completely abandoned. The local terminals of the intelligent operation and maintenance systems of the safe III area and the safe IV area installed in the transformer substation only carry out autonomous high-risk alarm signal judgment and do not accept the superior judgment result, so that the influence caused by tampering of external virus information can be effectively avoided, and the information reliability is high; the method is characterized by in-situ judgment and in-situ feedback, does not depend on a system and communication, adopts the criterion principle of in-situ learning, in-situ generation or program solidification, and effectively avoids the influence of virus information.
According to the control method of the transformer substation provided by the embodiment, the interval control terminal in the control system of the transformer substation executes the operation, and the operation instruction comprises a switch state confirmation instruction by receiving the operation instruction sent by the dispatching master station subsystem; acquiring switch information of each switch in the transformer substation according to the operation instruction; determining an operation execution result according to the switching information, and transmitting the switching information and the operation execution result to the dispatching master station subsystem; and the operation execution result comprises the switch state of each switch in the substation. According to the control method of the transformer substation, the operation execution result can be determined through the interval control terminal of the control system, local judgment and local feedback can be achieved, the influence of virus information can be effectively avoided without depending on a system and communication, locking operation can be performed even if information security holes occur, the phenomenon of misoperation is prevented, and therefore reliability of transformer substation control is improved.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A control method of a substation, characterized in that the control method is executed by a bay control terminal in a control system of the substation, the control system comprising: the control device comprises an operation and maintenance host machine, operation and maintenance equipment and the interval control terminal; the scheduling master station subsystem is in communication connection with the operation and maintenance master station subsystem, the operation and maintenance master station subsystem and the operation and maintenance equipment are both in communication connection with the operation and maintenance host, and the scheduling master station subsystem is in communication connection with the interval control terminal; the operation and maintenance equipment is used for sending a locking signal to the interval control terminal through the contact;
the control method comprises the following steps:
receiving an operation instruction sent by the dispatching master station subsystem, wherein the operation instruction comprises a switch state confirmation instruction;
acquiring switch information of each switch in the transformer substation according to the operation instruction;
determining an operation execution result according to the switching information, and transmitting the switching information and the operation execution result to the dispatching master station subsystem; wherein the operation execution result comprises the switch state of each switch in the substation.
2. The substation control method according to claim 1, wherein the control system further comprises a telemechanical host, and the telemechanical host is in communication connection with the scheduling master station subsystem and the interval control terminal; and the scheduling main station subsystem is used for sending the operation instruction to the interval control terminal through the telecontrol host.
3. The control method of a substation according to claim 1, wherein the switching information includes a contact signal and an operation angle;
the determining an operation execution result according to the switch information includes:
determining the time difference of the contact signals and the angle range of the operation angle according to the contact signals and the operation angle of the switch;
and if the time difference exceeds a preset setting time range and the operation angle exceeds a preset setting angle range, determining that the on-off of the contact of the switch is abnormal and the opening and closing operation is abnormal.
4. The substation control method according to claim 1, wherein the dispatch master station subsystem is further configured to determine whether the operation execution result is correct according to the received switch information; and if the operation execution result is determined to be incorrect, correcting the operation execution result.
5. The substation control method according to claim 1, wherein the scheduling master station subsystem is further configured to transmit the operation instruction to the operation and maintenance master station subsystem, the operation and maintenance master station subsystem is configured to transmit the operation instruction to the operation and maintenance device through the operation and maintenance host, the operation and maintenance device is configured to perform operation and maintenance work according to the operation instruction, generate the blocking signal when it is determined that the switch is abnormally operated, and send the blocking signal to the interval control terminal through the contact; and the operation and maintenance work comprises a patrol task of the switch in the transformer substation.
6. The substation control method according to claim 1, wherein the transmitting the switching information and the operation execution result to the dispatch master station subsystem comprises:
and receiving the blocking signal transmitted by the operation and maintenance equipment, and transmitting the blocking signal to the scheduling master station subsystem.
7. A control system of a substation, comprising: the system comprises a scheduling master station subsystem, an operation and maintenance master station subsystem and a control device in a transformer substation, wherein the control device comprises an operation and maintenance host, operation and maintenance equipment and an interval control terminal; the scheduling master station subsystem is in communication connection with the operation and maintenance master station subsystem, the operation and maintenance master station subsystem and the operation and maintenance equipment are both in communication connection with the operation and maintenance host, and the scheduling master station subsystem is in communication connection with the interval control terminal; the operation and maintenance equipment sends a locking signal to the interval control terminal through a contact point;
the interval control terminal is used for receiving an operation instruction sent by the dispatching master station subsystem, and the operation instruction comprises a switch state confirmation instruction; acquiring switch information of each switch in the transformer substation according to the operation instruction; determining an operation execution result according to the switch information, wherein the operation execution result comprises the switch state of each switch in the transformer substation; and transmitting the switching information and the operation execution result to the dispatching master station subsystem, and sending corresponding prompt information.
8. The control system of the substation according to claim 7, wherein the scheduling master station subsystem is further configured to transmit the operation instruction to the operation and maintenance master station subsystem, the operation and maintenance master station subsystem is configured to transmit the operation instruction to the operation and maintenance device through the operation and maintenance host, and the operation and maintenance device is configured to execute operation and maintenance work according to the operation instruction and generate the blocking signal when it is determined that the switch is abnormally operated; and the operation and maintenance work comprises a patrol task of the switch in the transformer substation.
9. The substation control system of claim 7, wherein the operation and maintenance device is further configured to transmit the blocking signal to the dispatch master subsystem via the operation and maintenance host and the operation and maintenance master subsystem.
10. The substation control system of claim 7, wherein the bay control terminal is further configured to receive the blocking signal transmitted by the operation and maintenance device and transmit the blocking signal to the dispatch master station subsystem.
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