CN117277550A - Method and system for automatically and sequentially controlling isolating switch power supply and body - Google Patents
Method and system for automatically and sequentially controlling isolating switch power supply and body Download PDFInfo
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- CN117277550A CN117277550A CN202310942464.3A CN202310942464A CN117277550A CN 117277550 A CN117277550 A CN 117277550A CN 202310942464 A CN202310942464 A CN 202310942464A CN 117277550 A CN117277550 A CN 117277550A
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- 238000012544 monitoring process Methods 0.000 claims description 28
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- 238000001514 detection method Methods 0.000 claims description 11
- 238000009529 body temperature measurement Methods 0.000 claims description 10
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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Abstract
The invention discloses a method and a system for automatically and sequentially controlling an isolating switch power supply and a body, which relate to the field of automatic control of a transformer substation and comprise the steps that a protection measurement and control device receives a control command and sends the control command to a central processing unit; the central processing unit acquires the gate information and compares the gate information with preset conditions, if the preset conditions are met, the control is performed according to the control command, and if the preset conditions are not met, the control command is alarmed and refused to be executed; when the preset conditions are met for control, the current temperatures of the switch equipment and the auxiliary equipment are monitored in real time, the preset values are compared with the current temperatures to judge the conditions of the switch equipment and the auxiliary equipment, if the conditions are normal, the switch equipment and the auxiliary equipment are operated normally, if the conditions are abnormal, corresponding measures are carried out according to the temperature information, and the problem is found out through a judging model to be solved. Compared with the traditional electric locking, step-by-step operation control power supply and control to the isolating switch body, the invention has fewer loops, simpler operation steps and more reliability by utilizing a program control technology.
Description
Technical Field
The invention relates to the field of automatic control of substations, in particular to a method and a system for automatically and sequentially controlling an isolating switch power supply and a body.
Background
With the development of the current power grid technology, most of 220kV and below substations are unattended substations, and because cross-region and cross-domain interconnected power grids exist in part of substations, the cross-region and cross-domain interconnected power grids are often in a cold standby state; and the pole individual transformer substation has no second power supply point, so that after a part of power transmission lines permanently fail, the backup automatic switching equipment and other automatic safety equipment cannot be utilized to quickly and automatically recover power supply back-up, and the power supply cannot be recovered from the cross-regional and cross-provincial power grids in a short time.
The operation of the isolating switch is related to the operation of the isolating switch in the processes of fault processing, mode adjustment and the like, the isolating switch is mainly operated by a manual site in the current power system, and the remote control isolating switch power supply is switched in front of the electric mechanism operation loop of the isolating switch, so that the operation is convenient, the safety is high, and a great amount of time is saved for the switching operation of the works of fault processing, mode adjustment and the like.
The invention aims to realize automatic control of an unattended transformer substation and timely recover power supply.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description summary and in the title of the application, to avoid obscuring the purpose of this section, the description summary and the title of the invention, which should not be used to limit the scope of the invention.
The present invention has been made in view of the above-described problems.
The problem to be solved by the invention is therefore how to implement automatic control for an unattended substation.
In order to solve the technical problems, the invention provides the following technical scheme: a method and system for automatically and sequentially controlling an isolating switch power supply and a body comprises the steps that a protection measurement and control device receives a control command and sends the control command to a central processing unit; the central processing unit acquires the gate information and compares the gate information with preset conditions, if the preset conditions are met, the control is performed according to the control command, and if the preset conditions are not met, the control command is alarmed and refused to be executed; when the preset conditions are met for control, the current temperatures of the switch equipment and the auxiliary equipment are monitored in real time, the preset values are compared with the current temperatures to judge the conditions of the switch equipment and the auxiliary equipment, if the conditions are normal, the switch equipment and the auxiliary equipment are operated normally, if the conditions are abnormal, corresponding measures are carried out according to the temperature information, and the problem is found out through a judging model to be solved.
As a preferred scheme of the method for automatically and sequentially controlling the isolating switch power supply and the body, the invention comprises the following steps: the gate information comprises state information of a grounding disconnecting link, a circuit breaker and a disconnecting switch; the comparison with the preset condition comprises that the monitoring terminal collects imaging information of the position of the isolating switch and automatically compares the imaging information of the opening and closing position of the preset isolating switch.
As a preferred scheme of the method for automatically and sequentially controlling the isolating switch power supply and the body, the invention comprises the following steps: the preset conditions include that the preset conditions include,
when the circuit breaker 1=0, the grounding disconnecting link 2=0 and the grounding disconnecting link 3=0, the control power authority of the motor power is opened; when the breaker 1=1, locking all motor power supply control authorities; when the grounding disconnecting link 1=1 and the breaker 1=0, locking the motor power control authority of the isolating switch 1; when the grounding disconnecting link 3=1 and the breaker 1=0, locking the motor power control authority of the isolating switch 3; when the grounding disconnecting link 2=1 and the breaker 1=0, locking the motor power control authority of the isolating switch 3; when the grounding disconnecting link 1=0, the grounding disconnecting link 2=0 and the circuit breaker 1=0, the motor power control authority of the isolating switch 1 is opened; when the grounding disconnecting link 2=0, the grounding disconnecting link 3=0 and the circuit breaker 1=0, the motor power control authority of the isolating switch 3 is opened; when the conditions are not met, all the motor power control authorities of the isolating switch 1 and the isolating switch 3 are locked, and the motor power control authorities of the isolating switch are locked and an alarm is output; wherein 0 represents that the isolating switch, the grounding disconnecting link and the circuit breaker are in the separated position, and 1 represents that the isolating switch, the grounding disconnecting link and the circuit breaker are in the combined position.
As a preferred scheme of the method for automatically and sequentially controlling the isolating switch power supply and the body, the invention comprises the following steps: the preset conditions further comprise that when the power supply control right of the motor is opened by the isolating switch 1 or the isolating switch 3, the control command sent by the measurement and control device is received and then executed; the execution comprises the motor power supply and the control power supply of the isolating switch 1 or the isolating switch 3 are closed; checking whether the motor power supply and the control power supply voltage of the isolating switch 1 or the isolating switch 3 meet the power station voltage regulation, executing the next step if the motor power supply and the control power supply voltage meet the power station voltage regulation, outputting the control power supply or the motor power supply abnormality alarm if the motor power supply and the control power supply voltage do not meet the power station voltage regulation, and executing the next step; outputting a closing command of the body of the isolating switch 1 or the isolating switch 3, returning to a monitoring picture of the monitoring terminal through a position monitoring camera of the monitoring terminal after the closing position returns, judging whether the closing is in place, sending out a position abnormality alarm if the closing is not in place, and starting to monitor the operating temperature when the closing is in place if the closing is in place.
As a preferred scheme of the method for automatically and sequentially controlling the isolating switch power supply and the body, the invention comprises the following steps: the monitoring of the current temperatures of the switch equipment and the auxiliary equipment comprises the steps that when preset conditions are met and the control is carried out according to a control command, a temperature acquisition module in a detection terminal is started, and the temperature of the isolating switch is monitored once every half an hour; the judging of the switch equipment and the accessory equipment condition comprises the following steps: if t is more than 80 ℃, triggering a primary alarm, increasing the frequency of temperature monitoring of the isolating switch, and if the temperature monitoring is in an ascending trend, informing equipment operators of manual inspection and examination of field equipment; if t is more than 100 ℃, triggering a secondary alarm, reporting a major defect, combining a power failure plan, and after the corresponding equipment is shut down in a planned way, detecting equipment and circuit problems of the isolating switch by equipment personnel and maintaining the equipment and the circuit problems; if t is more than 120 ℃, triggering three-level alarm, reporting an emergency defect, adjusting the running mode of the power grid, adjusting the running heating equipment to be in an overhauling state, and comprehensively overhauling the equipment and the circuit by an overhauling personnel; if t is less than or equal to 80 ℃, the normal operation is carried out.
As a preferred scheme of the method for automatically and sequentially controlling the isolating switch power supply and the body, the invention comprises the following steps: the evaluation model includes:
I (t) ＝(I 0 ωcosωt) 2 *R*t
H (t) ＝m*c
S (t) ＝(I 0 ωcosωt) 2 *R*e (-λt) *t
wherein I is (t) Representing the load current function, G (t) Represents the closing function of the switching device, H (t) Ambient temperature function, S (t) Device loss function, I 0 The amplitude, t, the current moment, R, the current resistance, ρ, the resistivity and L are expressed Breaking of the wire Indicating the closing length of the circuit breaker, L Knife Represents the closing length of the grounding switch, L Partition board Indicating the closing length of the isolating switch, L Total (S) The total length of the switch is represented, A represents the cross-sectional area of the switch, m represents the equivalent of ambient gas at the moment, c represents the specific heat capacity, and lambda represents the attenuation coefficient.
As a preferred scheme of the method for automatically and sequentially controlling the isolating switch power supply and the body, the invention comprises the following steps: the method comprises the steps that when the P is less than or equal to 6500, the load current condition and the environment temperature condition are judged to be abnormal, an operator can carry out on-site inspection and check, the temperature measurement is carried out through different temperature measuring equipment, the temperature measurement results of the load current condition and the environment temperature condition are compared, whether the isolating switch is separated and combined in place is determined, the real-time load condition of the equipment is checked, the accuracy of the infrared temperature measuring equipment is checked when the relative difference between the two temperature measurements exceeds a preset threshold value, if the on-site real-time temperature is determined to be higher than 80 ℃ and the isolating switch is combined in place, an maintainer is informed to carry out equipment maintenance in combination with a power failure plan, if the on-site real-time temperature is higher than 80 ℃ and the isolating switch is combined in place, the scheduler is informed to arrange the equipment power failure, the on-site manual operation is carried out on the isolating switch, after the isolating switch is closed on site by the operator, the temperature change is detected in real time, if the temperature is lower than or equal to 80 ℃, the equipment is normally operated, and the equipment is still higher than 80 ℃ and the condition and the switch contact condition is checked; when P >6500, judging that the condition of the switch equipment and the condition of the switch contact are abnormal, informing a dispatcher, stopping power supply of the dispatching emergency equipment by the dispatcher, manually operating the isolating switch by the operator, ensuring that the moving contact and the fixed contact of the isolating switch are fully contacted, detecting temperature change in real time after switching on, stopping operation to ensure that the equipment normally operates if the temperature is less than or equal to 80 ℃, removing rust on the contact part of the moving contact and the fixed contact of the switch equipment if the temperature is still greater than 80 ℃, connecting the contacts to detect temperature change in real time, stopping operation to ensure that the equipment normally operates if the temperature is less than or equal to 80 ℃, and checking the load current condition and the environmental temperature condition of the equipment if the temperature is still greater than 80 ℃; if the switch equipment condition, the switch contact condition, the load current condition and the environment temperature condition are all in normal states, acquiring motor running current and torque force information; when Id > Izd or Nd > Nzd, an abnormal alarm of the operation parameters of the output motor is sent out, and the transmission mechanism controlled by the isolating switch is checked by the intervention of a maintenance team in combination with alarm information; when Id is less than or equal to Izd and Nd is less than or equal to Nzd, a problem occurs in the system is reported to the upper level, and a system dispatching technician is mediated to overhaul the system; where Id represents the run-time motor current, izd represents the device set run current, nd represents the run-time motor torque force, and Nzd represents the device set run torque force.
It is another object of the present invention to provide an automatic sequence control isolation switching power supply and body system that operates the power air switch and enables detection of operating loops, motor speed, motor drive current, infrared temperature measurement, etc. and other anomalies.
In order to solve the technical problems, the invention provides the following technical scheme that the system for automatically and sequentially controlling the isolating switch power supply and the body comprises a protection measurement and control device, a central processing unit and a detection terminal; the protection measurement and control device is used for receiving the control command, and after the upper level sends out the control command, the protection measurement and control device receives the control command; the central processing unit is used for judging information and executing a strategy, comparing the gate information of the switching equipment with preset conditions to judge the condition and implement corresponding actions, judging the temperature condition of the equipment through temperature information, if no problem exists, operating normally, if the problem exists, carrying out corresponding measures, and finding out the problem to solve through a judging model; the detection terminal is used for detecting equipment information, and the monitoring terminal collects imaging information of the position of the isolating switch, equipment temperature information, resistance and switch equipment closing length information and motor running current and torque force information.
A computer device comprising a memory and a processor, said memory storing a computer program, characterized in that the processor, when executing said computer program, implements the steps of a method of automatic sequential control of an isolated switching power supply and an ontology as described above.
A computer readable storage medium having stored thereon a computer program, characterized in that the computer program when executed by a processor implements the steps of a method of automatic sequential control of an isolated switching power supply and an ontology as described above.
The invention has the beneficial effects that: the invention utilizes the program control technology to match with the controllable relay to realize the motor power supply of the remote switching isolating switch, can implement detection of each parameter, alarms when abnormality occurs and performs corresponding actions, and utilizes the program control technology to control the power supply to the isolating switch body after the traditional electric locking, step-by-step operation control power supply and control the power supply, so that the circuit is fewer, the operation steps are simpler and more reliable.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
fig. 1 is a flowchart of a method for automatically and sequentially controlling an isolated switching power supply and an isolated switching power supply according to embodiment 1.
Fig. 2 is a diagram showing a gate apparatus distribution diagram of a method for automatically controlling the power supply and the body of the isolating switch according to embodiment 1.
Fig. 3 is a block diagram of an automatic sequential control isolation switching power supply and a body system in embodiment 3.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
Referring to fig. 1 and 2, a first embodiment of the present invention provides a method for automatically and sequentially controlling an isolated switching power supply and a body, which includes the steps of:
step one, the protection measurement and control device receives the control command and sends the control command to the central processing unit, and the superior selects a proper transformer substation to start the command according to the condition of the electricity utilization user, and the protection measurement and control device receives the control command and sends the control command to the central processing unit.
And secondly, the central processing unit acquires the gate information and compares the gate information with preset conditions, if the preset conditions are met, the control is performed according to the control command, and if the preset conditions are not met, the control command is alarmed and refused to be executed.
The monitoring terminal collects imaging information of the position of the isolating switch, and comprises state information of a grounding disconnecting link, a circuit breaker and the isolating switch, and the imaging information of the opening and closing position of the preset isolating switch is automatically compared.
As shown in fig. 2, when the circuit breaker 1=0, the grounding switch 2=0, and the grounding switch 3=0, the control power authority of the motor power is opened.
When the circuit breaker 1=1, then all motor power control rights are blocked.
When the grounding disconnecting link 1=1 and the breaker 1=0, the motor power control authority of the isolating switch 1 is locked.
When the grounding disconnecting link 3=1 and the breaker 1=0, the motor power control authority of the disconnecting switch 3 is locked.
When the grounding disconnecting link 2=1 and the breaker 1=0, the motor power control authority of the disconnecting switch 3 is locked.
When the grounding disconnecting link 1=0, the grounding disconnecting link 2=0 and the circuit breaker 1=0, the motor power control authority of the isolating switch 1 is opened.
When the grounding disconnecting link 2=0, the grounding disconnecting link 3=0 and the circuit breaker 1=0, the motor power control authority of the disconnecting switch 3 is opened.
When the conditions are not met, the motor power control authorities of the isolating switch 1 and the isolating switch 3 are all locked, and the alarm is output when the motor power control authorities of the isolating switch are locked.
When the control right of the motor power supply is opened by the isolating switch 1 or the isolating switch 3, the control command sent by the measurement and control device is received and then executed, comprising the following stages,
the first stage: and closing the motor power supply and the control power supply of the isolating switch 1 or the isolating switch 3 to perform the second stage.
And a second stage: and checking whether the motor power supply and the control power supply voltage of the isolating switch 1 or the isolating switch 3 meet the power station voltage regulation, executing the third stage if the motor power supply and the control power supply voltage meet the power station voltage regulation, outputting the control power supply or the motor power supply abnormality alarm if the motor power supply and the control power supply voltage do not meet the power station voltage regulation, and not executing the third stage.
And a third stage: outputting a closing command of the body of the isolating switch 1 or the isolating switch 3, returning to a monitoring picture of the monitoring terminal through a position monitoring camera of the monitoring terminal after the closing position returns, judging whether the closing is in place, sending out a position abnormality alarm if the closing is not in place, and starting to monitor the operating temperature when the closing is in place if the closing is in place.
Wherein 0 represents that the isolating switch, the grounding disconnecting link and the circuit breaker are in the separated position, and 1 represents that the isolating switch, the grounding disconnecting link and the circuit breaker are in the combined position.
And thirdly, when the preset conditions are met for control, the current temperatures of the switch equipment and the auxiliary equipment are monitored in real time, the preset values are compared with the current temperatures to judge the conditions of the switch equipment and the auxiliary equipment, if the conditions are normal, the switch equipment and the auxiliary equipment are operated normally, if the conditions are abnormal, corresponding measures are carried out according to the temperature information, and the problem is found out through a judging model to be solved.
When the preset conditions are met and the control is performed according to the control command, a temperature acquisition module in the detection terminal is started, the temperature of the position of the isolating switch is monitored once every half an hour, the total monitoring time is 24 hours, and the running temperature in a specified time period is automatically acquired every day.
If t is more than 80 ℃, triggering a primary alarm, increasing the frequency of temperature monitoring of the isolating switch, and if the temperature monitoring is in an ascending trend, informing equipment operators of manual inspection and examination of field equipment.
If t is more than 100 ℃, triggering a secondary alarm, reporting a major defect, combining a power failure plan, and after the corresponding equipment is shut down in a planned way, detecting equipment and circuit problems of the isolating switch by equipment personnel and maintaining.
If t is more than 120 ℃, triggering three-level alarm, reporting emergency defects, adjusting the running mode of the power grid, adjusting the running heating equipment to be in an overhauling state, and comprehensively overhauling the equipment and the circuit by an overhauling personnel.
If t is less than or equal to 80 ℃, the normal operation is carried out.
If the equipment temperature is too high to reach the alarm condition, finding out the reason for the too high temperature, and constructing a judgment model:
I (t) ＝(I 0 ωcosωt) 2 *R*t
H (t) ＝m*c
S (t) ＝(I 0 ωcosωt) 2 *R*e (-λt) *t
wherein I is (t) Representing the load current function, G (t) Represents the closing function of the switching device, H (t) Ambient temperature function, S (t) Device loss function, I 0 The amplitude, t, the current moment, R, the current resistance, ρ, the resistivity and L are expressed Breaking of the wire Indicating the closing length of the circuit breaker, L Knife Represents the closing length of the grounding switch, L Partition board Indicating the closing length of the isolating switch, L Total (S) The total length of the switch is represented, A represents the cross-sectional area of the switch, m represents the equivalent of ambient gas at the moment, c represents the specific heat capacity, and lambda represents the attenuation coefficient.
Because the general temperature climbs slowly under the condition that the equipment temperature becomes high due to the load current and the environmental temperature in the actual working condition, when 3300< P is less than or equal to 6500 according to judgment model, the load current condition and the environmental temperature condition are judged to be abnormal, and operators patrol and examine on site, and patrol: temperature measurement is carried out through different temperature measuring equipment, and the temperature measurement results of the two are compared; checking: determining whether the isolating switch is in place or not, and checking the real-time load condition of the equipment; if the relative difference between the two temperature measurement is larger, the accuracy of the infrared temperature measurement equipment is checked; if the real-time temperature of the site is higher than 80 ℃ and the isolating switch is closed in place, notifying an maintainer to carry out equipment maintenance by combining the power failure plan. If the on-site real-time temperature is higher than 80 ℃ and the closing of the isolating switch is not in place, a scheduler is informed to arrange equipment to have a power failure, and the on-site manual operation of the opening and closing of the isolating switch is changed. After an operator closes the isolating switch on site, the temperature change is detected in real time, if the temperature is less than or equal to 80 ℃, the operation is stopped to enable the equipment to normally operate, and if the temperature is still more than 80 ℃, the condition of the switching equipment and the condition of the switching contact are checked.
Because the temperature of the equipment is higher under the condition that the switch closing length and the switch contact point are caused by the problem of the switch closing length and the switch contact point in the actual working condition, the temperature is generally faster to climb, so that when P is judged to be more than 6500 according to a judgment model, the situation of the switch equipment and the situation of the switch contact point are judged to be abnormal, an operator informs a dispatcher, the equipment is scheduled to have a power failure in an emergency mode through dispatching, and the operator manually operates the isolating switch to switch on and switch off, so that the moving contact point and the fixed contact point of the isolating switch are ensured to be fully contacted, the temperature change is detected in real time after switching on, if the temperature is less than or equal to 80 ℃, the operation is stopped to enable the equipment to normally operate, if the temperature is still greater than 80 ℃, the contact point of the moving contact point and the fixed contact point of the switching equipment is polished, and the anti-oxidation paint is sprayed on and the contact point is connected to the contact point to be detected in real time, if the temperature is less than or equal to 80 ℃.
And if the switch equipment condition, the switch contact condition, the load current condition and the environment temperature condition are all in normal states, acquiring motor running current and torque force information.
When Id > Izd or Nd > Nzd, an abnormal alarm of the operation parameters of the output motor is sent out, and the transmission mechanism controlled by the isolating switch is checked by the intervention of a maintenance team in combination with alarm information.
When Id is less than or equal to Izd and Nd is less than or equal to Nzd, the system self-service problem is reported to the upper level, and the system is mediated to be sent by a technician for overhauling the system.
Where Id represents the run-time motor current, izd represents the device set run current, nd represents the run-time motor torque force, and Nzd represents the device set run torque force.
Wherein, t is generally 0.5h,3300 and 6500 are optimized through a large amount of experimental data (the unit is kilowatt), so as to meet the working condition requirement, and particularly please see the active power meter of the transformer substation for nearly three years:
table 1: active power meter of transformer substation in nearly three years
The threshold is formulated based on the maximum active power in the table.
Example 2
A second embodiment of the present invention, which is different from the first embodiment, is: the method for automatically and sequentially controlling the isolating switch power supply and the body further comprises the step of comparing test results by means of scientific demonstration by adopting the traditional technical scheme with the issuing of the invention in order to verify and explain the technical effects adopted in the method, so as to verify the real effects of the method.
The conventional method and the method of the invention are put into operation respectively to carry out experiments, and experimental data are collected to carry out the following steps:
table 2: experimental data comparison table
| Response time | Controlling the accuracy rate | |
| Conventional method | 2—3h | 97.56％ |
| The method of the invention | 10—30min | 98.87％ |
As can be seen from the comparison data, the response time of the method is far shorter than that of the traditional method, when the traditional method is adopted and a transformer substation needs to be started, personnel are required to be added first, the personnel reach the transformer substation and then feed back relevant parameter data of the transformer substation to the upper level, the upper level gives a command according to the parameters, the flow is too complicated and time-consuming, the cost of a power plant is increased, bad experience is brought to customers, the method of the method adopts a strategy of reporting in real time by a system, the control is automatically carried out when the command is sent, the response speed is extremely high, and the safety of the power plant is effectively ensured.
The control accuracy of the method is far higher than that of the traditional method, the traditional method is easy to report due to the difference of technical capability and experience among staff during manual monitoring, and further control commands are not in accordance with working conditions, running time is wasted, and the power plant is influenced.
Example 3
Referring to fig. 3, a third embodiment of the present invention is shown, which is different from the first two embodiments: a system for automatically and sequentially controlling a method for isolating a switch power supply and a body comprises a protection measurement and control device, a central processing unit and a detection terminal; the protection measurement and control device is used for receiving the control command, and after the upper level sends out the control command, the protection measurement and control device receives the control command; the central processing unit is used for judging information and executing a strategy, comparing the gate information of the switching equipment with preset conditions to judge the condition and implement corresponding actions, judging the temperature condition of the equipment through temperature information, if no problem exists, operating normally, if the problem exists, carrying out corresponding measures, and finding out the problem to solve through a judging model; the detection terminal is used for detecting equipment information, and the monitoring terminal collects imaging information of the position of the isolating switch, equipment temperature information, resistance and switch equipment closing length information and motor running current and torque force information.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (10)
1. A method for automatically and sequentially controlling an isolating switch power supply and a body is characterized in that: comprising the steps of (a) a step of,
the protection measurement and control device receives the control command and sends the control command to the central processing unit;
the central processing unit acquires the gate information and compares the gate information with preset conditions, if the preset conditions are met, the control is performed according to the control command, and if the preset conditions are not met, the control command is alarmed and refused to be executed;
when the preset conditions are met for control, the current temperatures of the switch equipment and the auxiliary equipment are monitored in real time, the preset values are compared with the current temperatures to judge the conditions of the switch equipment and the auxiliary equipment, if the conditions are normal, the switch equipment and the auxiliary equipment are operated normally, if the conditions are abnormal, corresponding measures are carried out according to the temperature information, and the problem is found out through a judging model to be solved.
2. The method for automatically and sequentially controlling the isolating switch power supply and the body according to claim 1, wherein: the gate information comprises state information of a grounding disconnecting link, a circuit breaker and a disconnecting switch;
the comparison with the preset condition comprises that the monitoring terminal collects imaging information of the position of the isolating switch and automatically compares the imaging information of the opening and closing position of the preset isolating switch.
3. A method for automatically and sequentially controlling an isolated switching power supply and a body as claimed in claim 2, wherein: the preset conditions comprise that when the circuit breaker 1=0, the grounding disconnecting link 2=0 and the grounding disconnecting link 3=0, the control power supply authority of the motor power supply is opened;
when the breaker 1=1, locking all motor power supply control authorities;
when the grounding disconnecting link 1=1 and the breaker 1=0, locking the motor power control authority of the isolating switch 1;
when the grounding disconnecting link 3=1 and the breaker 1=0, locking the motor power control authority of the isolating switch 3;
when the grounding disconnecting link 2=1 and the breaker 1=0, locking the motor power control authority of the isolating switch 3;
when the grounding disconnecting link 1=0, the grounding disconnecting link 2=0 and the circuit breaker 1=0, the motor power control authority of the isolating switch 1 is opened;
when the grounding disconnecting link 2=0, the grounding disconnecting link 3=0 and the circuit breaker 1=0, the motor power control authority of the isolating switch 3 is opened;
when the conditions are not met, all the motor power control authorities of the isolating switch 1 and the isolating switch 3 are locked, and the motor power control authorities of the isolating switch are locked and an alarm is output;
wherein 0 represents that the isolating switch, the grounding disconnecting link and the circuit breaker are in the separated position, and 1 represents that the isolating switch, the grounding disconnecting link and the circuit breaker are in the combined position.
4. A method for automatically and sequentially controlling an isolated switching power supply and a body as claimed in claim 3, wherein: the preset conditions further comprise that when the power supply control right of the motor is opened by the isolating switch 1 or the isolating switch 3, the control command sent by the measurement and control device is received and then executed;
the execution comprises the motor power supply and the control power supply of the isolating switch 1 or the isolating switch 3 are closed;
checking whether the motor power supply and the control power supply voltage of the isolating switch 1 or the isolating switch 3 meet the power station voltage regulation, executing the next step if the motor power supply and the control power supply voltage meet the power station voltage regulation, outputting the control power supply or the motor power supply abnormality alarm if the motor power supply and the control power supply voltage do not meet the power station voltage regulation, and executing the next step;
outputting a closing command of the body of the isolating switch 1 or the isolating switch 3, returning to a monitoring picture of the monitoring terminal through a position monitoring camera of the monitoring terminal after the closing position returns, judging whether the closing is in place, sending out a position abnormality alarm if the closing is not in place, and starting to monitor the operating temperature when the closing is in place if the closing is in place.
5. The method for automatically and sequentially controlling the isolating switch power supply and the body according to claim 4, wherein: the monitoring of the current temperatures of the switch equipment and the auxiliary equipment comprises the steps that when preset conditions are met and the control is carried out according to a control command, a temperature acquisition module in a detection terminal is started, and the temperature of the isolating switch is monitored once every half an hour;
the judging of the switch equipment and the accessory equipment condition comprises the following steps:
if t is more than 80 ℃, triggering a primary alarm, increasing the frequency of temperature monitoring of the isolating switch, and if the temperature monitoring is in an ascending trend, informing equipment operators of manual inspection and examination of field equipment;
if t is more than 100 ℃, triggering a secondary alarm, reporting a major defect, combining a power failure plan, and after the corresponding equipment is shut down in a planned way, detecting equipment and circuit problems of the isolating switch by equipment personnel and maintaining the equipment and the circuit problems;
if t is more than 120 ℃, triggering three-level alarm, reporting an emergency defect, adjusting the running mode of the power grid, adjusting the running heating equipment to be in an overhauling state, and comprehensively overhauling the equipment and the circuit by an overhauling personnel;
if t is less than or equal to 80 ℃, the normal operation is carried out.
6. The method for automatically and sequentially controlling the isolating switch power supply and the body according to claim 5, wherein: the evaluation model includes:
I (t) ＝(I 0 ωcosωt) 2 *R*t
H (t) ＝m*c
S (t) ＝(I 0 ωcosωt) 2 *R*e (-λt) *t
wherein I is (t) Representing the load current function, G (t) Represents the closing function of the switching device, H (t) Ambient temperature function, S (t) Device loss function, I 0 The amplitude, t, the current moment, R, the current resistance, ρ, the resistivity and L are expressed Breaking of the wire Indicating the closing length of the circuit breaker, L Knife Represents the closing length of the grounding switch, L Partition board Indicating the closing length of the isolating switch, L Total (S) The total length of the switch is represented, A represents the cross-sectional area of the switch, m represents the equivalent of ambient gas at the moment, c represents the specific heat capacity, and lambda represents the attenuation coefficient.
7. The method for automatically and sequentially controlling the isolating switch power supply and the body according to claim 6, wherein: the finding the problem to solve includes,
when 3300< P is less than or equal to 6500, judging that the load current condition and the environmental temperature condition are abnormal, carrying out on-site inspection and checking by an operator, carrying out temperature measurement by different temperature measuring devices, comparing the temperature measurement results of the two temperature measuring devices, determining whether the isolating switch is in place, checking the real-time load condition of the device, checking the accuracy of the infrared temperature measuring device if the relative difference between the two temperature measuring devices exceeds a preset threshold value, if the on-site real-time temperature is higher than 80 ℃ and the isolating switch is in place, informing an maintainer to carry out equipment maintenance in combination with a power failure plan, if the on-site real-time temperature is higher than 80 ℃ and the isolating switch is not in place, informing a dispatcher to arrange the power failure of the device, carrying out on-site manual operation on-site switching on the isolating switch, detecting the temperature change in real time after the operating personnel is on-site on the isolating switch, stopping operation to enable the device to normally run if the temperature is lower than or equal to 80 ℃, and checking the condition of the switching device and the switching contact if the temperature is still higher than 80 ℃;
when P >6500, judging that the condition of the switch equipment and the condition of the switch contact are abnormal, informing a dispatcher, stopping power supply of the dispatching emergency equipment by the dispatcher, manually operating the isolating switch by the operator, ensuring that the moving contact and the fixed contact of the isolating switch are fully contacted, detecting temperature change in real time after switching on, stopping operation to ensure that the equipment normally operates if the temperature is less than or equal to 80 ℃, removing rust on the contact part of the moving contact and the fixed contact of the switch equipment if the temperature is still greater than 80 ℃, connecting the contacts to detect temperature change in real time, stopping operation to ensure that the equipment normally operates if the temperature is less than or equal to 80 ℃, and checking the load current condition and the environmental temperature condition of the equipment if the temperature is still greater than 80 ℃;
if the switch equipment condition, the switch contact condition, the load current condition and the environment temperature condition are all in normal states, acquiring motor running current and torque force information;
when Id > Izd or Nd > Nzd, an abnormal alarm of the operation parameters of the output motor is sent out, and the transmission mechanism controlled by the isolating switch is checked by the intervention of a maintenance team in combination with alarm information;
when Id is less than or equal to Izd and Nd is less than or equal to Nzd, a problem occurs in the system is reported to the upper level, and a system dispatching technician is mediated to overhaul the system;
where Id represents the run-time motor current, izd represents the device set run current, nd represents the run-time motor torque force, and Nzd represents the device set run torque force.
8. A system employing a method of automatically controlling an isolated switching power supply and body in sequence as claimed in claims 1 to 7, characterized in that: the system comprises a protection measurement and control device, a central processing unit and a detection terminal;
the protection measurement and control device is used for receiving the control command, and after the upper level sends out the control command, the protection measurement and control device receives the control command;
the central processing unit is used for judging information and executing a strategy, comparing the gate information of the switching equipment with preset conditions to judge the condition and implement corresponding actions, judging the temperature condition of the equipment through temperature information, if no problem exists, operating normally, if the problem exists, carrying out corresponding measures, and finding out the problem to solve through a judging model;
the detection terminal is used for detecting equipment information, and the monitoring terminal collects imaging information of the position of the isolating switch, equipment temperature information, resistance and switch equipment closing length information and motor running current and torque force information.
9. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that: the steps of a method for automatically and sequentially controlling an isolated switching power supply and an entity according to any one of claims 1 to 7 are realized when the processor executes the computer program.
10. A computer-readable storage medium having stored thereon a computer program, characterized by: the computer program, when executed by a processor, implements the steps of a method of automatically controlling a power supply and an ontology of an isolating switch in sequence according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310942464.3A CN117277550A (en) | 2023-07-30 | 2023-07-30 | Method and system for automatically and sequentially controlling isolating switch power supply and body |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310942464.3A CN117277550A (en) | 2023-07-30 | 2023-07-30 | Method and system for automatically and sequentially controlling isolating switch power supply and body |
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| CN117277550A true CN117277550A (en) | 2023-12-22 |
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| CN202310942464.3A Pending CN117277550A (en) | 2023-07-30 | 2023-07-30 | Method and system for automatically and sequentially controlling isolating switch power supply and body |
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- 2023-07-30 CN CN202310942464.3A patent/CN117277550A/en active Pending
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