CN112186507B - One-button sequential control method for intelligent switch cabinet - Google Patents
One-button sequential control method for intelligent switch cabinet Download PDFInfo
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- CN112186507B CN112186507B CN202010994437.7A CN202010994437A CN112186507B CN 112186507 B CN112186507 B CN 112186507B CN 202010994437 A CN202010994437 A CN 202010994437A CN 112186507 B CN112186507 B CN 112186507B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/24—Circuit arrangements for boards or switchyards
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/02—Details
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B15/00—Supervisory desks or panels for centralised control or display
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- 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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention relates to the technical field of switch equipment, in particular to a one-key sequential control method for an intelligent switch cabinet; the system comprises a step S1 of signal acquisition: acquiring the insertion depth, the flowing current value, the pressure and the temperature of a plum blossom contact of the circuit breaker; step S2, signal comparison: comparing the insertion depth of the plum blossom-shaped contact of the circuit breaker with the set value of the depth, and comparing the value of the current flowing through the circuit breaker with the set value of the current; step S3, driving telemetry: when the insertion depth of the plum blossom contact of the circuit breaker is greater than a depth set value, driving a working position remote measurement criterion of a circuit breaker handcart; when the current value flowing through the circuit breaker is larger than the current set value, driving a remote measuring criterion of the closing state of the circuit breaker; s4, judging in place: selecting a normally open signal of an auxiliary point in a closing state of the circuit breaker as a position remote signaling criterion; the method adopts 'position remote signaling criterion + remote measuring criterion', and judges whether the equipment is operated in place or not by the corresponding change of the indication of two non-identical principles.
Description
Technical Field
The invention relates to the technical field of switch equipment, in particular to a one-key sequential control method for an intelligent switch cabinet.
Background
The switch device is one of the important components of electric energy distribution, and plays an important role in the modern power grid engineering construction. The medium and low voltage switch equipment is widely applied to the field of power supply and distribution, and is important equipment for controlling power equipment, controlling circuit opening and closing and protecting in a power system. The safety, stability and reliability of its operation will directly affect the quality of the consumer power supply.
In recent years, the number of transformer substations which are put into use is increased year by year, the complexity of equipment operation in the transformer substations is increased day by day, the workload of related operation and maintenance personnel is increased, and the existing control method cannot meet the requirements of power grid development and operation and maintenance. Therefore, in order to ensure the normal operation of the switch cabinet and the power supply quality of users, the real-time monitoring and intelligent control transformation of the operation state of the switch cabinet are imperative.
The intelligent switch cabinet one-button sequence control technology can automatically check the running state of equipment before running, the switch cabinet is intelligent in operation, the working strength of maintenance personnel is reduced, and the intelligent switch cabinet one-button sequence control technology has profound and important significance for stable running of substation equipment.
The one-key sequential control is an operation mode of the switching operation of the transformer substation, and can realize the prefabrication of operation item software, the modular construction of operation tasks, the automatic judgment of equipment states, the intelligent check of error-proof interlocking, the one-key starting of operation steps and the automatic sequential execution of operation processes. When the double confirmation is that the equipment is operated remotely, at least two different principles or different source indications are correspondingly changed, and all the indications are correspondingly changed at the same time, so that the equipment can be confirmed to be operated in place.
Disclosure of Invention
The invention aims to provide a one-key sequential control method for an intelligent switch cabinet, which adopts 'position remote signaling criterion + remote measurement criterion' and judges whether equipment is operated in place or not by corresponding change of two indications with different principles.
In order to solve the technical problems, the invention provides the following technical scheme:
a one-button sequential control method for an intelligent switch cabinet comprises the following steps:
s1, signal acquisition: acquiring the insertion depth, the flowing current value, the pressure and the temperature of a plum blossom contact of the circuit breaker;
step S2, signal comparison: comparing the insertion depth of the plum blossom contact of the circuit breaker with the set value of the depth, and comparing the value of the current flowing through the circuit breaker with the set value of the current;
step S3, driving telemetry: when the insertion depth of the plum blossom contact of the circuit breaker is greater than a depth set value, driving a remote measurement criterion of the working position of the handcart; when the current value flowing through the circuit breaker is larger than the current set value, driving a remote measurement criterion of the closing state of the circuit breaker;
s4, judging in place: selecting a normally open signal of an auxiliary point in a closing state of the circuit breaker as a position remote signaling criterion, and determining 'the position remote signaling criterion + a remote measuring criterion' when the circuit breaker is opened and closed; a normally open signal of an auxiliary point of a working position of a circuit breaker handcart is selected as a position remote signaling criterion, and the working position of the handcart confirms the 'position remote signaling criterion + remote measurement criterion'.
Further, the insertion depth of the plum blossom contact of the circuit breaker in the step S1 is collected through an infrared distance measuring module, and the method specifically comprises the following steps:
a1, measuring the distance from an infrared distance measurement module to a fixed contact copper bar;
and A2, calculating the insertion depth of the tulip contact according to the distance from the infrared distance measuring module to the fixed contact copper bar, the external dimension of the fixed contact and the installation position of the intelligent sensing ring.
Further, the current value that circuit breaker plum blossom contact flowed through passes through load perception module collection, specifically includes the following step:
b1, detecting an electromagnetic field intensity signal at a plum blossom contact of the circuit breaker;
and B2, calculating to obtain the current value flowing through the breaker according to the electromagnetic field intensity signal.
Further, the pressure of circuit breaker plum blossom contact is gathered through pressure perception module, specifically includes following step:
c1, detecting a pressure analog signal of the plum blossom contact spring;
and C2, converting the pressure analog signal into a pressure value.
Further, the temperature of the plum blossom contact of the circuit breaker is collected through a temperature collection module, and the method specifically comprises the following steps:
d1, detecting a temperature signal of the tulip contact;
and D2, converting the temperature signal into a temperature value.
Further, step S1 carries out signal acquisition through intelligent perception ring, intelligent perception ring includes equipment power module, system host system module, infrared ranging module, load perception module, pressure perception module, temperature acquisition module, wireless communication module, system host system module is used for gathering the insertion depth of circuit breaker plum blossom contact, the current value that flows through, pressure, temperature pass through wireless communication module carries to intelligent subassembly.
Furthermore, the intelligent sensing ring is installed on a plum blossom contact of the circuit breaker.
Further, step S2 and step S3 carry out signal comparison and drive telemetering measurement through intelligent subassembly, intelligent subassembly is with circuit breaker switching on/off state, the hard contact signal transmission of circuit breaker handcart operating position to a key in the same direction as accuse host computer.
Furthermore, the intelligent assembly comprises a handcart working position relay, a breaker closing state relay, a comparison unit and a driving unit, and when the comparison unit judges that the insertion depth of the plum blossom contact of the breaker is greater than a depth set value, the driving unit drives the handcart working position relay to act; when the comparison unit judges that the current value flowing through the circuit breaker is larger than the current set value, the driving unit drives the circuit breaker to close the relay to act.
Compared with the prior art, the technical scheme has the following advantages:
the invention relates to a one-key sequential control method for an intelligent switch cabinet, which adopts 'position remote signaling criterion + remote measuring criterion' and judges whether equipment is operated in place or not by corresponding change of two indications with different principles.
Drawings
In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions in the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a structural block diagram of a one-button sequential control system of an intelligent switch cabinet according to the present invention;
FIG. 2 is an electrical schematic diagram of the current-taking circuit according to the present invention;
fig. 3 is a schematic block diagram of a load sensing module according to the present invention.
In the figure: 1. an intelligent sensing ring; 11. a device power supply module; 111. taking an electricity ring; 112. a power taking loop; 113. a super capacitor; 12. a system main control module; 13. an infrared distance measuring module; 131. an infrared distance measuring unit; 132. an insertion depth calculation unit; 14. a load sensing module; 141. a magnetoresistive element; 142. a load calculation unit; 15. a pressure sensing module; 151. a ceramic pressure sensor; 152. a pressure calculation unit; 16. a temperature acquisition module; 161. a temperature sensing element; 162. a temperature processing unit; 17. a wireless communication module; 2. an intelligent component; 21. a handcart working position relay; 22. a breaker closing state relay; 23. a comparison unit; 24. a drive unit; 3. a key sequence control host.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below. In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
Example 1
The invention provides a specific implementation mode of an intelligent switch cabinet one-button sequential control method, which comprises the following steps of:
step S1, signal acquisition: acquiring the insertion depth, the flowing current value, the pressure and the temperature of a plum blossom contact of the circuit breaker;
step S2, signal comparison: comparing the insertion depth of the plum blossom-shaped contact of the circuit breaker with the set value of the depth, and comparing the value of the current flowing through the circuit breaker with the set value of the current;
step S3, driving telemetry: when the insertion depth of the plum blossom contact of the circuit breaker is greater than a depth set value, driving a working position remote measurement criterion of a circuit breaker handcart; when the current value flowing through the tulip contact is larger than the current set value, driving a remote measurement criterion of the closing state of the circuit breaker;
s4, judging in place: selecting a normally open signal of an auxiliary point in a closing state of the circuit breaker as a position remote signaling criterion, and determining 'the position remote signaling criterion + a remote measuring criterion' when the circuit breaker is opened and closed; and selecting a normally open signal of an auxiliary point at the working position of the circuit breaker handcart as a position remote signaling criterion, and confirming the 'position remote signaling criterion + remote measurement criterion' data of the working position of the circuit breaker handcart.
As shown in fig. 1 to 3, the insertion depth of the tulip contact of the circuit breaker in step S1 is collected by the infrared ranging module 13, which specifically includes the following steps:
step A1, measuring the distance from an infrared distance measuring module 13 to a fixed contact copper bar;
and A2, calculating the insertion depth of the tulip contact according to the distance from the infrared distance measuring module 13 to the fixed contact copper bar, the external dimension of the fixed contact and the installation position of the intelligent sensing ring 1.
The current value that circuit breaker plum blossom contact flowed through passes through load perception module 14 and gathers, specifically includes the following steps:
b1, detecting an electromagnetic field intensity signal at a plum blossom contact of the circuit breaker;
and B2, calculating to obtain the current value flowing through the breaker according to the electromagnetic field intensity signal.
Wherein, the pressure of circuit breaker plum blossom contact is gathered through pressure perception module 15, specifically includes following step:
step C1, detecting a pressure analog signal of the tulip contact;
and C2, converting the pressure analog signal into a pressure value.
The circuit breaker plum blossom contact spring can be detected, and the accident caused by the aging of the spring can be early warned in advance.
The temperature of the plum blossom contact of the circuit breaker is collected through a temperature collecting module 16, and the method specifically comprises the following steps:
d1, detecting a temperature signal of the tulip contact;
and D2, converting the temperature signal into a temperature value.
The temperature of the circuit breaker can be detected, and the accident of temperature rise caused by aging can be early warned in advance.
Wherein, step S1 carries out signal acquisition through intelligent perception ring 1, intelligent perception ring 1 includes equipment power module 11, system host system 12, infrared ranging module 13, load perception module 14, pressure perception module 15, temperature acquisition module 16, wireless communication module 17, system host system 12 is used for gathering the insertion depth of circuit breaker plum blossom contact, the current value that flows through, pressure, temperature pass through wireless communication module 17 carries to intelligent subassembly 2.
By adopting the intelligent sensing ring 1, when a circuit breaker handcart enters and exits the switch cabinet or the circuit breaker is switched on and off, the real-time states of the handcart working position relay 21 and the circuit breaker switching-on state relay 22 are actively updated. The defect that the acquisition of one-key sequence control confirmation signals of the original switch cabinet needs to wait for the sequence control host to send sequence control instructions to start acquiring the second judgment data state is overcome.
The intelligent sensing ring 1 is installed on a plum blossom contact of the circuit breaker.
The switch cabinet can be moved out along with the circuit breaker handcart during maintenance, and daily maintenance is facilitated.
The step S2 and the step S3 are used for signal comparison and drive remote measurement through the intelligent assembly 2, and the intelligent assembly 2 transmits a circuit breaker switching-on/off state and a hard contact signal of a circuit breaker handcart working position to the one-key sequence control host 3.
The intelligent assembly 2 comprises a handcart working position relay 21, a breaker closing state relay 22, a comparison unit 23 and a driving unit 24, wherein when the comparison unit 23 judges that the insertion depth of a plum blossom contact of the breaker is greater than a depth set value, the driving unit 24 drives the handcart working position relay 21 to act; when the comparing unit 23 determines that the current value flowing through the circuit breaker is greater than the current set value, the driving unit 24 drives the circuit breaker closing state relay 22 to operate.
The one-key sequence control method for the intelligent switch cabinet can be realized through the one-key sequence control system for the intelligent switch cabinet. As shown in fig. 1-3, the intelligent switch cabinet one-key sequential control system comprises a one-key sequential control host 3, an intelligent component 2 and an intelligent sensing ring 1 which are sequentially connected, wherein the intelligent sensing ring 1 comprises an equipment power supply module 11, a system main control module 12, an infrared ranging module 13, a load sensing module 14, a pressure sensing module 15, a temperature acquisition module 16 and a wireless communication module 17, the infrared ranging module 13 is used for monitoring the insertion depth of a plum blossom contact of a circuit breaker, the load sensing module 14 is used for monitoring the current value flowing through the circuit breaker, the pressure sensing module 15 is used for monitoring the pressure of the circuit breaker, the temperature acquisition module 16 is used for monitoring the temperature of the circuit breaker, and the system main control module 12 is used for acquiring the insertion depth, the current value flowing through, the pressure and the temperature of the plum blossom contact of the circuit breaker and transmitting the insertion depth, the current value, the pressure and the temperature to the intelligent component 2 through the wireless communication module 17; the intelligent assembly 2 comprises a handcart working position relay 21, a breaker closing state relay 22, a comparison unit 23 and a driving unit 24, wherein the comparison unit 23 is used for comparing the insertion depth of a plum blossom contact of the breaker with a depth set value and comparing the current value flowing through the breaker with a current set value; when the insertion depth of the plum blossom contact of the circuit breaker is greater than a depth set value, the driving unit 24 is used for driving the handcart working position relay 21 to act; when the current value flowing through the tulip contact is greater than the current set value, the driving unit 24 is used for driving the breaker closing state relay 22 to act.
The device power supply module 11 is connected to the system main control module 12, and includes a power loop 111, a power loop 112, and a super capacitor 113.
Here, the voltage regulator tube D5 is powered on the power-taking circuit 112 at the instant of power-on to realize dual protection of start-up protection and short-circuit current surge for the power-taking circuit, and when the input voltage exceeds a set value of 6.2V, the voltage regulator tube D5 is directly turned on to short-circuit the subsequent stage circuit and protect the subsequent stage circuit from being damaged. When the starting input voltage is less than the set value and the circuit is normally started, and when the rectified small bus voltage exceeds the set value and is 4.48V, the capacitor C8 is connected into the circuit to further filter the rectified waveform; when the rectified small bus voltage exceeds a set value of 4.76V, the backup super capacitor is connected to a main power circuit; when the rectified small bus voltage exceeds a set value of 5.28V, Q8 is conducted, a charging loop before Q8 is in short circuit, a rear-stage circuit is powered by C7 and C8, and when the rectified small bus voltage is less than 5.28V and Q8 is cut off, the rectifying loop charges a subsequent circuit.
Wherein, the electricity taking ring 111 adopts permalloy material.
The permalloy is selected as a magnetic material and matched with the design of the unique power taking loop 112 of the invention, so that the functions of low-current power taking (minimum 5A starting), large-current protection technology and short-time short-circuit current impact prevention are realized.
The infrared ranging module 13 includes an infrared ranging unit 131 and an insertion depth calculating unit 132, which are connected in sequence, the infrared ranging unit 131 is configured to measure a distance from the intelligent sensing ring 1 to the fixed contact copper bar, and the insertion depth calculating unit 132 is configured to calculate an insertion depth of the tulip contact according to the distance from the intelligent sensing ring 1 to the fixed contact copper bar, an external dimension of the fixed contact, and an installation position of the intelligent sensing ring 1.
Here, the infrared ranging module 13 starts a signal:
1. a circuit breaker test position signal A and a working position signal B are defined, a falling edge signal A can be used as a starting signal of intelligent sensing ring distance measurement, and a rising edge of B and a signal B are in phase or delayed by 5s to be used as an ending signal of the intelligent sensing ring distance measurement.
2. If the signal that A & B is 1 appears, intelligent component 2 indicates that the circuit breaker is not in the correct position, delay 5S is used as the finishing signal of intelligent perception ring 1 ranging, the falling edge appears in the A & B signal, the rising edge of the B signal starts the starting signal of intelligent perception ring 1 ranging, and the rising edge of B and the B signal phase or delay 5S are used as the finishing signal of intelligent perception ring 1 ranging.
3. After the one-key sequence control host 3 sends a sequence control instruction, the infrared ranging module 13 starts a starting signal of the intelligent sensing ring 1 for ranging; and taking the phase or delay of 5s between the rising edge of B and the B signal as an end signal of the intelligent sensing ring 1 ranging.
The load sensing module 14 includes a magnetic resistance element 141 and a load calculating unit 142 connected in sequence, where the magnetic resistance element 141 is configured to detect an electromagnetic field strength signal, and the load calculating unit 142 is configured to calculate a current value flowing through the circuit breaker according to the electromagnetic field strength signal.
Here, the magneto-resistive element 141 detects an electromagnetic field strength signal according to a magneto-resistive effect. The magnetoresistance effect refers to a phenomenon that the resistance of some metal or semiconductor materials in a magnetic field increases along with the increase of the magnetic field, and like the hall effect, the magnetoresistance effect is also generated because carriers are subjected to lorentz force in the magnetic field. When the carrier reaches a steady state, the electric field force applied to the carriers at a certain speed is equal to the Lorentz force, the carriers are gathered at two ends to generate Hall electric fields, the carriers slower than the speed deflect towards the electric field force direction, and the carriers faster than the speed deflect towards the Lorentz force direction. This deflection leads to an increased drift path for the carriers. Alternatively, the number of carriers moving in the direction of the applied electric field decreases, thereby increasing the resistance, a phenomenon known as the magnetoresistance effect. The accuracy of the magnetoresistance effect measurement can reach 0.01%.
The pressure sensing module 15 includes a ceramic pressure sensor 151 and a pressure calculating unit 152, which are connected in sequence, wherein the ceramic pressure sensor 151 is used for detecting a pressure analog signal of the tulip contact spring, and the pressure calculating unit 152 is used for converting the pressure analog signal into a pressure value.
The temperature acquisition module 16 includes a temperature sensing element 161 and a temperature processing unit 162, which are connected in sequence, wherein the temperature sensing element 161 is used for detecting the temperature signal of the tulip contact, and the temperature processing unit 162 is used for converting the temperature signal into a temperature value.
Wherein, intelligence perception ring 1 installs on the plum blossom contact of circuit breaker.
The switch cabinet can be moved out along with the circuit breaker handcart during maintenance, and daily maintenance is facilitated.
The intelligent switch cabinet one-button sequential control system comprises the following working processes:
the infrared distance measuring module 13 monitors the insertion depth of the tulip contact, the load sensing module 14 monitors the current value flowing through the tulip contact, the pressure sensing module 15 monitors the pressure of the tulip contact, the temperature acquisition module 16 monitors the temperature of the tulip contact, and the system main control module 12 acquires the insertion depth, the flowing current value, the pressure and the temperature of the breaker tulip contact and transmits the insertion depth, the flowing current value, the pressure and the temperature to the intelligent assembly 2 through the wireless communication module 17; when the insertion depth of the plum blossom contact of the circuit breaker is greater than a depth set value, the intelligent assembly 2 drives the handcart working position relay 21 to act, and a remote measurement criterion is provided for the one-key sequence control host 3; when the current value flowing through the tulip contact is larger than the current set value, the intelligent assembly 2 drives the breaker closing state relay 22 to act, and telemetering criteria are provided for the one-key sequence control host 3.
The one-key sequence control host 3, the circuit breaker opening and closing confirmation 'position remote signaling criterion + remote measuring criterion': selecting a normally open signal of an auxiliary point in a closing state of the circuit breaker as a first criterion; the load sensing module 14 monitors the current value flowing through the tulip contact and drives the circuit breaker closing state relay 22 to drive an auxiliary contact normally open signal as a second criterion through the intelligent assembly 2. Confirming 'position remote signaling criterion + remote measuring criterion' of handcart working position: selecting a normally open signal of an auxiliary point of a working position of a circuit breaker as a first criterion; an infrared distance measuring module 13 monitors the insertion depth of the tulip contact and drives a handcart working position relay 21 auxiliary contact normally open signal through the intelligent assembly 2 to serve as a second criterion. The method adopts 'position remote signaling criterion + remote measuring criterion', and judges whether the equipment is operated in place or not by the corresponding change of the indication of two non-identical principles.
In conclusion, the intelligent switch cabinet one-button sequential control method adopts 'position remote signaling criterion + remote measuring criterion', and judges whether the equipment is operated in place or not by correspondingly changing the indications of two non-identical principles.
The intelligent switch cabinet one-button sequence control method provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the present invention and its core concepts. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, it is possible to make various improvements and modifications to the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (1)
1. The utility model provides an intelligent cubical switchboard one-button sequential control system which characterized in that: the intelligent sensing ring comprises an equipment power supply module, a system main control module, an infrared distance measuring module, a load sensing module, a pressure sensing module, a temperature collecting module and a wireless communication module, wherein the equipment power supply module, the system main control module, the infrared distance measuring module, the load sensing module, the pressure sensing module, the temperature collecting module and the wireless communication module are sequentially connected; the intelligent assembly comprises a handcart working position relay, a breaker closing state relay, a comparison unit and a driving unit, wherein the comparison unit is used for comparing the insertion depth and the depth set value of a breaker plum blossom contact and comparing the current value flowing through the breaker and the current set value; when the insertion depth of the plum blossom contact of the circuit breaker is greater than a depth set value, the driving unit is used for driving the handcart working position relay to act; when the current value flowing through the tulip contact is larger than the current set value, the driving unit is used for driving the breaker to close a relay to act; the equipment power supply module is connected with the system main control module and comprises a power taking ring, a power taking circuit and a super capacitor; the electricity taking ring is made of permalloy materials; the pressure sensing module comprises a ceramic pressure sensor and a pressure calculating unit which are sequentially connected, the ceramic pressure sensor is used for detecting a pressure analog signal of the plum blossom contact spring, and the pressure calculating unit is used for converting the pressure analog signal into a pressure value; the infrared distance measuring module comprises an infrared distance measuring unit and an insertion depth calculating unit which are sequentially connected, the infrared distance measuring unit is used for measuring the distance from the intelligent sensing ring to the fixed contact copper bar, and the insertion depth calculating unit is used for calculating the insertion depth of the tulip contact according to the distance from the intelligent sensing ring to the fixed contact copper bar, the external dimension of the fixed contact and the installation position of the intelligent sensing ring; the load sensing module comprises a magnetic resistance element and a load calculating unit which are sequentially connected, the magnetic resistance element is used for detecting an electromagnetic field intensity signal at the plum blossom contact, and the load calculating unit is used for calculating the value of a current flowing through the circuit breaker according to the electromagnetic field intensity signal; the temperature acquisition module comprises a temperature sensing element and a temperature processing unit which are sequentially connected, wherein the temperature sensing element is used for detecting a temperature signal of the tulip contact, and the temperature processing unit is used for converting the temperature signal into a temperature value; the intelligent sensing ring is arranged on a plum blossom contact of the circuit breaker;
the one-key sequence control host and the breaker opening and closing confirmation 'position remote signaling criterion + remote measuring criterion': selecting a normally open signal of an auxiliary point in a closing state of the circuit breaker as a first criterion; the current value that is flowed through by the plum blossom contact of load perception module monitoring drives circuit breaker switching-on state relay auxiliary contact normally open signal as the second criterion through intelligent subassembly, handcart operating position confirms "position remote signaling criterion + telemetering measurement criterion": selecting a normally open signal of an auxiliary point of a working position of a handcart of the circuit breaker as a first criterion; an infrared distance measuring module monitors the insertion depth of a tulip contact, and an intelligent assembly drives a handcart working position relay auxiliary contact normally open signal to serve as a second judgment data, and a position remote signaling criterion and a remote measuring criterion are adopted, so that whether equipment is operated in place or not is judged through corresponding changes of two indications of different principles;
by adopting the intelligent sensing ring, when a circuit breaker handcart enters and exits the switch cabinet or the circuit breaker is switched on and off, the real-time states of the handcart working position relay and the circuit breaker switching-on state relay are actively updated, and the defect that the conventional switch cabinet one-key sequence control confirmation signal acquisition needs to wait for the sequence control host to send a sequence control instruction to start acquiring a second judgment data state is overcome.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444652A (en) * | 2018-11-06 | 2019-03-08 | 珠海多监测科技有限公司 | State aware ring for high-tension switch cabinet contact |
| CN111478217A (en) * | 2020-04-08 | 2020-07-31 | 国网湖南省电力有限公司 | One-key sequential control support system for transformer substation switch cabinet and application method thereof |
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| CN111654108A (en) * | 2020-06-11 | 2020-09-11 | 国网陕西省电力公司宝鸡供电公司 | Remote control system of transformer substation operation and maintenance class for remote station and one-key sequence control method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109444652A (en) * | 2018-11-06 | 2019-03-08 | 珠海多监测科技有限公司 | State aware ring for high-tension switch cabinet contact |
| CN111478217A (en) * | 2020-04-08 | 2020-07-31 | 国网湖南省电力有限公司 | One-key sequential control support system for transformer substation switch cabinet and application method thereof |
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| "适应泛在物联的变电站智能化改造方法研究";李鑫;《中国优秀硕士学位论文全文数据库（电子期刊）工程科技Ⅱ辑》;20200229;C042-988 * |
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