CN111223271A - Electric shock protection device and method for power system - Google Patents
Electric shock protection device and method for power system Download PDFInfo
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- CN111223271A CN111223271A CN202010124421.0A CN202010124421A CN111223271A CN 111223271 A CN111223271 A CN 111223271A CN 202010124421 A CN202010124421 A CN 202010124421A CN 111223271 A CN111223271 A CN 111223271A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
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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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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/0202—Child monitoring systems using a transmitter-receiver system carried by the parent and the child
- G08B21/0233—System arrangements with pre-alarms, e.g. when a first distance is exceeded
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Abstract
An electric power system protection against electric shock device and method, the device comprising: the device comprises a distance measurement module, a voltage measurement module, a processing unit, an early warning module and an approaching prevention module. The distance measurement module monitors the invader to obtain a real-time distance value between the invader and the device and a voltage value of the power system monitored by the voltage measurement module; the processing unit judges a preset threshold section where the distance value is located according to the safety distance database, then sends different command signals, and respectively controls the early warning module to send out an early warning signal and starts the approach prevention module to work. The device can be timely when having the invading thing to be close to report to the police and prevent to continue to be close to, have high-efficient, intelligent, characteristics that factor of safety is high.
Description
Technical Field
The invention belongs to the technical field of electric power system safety protection, and particularly relates to an electric shock protection device and method for an electric power system.
Background
In recent years, with the rapid development of power grids, power construction and maintenance become important means for ensuring the safe operation and stable power supply of the power grids. Live working is often required in power construction and maintenance, and safe operation is very important, which presents a serious challenge to operators.
In the safety work rules of the power industry, the distance between an operator and a charged body is specified by a 'safety distance', and a strict operation flow is specified to ensure the operation safety. In actual operation, the identification of the safety distance is mainly determined by the guardian and the operator through experience and visual inspection, so that the judgment result of the distance is easily different from the actual safety distance, and the safety of the operator cannot be ensured. On the other hand, the operator may miss the safety distance due to violation, negligence, incorrect identification of the equipment, and abnormality or failure of the equipment. In addition, the general public outside the power system is not necessarily aware of the safety distance from the charged body, and is also prone to personal injury and casualty accidents.
The operation flow is strictly regulated by the safety regulations, and obviously, the electric shock accidents of the power system are difficult to completely stop and prevent. Therefore, it is necessary to improve the safety level of power generation by scientific and intelligent means while strictly requiring personnel to comply with safety regulations.
Disclosure of Invention
The invention provides an electric shock protection device and method for an electric power system, which aim to solve the problem of electric shock accidents of the electric power system.
According to a first aspect of embodiments of the present invention, there is provided an electric power system protection device against electric shock, the device comprising
The device comprises a distance measurement module, a voltage measurement module, a processing unit, an early warning module and an approaching prevention module;
the distance measurement module is used for monitoring an invader, acquiring a real-time distance value between the invader and the distance measurement module and transmitting the distance to the processing unit;
the voltage measuring module is connected with the processing unit and used for measuring the voltage value of the power system monitored by the device and transmitting the voltage value to the processing unit;
the processing unit is internally provided with a safe distance database and is used for receiving the distance value and the voltage value, judging a preset threshold section where the distance value is located according to the safe distance database and sending a command signal, wherein when the distance value is smaller than or equal to a preset trigger distance and larger than the safe distance, a first command signal is sent, when the distance value is smaller than or equal to the safe distance and larger than a preset power-off distance, a second command signal is sent, and when the distance value is smaller than or equal to the preset power-off distance, a third command signal is sent;
the early warning module is connected with the processing unit and used for sending out an early warning signal and displaying warning information according to the first command signal, the second command signal and the third command signal;
and the anti-approach module is connected with the processing unit and used for starting according to the third command signal and preventing an invader from further approaching the power system.
Preferably, the device further comprises a communication module, connected to the processing unit, for communicatively connecting the processing unit to a remote center of the power system.
Preferably, the processing unit is further provided with a map database therein.
Preferably, the early warning module includes:
an alarm speaker for sounding an alarm;
and the electronic warning board is used for displaying warning information and map information.
Preferably, the relationship between the trigger distance, the safety distance and the power-off distance is as follows: trigger distance > safety distance > outage distance.
Preferably, after the anti-proximity module starts to operate, when the distance value is greater than the safe distance, the processing unit is further configured to:
a fourth command signal is issued.
Preferably, the anti-proximity module stops operating according to the fourth command signal.
According to a second aspect of the embodiments of the present invention, there is provided a method for protecting an electric power system from electric shock, the method including:
monitoring an invader and acquiring a real-time distance value S between the invader and the ranging module by using the ranging module;
judging whether the S is less than or equal to a preset trigger distance S0 by using a processing unit;
if said S is greater than said S0, maintaining a monitoring state;
if the S is less than or equal to the S0, triggering a voltage measuring module to measure the voltage value of the power system;
judging whether the voltage value is zero or not by using a processing unit;
if the voltage value is zero, the prompting device on the safety warning board is not electrified;
if the voltage value is not zero, querying a safe distance database, and acquiring a power regulation safe distance S1 corresponding to the voltage value and a set power-off distance S2;
comparing, with a processing unit, the magnitudes of the S0, S1, and S2:
if S1 is larger than S0, the processing unit sends a first command signal, and according to the first command signal, the early warning module sends out an alarm sound and prompts that the equipment is electrified;
if S2 is larger than S1, the processing unit sends a second command signal, and according to the second command signal, the early warning module sends out an alarm sound and prompts that the distance is smaller than the safety distance;
and if S is less than or equal to S2, the processing unit sends a third command signal, the approach prevention module is started according to the third command signal, and the early warning module sends out an alarm sound and prompts that serious electric shock danger information exists.
Preferably, after the anti-access module starts to work, the method further comprises:
judging whether the distance value is greater than the safe distance by using the processing unit;
if the distance value is greater than the safety distance, the processing unit sends a fourth command signal, and the approach prevention module stops working according to the fourth command signal;
the distance value is not greater than the safety distance, and the anti-approach module keeps a starting working state.
Preferably, after judging that the result of S2 < S.ltoreq.S 1 or S.ltoreq.S 2 is obtained, the method further includes:
and reporting the event to a remote center through a communication module.
Based on the embodiment, the device and the method for electric shock protection of the power system provided by the embodiment of the invention have the advantages that the device monitors an invader through the ranging module, obtains a real-time distance value between the invader and the ranging module, and transmits the real-time distance value to the processing unit; the voltage measuring module measures a voltage value of the power system monitored by the device and transmits the voltage value to the processing unit; a safe distance database is arranged in the processing unit, a preset threshold section where the distance value is located is judged according to the safe distance database, and then a command signal is sent out; when the distance value is smaller than or equal to the triggering distance and larger than the safety distance, a first command signal is sent, when the distance value is smaller than or equal to the safety distance and larger than a preset power-off threshold value, a second command signal is sent, and when the distance value is smaller than or equal to the preset power-off threshold value, a third command signal is sent; the early warning module sends out early warning signals and display warning information according to the first command signal, the second command signal and the third command signal to remind an invader of electric shock danger; the anti-approach module is started according to the third command signal, so that electric shock accidents are avoided. Therefore, the invention realizes the monitoring, early warning and anti-approach protection of the invader entering the power system, effectively solves the problems that the operation flow is strictly regulated by the safety regulation and the electric shock accident of the power system is difficult to completely stop and prevent, and has the characteristics of high efficiency, intelligence and high safety factor.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a basic structure of an electric shock protection apparatus for an electric power system according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of an electric shock protection method for an electric power system according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a schematic diagram of a basic structure of an electric shock protection device for an electric power system according to an embodiment of the present invention. As shown in fig. 1, the protection device includes a distance measuring module 1, a voltage measuring module 2, a processing unit 3, an early warning module 4, an approach prevention module 5, and a communication module 6.
Specifically, the distance measuring module 1 is connected to the processing unit 3, and is configured to monitor an intruding object, obtain a real-time distance value between the intruding object and the distance measuring module, and transmit the distance value to the processing unit 3. The distance measurement module 1 monitors the monitoring range in real time, and when an invader enters the monitoring range of the distance measurement module 1, the distance measurement module 1 acquires a real-time distance value between the invader and the distance measurement module, and then transmits the detected distance data to the processing unit 3.
And the voltage measuring module 2 is connected with the processing unit 3 and is used for measuring the voltage value of the power system monitored by the device and transmitting the voltage value to the processing unit 3. The safe distance of the power system corresponds to the voltage value of the power system one by one, so that the voltage value of the current power system needs to be measured when the safe distance of the power system is determined, and the accurate safe distance can be obtained according to the current voltage value.
The processing unit 3 is internally provided with a safe distance database and a map database. The safe distance database comprises safe distances specified by safe working rules and also comprises a preset outage distance threshold; the map database contains the topography surrounding the power system and the identification of the hazardous area. The processing unit 3 is configured to receive a real-time distance value between the intruding object and the ranging module 1 obtained by the ranging module 1 and a current voltage value of the power system obtained by the voltage measuring module 2, determine a preset threshold section where the real-time distance value is located according to the safety distance database, and send a command signal, where a first command signal is sent when an actual distance value of the intruding object is less than or equal to the trigger distance and is greater than the safety distance, a second command signal is sent when the actual distance value of the intruding object is less than or equal to the safety distance and is greater than the preset power-off distance threshold, and a third command signal is sent when the actual distance value of the intruding object is less than or equal to the preset power-off distance threshold. Wherein, the triggering distance is larger than the safety distance and is larger than the power-off distance.
And the early warning module 4 is connected with the processing unit 3 and is used for sending out early warning signals and displaying warning information according to the first command signal, the second command signal and the third command signal sent out by the processing unit 3. The early warning module 4 comprises a warning loudspeaker and an electronic warning board, wherein the warning loudspeaker is used for emitting warning sound, and the electronic warning board is used for displaying warning information. The alarm loudspeaker gives out alarm sound and the electronic warning board displays alarm information to remind an invader to enter a dangerous area, so that accidents can be effectively avoided.
The anti-proximity module 5 is connected to the processing unit 3 and is configured to start operation according to a third command signal issued by the processing unit 3. When an invader approaches, although the early warning module 4 sends out alarm sound twice to remind the invader to enter, the invader is likely to not receive the reminding due to the complex environment and terrain, or the invader does not correctly leave the scene after receiving the reminding, so that the electric shock danger is not relieved, the invader is closer to a hazard source, and at the moment, emergency measures are required to avoid the electric shock danger. The anti-approach module 5 is mainly facilities such as fences or iron nets arranged around the power system, the facilities are in a closed state under normal conditions, when an invader approaches, the anti-approach module starts to work to prevent the invader from further approaching a danger source, and electric shock danger can be effectively avoided.
Further, when an early warning or power failure event occurs in the field of the power system, a remote center 7 is required to timely acquire event information and timely process the event information, a communication module 6 is further arranged in the embodiment, the communication module 6 is connected with the processing unit 3 and used for connecting the processing unit 3 and the remote center 7 of the power system in a communication mode, and the alarm information of the accident field is transmitted to the remote center 7 through the communication module 6. The arrangement of the communication module 6 enables the staff in the remote center 7 to acquire and process the event information in time, and the working efficiency of the staff in the remote center 7 can be effectively improved.
In addition, if the working state is maintained or the working personnel stops working after the anti-access module 5 is started, the service life of the anti-access module 5 is reduced and the investment is increased. In order to reduce the loss of the anti-access module 5 as much as possible, the processing unit 3 of the present embodiment is further configured to: when the power system is powered off and the distance value between the invader and the distance measuring module 1 is greater than the safe distance, the processing unit 3 sends out a fourth command signal. The anti-proximity module 5 stops operating according to the fourth command signal. Therefore, the device is provided with the action of automatically recognizing and stopping work after the anti-access module 5 is started, so that the pressure of workers can be reduced, the working life of the anti-access module 5 is prolonged, and the investment is reduced.
In order to solve the problem, the embodiment of the invention also arranges a map database in the processing unit 3, wherein the map database mainly provides information such as site landform, route and the like. When the early warning module 4 is triggered to send out alarm sound and display alarm information, the electronic display board of the early warning module 4 displays map information, displays the position of an invader and provides a route leaving a dangerous area. The map information can effectively solve the problem that the invader can not effectively leave the dangerous area, improve the leaving speed, reduce the time of danger and the like.
Fig. 2 is a schematic flow chart of an electric shock protection method for an electric power system according to an embodiment of the present invention. As shown in fig. 2, the protection method includes the steps of:
s01: and monitoring the invader and acquiring a real-time distance value S between the invader and the device by using the distance measuring module.
The distance measurement module identifies and monitors the invader in the monitoring range in real time, acquires the real-time distance value S between the invader and the device when the invader enters the monitoring range, and transmits the real-time distance S to the processing unit.
S02: with the processing unit, it is determined whether S is less than or equal to a preset trigger distance S0.
The triggering distance S0 is preset in the processing unit, when the invader enters the monitoring range of the distance measuring module, the distance measuring module starts monitoring and real-time distance measuring of the invader, if the real-time distance value S is smaller than or equal to the preset triggering distance S0, the triggering device carries out the step S04, and if S is larger than S0, the step S03 is carried out.
S03: if S is greater than S0, the monitoring state is maintained.
S04: and if the S is less than or equal to S0, triggering the voltage measuring module to measure the voltage value of the power system.
The safety distance corresponds to the voltage value of the power system, and therefore the voltage value of the power system needs to be measured. And if the distance value S between the invader and the distance measuring module is smaller than or equal to the triggering distance S0, the invader enters the dangerous area, and the voltage value of the power system is measured by the triggering voltage measuring module.
S05: and judging whether the voltage value is zero or not by using the processing unit.
And after receiving the voltage value transmitted by the voltage measuring module, the processing unit judges whether the voltage value is zero or not. If zero, step S06 is performed, and if not zero, step S07 is performed.
S06: and information indicating that the equipment is not electrified is arranged on the safety warning board.
If the voltage value of the power system is zero, the device is not electrified, information that the device is not electrified is displayed on the safety warning board, and the staff can continue to work.
S07: and querying a safe distance database, and acquiring the power regulation safe distance S1 corresponding to the voltage value and the set power-off distance S2.
If the voltage value of the power system is not zero, it indicates that the device is charged, and it needs to continuously determine whether the intruder is dangerous to get an electric shock, so the safe distance database is queried, the power regulation safe distance S1 corresponding to the voltage value and the set power-off distance S2 are obtained, and then step S08 is executed.
S08: with the processing unit, the sizes of S and S0, S1, and S2 are compared.
The processing unit compares the size of S with that of S0, S1 and S2 to judge the threshold range of S, namely the degree of electric shock hazard of the position of the invader. If S1 < S ≦ S0, perform step S09; if S2 < S ≦ S1, perform step S010; if S is less than or equal to S2, step S011 is executed.
S09: the processing unit sends out a first command signal, and according to the first command signal, the early warning module sends out warning sound and prompts that the equipment is electrified.
If S1 is more than S and less than or equal to S0, the situation that the invader enters the dangerous range is shown, but the actual distance is more than the safe distance, and the electric shock danger degree is lower. At the moment, the processing unit sends out a first command signal, an alarm loudspeaker of the early warning module sends out warning sound according to the first command signal, and meanwhile, the electronic warning board of the early warning module prompts that equipment is electrified and prompts a voltage value, S1 and S. The alarm speaker emits an alarm sound to remind the intruder of paying attention. The electronic warning board is provided with the electrified prompting device, and prompts a voltage value, S1 and S, so that the danger of the invader at the moment can be prompted, and the invader can be prompted to effectively avoid a dangerous area.
S010: the processing unit sends out a second command signal, and according to the second command signal, the early warning module sends out warning sound and prompts that the distance is smaller than the safety distance.
If S2 is more than S and less than or equal to S1, the situation shows that the invader crosses the safety distance and enters the range with electric shock danger, but the actual distance is more than the power-off distance, and the electric shock danger degree is higher. At the moment, the processing unit sends out a second command signal, and according to the second command signal, the alarm loudspeaker of the early warning module sends out warning sound, and meanwhile, the electronic warning board of the early warning module is prompted to be smaller than a safety distance and to prompt a voltage value, S1 and S. At this time, the alarm speaker emits a warning sound which is sharper and louder than the warning sound emitted at step S09 to warn that the intruder has entered the high risk area. The electronic warning board prompts that the distance is smaller than the safety distance, prompts the voltage value, S1 and S, can prompt the danger and the current position of the invader, and can prompt the invader to effectively leave the dangerous area.
S011: the processing unit sends out a third command signal, the approach prevention module is started according to the third command signal, and the early warning module sends out warning sound and prompts that serious electric shock danger exists.
If S is less than or equal to S2, the situation shows that the invader has crossed the power-off distance and enters a high-risk area, and the electric shock risk is extremely high. At the moment, the processing unit sends out a third command signal, the approach prevention module is started according to the third command signal, the alarm loudspeaker of the early warning module sends out warning sound, meanwhile, the electronic warning board of the early warning module is used for indicating that serious electric shock danger exists, and voltage values, S1 and S are prompted. Because the risk of electric shock is extremely high, the anti-access module is activated to avoid the occurrence of electric shock accidents. The warning sound emitted from the alarm speaker is sharper and louder than the warning sounds emitted from steps S09 and S010 to warn that an intruder has entered a high-risk area. The electronic warning board prompts the voltage value, S1 and S, so that the intruder can be reminded of effectively leaving the dangerous area.
S012: and judging whether the distance value is greater than the safe distance or not by using the processing unit.
And after the power system is powered off, judging whether the distance value is greater than the safe distance by using the processing unit. If the distance value is greater than the safety distance, executing step S013; if the distance value is not greater than the safety distance, step S014 is performed.
S013: the processing unit sends out a fourth command signal, and the anti-approach module stops working according to the fourth command signal.
And if the distance value is greater than the safety distance, the intrusion object is shown to leave the dangerous area, the processing unit sends out a fourth command signal, and the anti-approach module stops working according to the fourth command signal.
S014: the power system remains in the powered off state.
And if the distance value is not greater than the safety distance, the intrusion object does not leave the dangerous area, and the anti-access module keeps the starting working state.
S015: and reporting the event to a remote center through a communication module.
Further, after the S1 or S2 result that S2 is greater than or equal to S is judged and obtained and the corresponding action is executed, the event is reported to the remote center through the communication module, so that the remote center can conveniently and timely obtain the event information of the power system site.
The embodiments in this specification are described in a progressive manner. The same and similar parts among the various embodiments can be mutually referred, and each embodiment focuses on the differences from the other embodiments.
Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.
It should be noted that, unless otherwise specified and limited, the terms "connected" and "connected" in this specification should be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the relevant art according to specific situations. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a circuit structure, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, the presence of an element identified by the phrase "comprising an … …" does not exclude the presence of additional like elements in the article or device comprising the element. In addition, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.
Claims (10)
1. An electric shock protection device of a power system is characterized by comprising a distance measurement module, a voltage measurement module, a processing unit, an early warning module and an anti-approach module;
the distance measurement module is used for monitoring an invader, acquiring a real-time distance value between the invader and the distance measurement module and transmitting the distance to the processing unit;
the voltage measuring module is connected with the processing unit and used for measuring the voltage value of the power system monitored by the device and transmitting the voltage value to the processing unit;
the processing unit is internally provided with a safe distance database and is used for receiving the distance value and the voltage value, judging a preset threshold section where the distance value is located according to the safe distance database and sending a command signal, wherein when the distance value is smaller than or equal to a preset trigger distance and larger than the safe distance, a first command signal is sent, when the distance value is smaller than or equal to the safe distance and larger than a preset power-off distance, a second command signal is sent, and when the distance value is smaller than or equal to the preset power-off distance, a third command signal is sent;
the early warning module is connected with the processing unit and used for sending out an early warning signal and displaying warning information according to the first command signal, the second command signal and the third command signal;
and the anti-approach module is connected with the processing unit and used for starting according to the third command signal and preventing an invader from further approaching the power system.
2. The electrical shock protection device of claim 1, further comprising a communication module coupled to the processing unit for communicatively coupling the processing unit to a remote center of the electrical power system.
3. The electrical power system protection device of claim 1, wherein the processing unit further comprises a map database.
4. The electrical shock protection device of claim 3, wherein the early warning module comprises:
an alarm speaker for sounding an alarm;
and the electronic warning board is used for displaying warning information and map information.
5. The electrical power system protection device of claim 4, wherein the relationship between the trigger distance, the safety distance, and the power outage distance is: trigger distance > safety distance > outage distance.
6. The electrical shock protection device of claim 1, wherein after the anti-access module starts operating, when the distance value is greater than the safe distance, the processing unit is further configured to:
a fourth command signal is issued.
7. The electrical shock protection device of claim 6, wherein the anti-proximity module is disabled based on the fourth command signal.
8. A method for protecting a power system from electric shock, the method comprising the steps of using the device of any one of claims 1-7 to protect the power system from electric shock:
monitoring an invader and acquiring a real-time distance value S between the invader and the ranging module by using the ranging module;
judging whether the S is less than or equal to a preset trigger distance S0 by using a processing unit;
if said S is greater than said S0, maintaining a monitoring state;
if the S is less than or equal to the S0, triggering a voltage measuring module to measure the voltage value of the power system;
judging whether the voltage value is zero or not by using a processing unit;
if the voltage value is zero, the prompting device on the safety warning board is not electrified;
if the voltage value is not zero, querying a safe distance database, and acquiring a power regulation safe distance S1 corresponding to the voltage value and a set power-off distance S2;
comparing, with a processing unit, the magnitudes of the S0, S1, and S2:
if S1 is larger than S0, the processing unit sends a first command signal, and according to the first command signal, the early warning module sends out an alarm sound and prompts that the equipment is electrified;
if S2 is larger than S1, the processing unit sends a second command signal, and according to the second command signal, the early warning module sends out an alarm sound and prompts that the distance is smaller than the safety distance;
and if S is less than or equal to S2, the processing unit sends a third command signal, the approach prevention module is started according to the third command signal, and the early warning module sends out an alarm sound and prompts that serious electric shock danger information exists.
9. The method of claim 8, wherein after the anti-access module is activated, the method further comprises:
judging whether the distance value is greater than the safe distance by using the processing unit;
if the distance value is greater than the safety distance, the processing unit sends a fourth command signal, and the approach prevention module stops working according to the fourth command signal;
the distance value is not greater than the safety distance, and the anti-approach module keeps a starting working state.
10. The method of claim 8, wherein after determining that the S2 < S ≦ S1 or S ≦ S2 result is obtained, the method further comprises:
and reporting the event to a remote center through a communication module.
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| CN202010124421.0A CN111223271A (en) | 2020-02-27 | 2020-02-27 | Electric shock protection device and method for power system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115457746A (en) * | 2022-09-22 | 2022-12-09 | 国网四川雅安电力（集团）股份有限公司 | Dynamic partition warning system and warning method for power protection pressing plate |
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2020
- 2020-02-27 CN CN202010124421.0A patent/CN111223271A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115457746A (en) * | 2022-09-22 | 2022-12-09 | 国网四川雅安电力（集团）股份有限公司 | Dynamic partition warning system and warning method for power protection pressing plate |
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Application publication date: 20200602 |