CN111983297B - Instantaneous residual pressure detection method, device and equipment - Google Patents
Instantaneous residual pressure detection method, device and equipment Download PDFInfo
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- CN111983297B CN111983297B CN202010851490.1A CN202010851490A CN111983297B CN 111983297 B CN111983297 B CN 111983297B CN 202010851490 A CN202010851490 A CN 202010851490A CN 111983297 B CN111983297 B CN 111983297B
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2503—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques for measuring voltage only, e.g. digital volt meters (DVM's)
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Abstract
The application discloses a method for detecting instantaneous residual voltage, which comprises the steps of receiving an action signal, wherein the action signal comprises target circuit information; determining a corresponding residual pressure recording assembly according to the action signal; acquiring a residual voltage record signal from the residual voltage record assembly; determining whether historical residual voltage exists in a target circuit corresponding to the target circuit information according to the residual voltage record signal; and when the historical residual voltage exists in the target circuit, sending a locking signal to a locking assembly to reversely lock the target circuit, so as to finish the residual voltage detection of the target circuit. According to the application, the residual voltage recording assembly is arranged on the circuit, and whether residual voltage occurs in the circuit or not is judged through the residual voltage recording signal, so that the problem of reverse locking is solved by rapidly judging whether residual voltage exists in the circuit or not. The application also provides an instantaneous residual voltage detection device, equipment and a computer readable storage medium with the beneficial effects, and a residual voltage recording assembly.
Description
Technical Field
The present application relates to the field of circuit fault detection, and in particular, to a method, apparatus, device, and computer readable storage medium for detecting instantaneous residual voltage.
Background
At present, in the domestic power distribution automation field, the feeder automation technology is very rapidly developed, and in the feeder automation of an on-site reclosing mode, a power distribution terminal realizes reverse closing and locking by detecting instantaneous residual voltage, and the function is particularly critical. Residual voltage in a circuit can damage an electric element, if the residual voltage cannot be found in time and the cause of the residual voltage can be solved through fault investigation, the service life of a circuit can be greatly influenced, serious potential safety hazards can be caused over time, in order to furthest improve the reliability of power supply, fault and isolation fault areas are required to be positioned rapidly, but feeder terminals in some areas are not provided with a backup power supply or a terminal CPU (central processing unit) is excessively long in starting time, when the circuit has a short circuit fault, after the power fails, the terminal cannot detect residual voltage signals, and the next closing on a fault point cannot achieve fault isolation
In other words, how to solve the problem that the existing feeder automation technology cannot quickly determine whether the circuit has residual voltage, so as to complete the reverse locking logic function is a urgent problem for those skilled in the art.
Disclosure of Invention
The application aims to provide a method, a device, equipment and a computer readable storage medium for detecting instantaneous residual voltage, which are used for solving the problem that whether residual voltage exists in a circuit cannot be judged rapidly in the prior art, so that a reverse locking logic function is completed.
In order to solve the technical problems, the application provides an instantaneous residual voltage detection method, which comprises the following steps:
receiving an action signal, the action signal comprising target circuit information;
determining a corresponding residual pressure recording assembly according to the action signal;
acquiring a residual voltage record signal from the residual voltage record assembly;
determining whether historical residual voltage exists in a target circuit corresponding to the target circuit information according to the residual voltage record signal;
and when the historical residual voltage exists in the target circuit, sending a locking signal to a locking assembly to reversely lock the target circuit, so as to finish the residual voltage detection of the target circuit.
Optionally, in the method for detecting instantaneous residual pressure, the acquiring a residual pressure record signal from the residual pressure record component includes:
and acquiring a residual voltage record signal from the residual voltage record assembly, wherein the residual voltage record signal comprises residual voltage time information.
Optionally, in the method for detecting instantaneous residual pressure, after acquiring a residual pressure record signal from the residual pressure record component, the method further includes:
and sending the residual voltage record signal to a superior server for storage.
Optionally, in the method for detecting instantaneous residual voltage, after determining whether there is a historical residual voltage in the target circuit corresponding to the target circuit information according to the residual voltage record signal, the method further includes:
and when the historical residual voltage exists in the target circuit, sending a fault signal to an alarm terminal, so that the alarm terminal gives an alarm.
An instantaneous residual pressure detection device, comprising:
the receiving module is used for receiving an action signal, wherein the action signal comprises target circuit information;
the selecting module is used for determining a corresponding residual pressure recording assembly according to the action signal;
the acquisition module is used for acquiring residual voltage recording signals from the residual voltage recording assembly;
the judging module is used for determining whether historical residual voltage exists in the target circuit corresponding to the target circuit information according to the residual voltage recording signal;
and the locking module is used for sending a locking signal to the locking assembly when the historical residual voltage exists in the target circuit, so that the target circuit is reversely locked, and the residual voltage detection of the target circuit is completed.
An instantaneous residual pressure detection device, comprising:
a memory for storing a computer program;
a processor for implementing the steps of the instantaneous residual pressure detection method as described in any one of the above when executing the computer program.
A computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of the instantaneous residual voltage detection method as described in any one of the above.
A residual voltage recording assembly comprises a rectifier, a filter, a DC-DC voltage stabilizer and an energy accumulator;
the rectifier is used for rectifying residual voltage to be recorded to obtain direct current residual voltage;
the filter is used for filtering the direct current residual voltage to obtain residual voltage to be converted;
the DC-DC voltage stabilizer is used for carrying out voltage conversion on the residual voltage to be converted to obtain an excitation voltage of a preset voltage;
the energy accumulator is converted from an idle state to an excited state after receiving the excitation voltage, and is used for transmitting a residual voltage recording signal after receiving a residual voltage detection signal, and is converted from the excited state to the idle state.
Optionally, in the residual voltage recording assembly, the energy accumulator is a magnetic latching relay.
Optionally, in the residual voltage recording assembly, the residual voltage recording assembly further comprises an anti-interference device;
the anti-interference device is used for eliminating interference signals generated when the target circuit is on-off, and avoiding misjudgment of the interference signals as residual voltage to be recorded.
Optionally, in the residual voltage recording assembly, the energy accumulator is a magnetic latching relay.
According to the instantaneous residual voltage detection method provided by the application, the action signal is received, and the action signal comprises target circuit information; determining a corresponding residual pressure recording assembly according to the action signal; acquiring a residual voltage record signal from the residual voltage record assembly; determining whether historical residual voltage exists in a target circuit corresponding to the target circuit information according to the residual voltage record signal; and when the historical residual voltage exists in the target circuit, sending a locking signal to a locking assembly to reversely lock the target circuit, so as to finish the residual voltage detection of the target circuit. According to the application, the residual voltage recording assembly is arranged on the circuit, and the residual voltage recording signal is acquired from the corresponding residual voltage recording assembly after the action signal is received, and whether the residual voltage appears in the circuit or not is judged through the residual voltage recording signal, so that the problem of automatic detection of instantaneous residual voltage is solved, meanwhile, the automatic reverse locking function is realized, the fault removal efficiency is greatly improved, and the service life of the circuit is prolonged. The application also provides an instantaneous residual voltage detection device, equipment and a computer readable storage medium with the beneficial effects, and a residual voltage recording assembly.
Drawings
For a clearer description of embodiments of the application or of the prior art, the drawings that are used in the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of an embodiment of a method for detecting instantaneous residual pressure according to the present application;
FIG. 2 is a schematic flow chart of another embodiment of the method for detecting instantaneous residual pressure according to the present application;
FIG. 3 is a schematic structural diagram of an embodiment of the instant residual pressure detecting device according to the present application;
FIG. 4 is a schematic view of a construction of one embodiment of a residual pressure recording assembly according to the present application;
fig. 5 to 10 are circuit diagrams of various components of one embodiment of the residual voltage recording assembly provided by the present application.
Detailed Description
In order to better understand the aspects of the present application, the present application will be described in further detail with reference to the accompanying drawings and detailed description. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The core of the present application is to provide a method for detecting instantaneous residual pressure, a flow diagram of one specific embodiment thereof is shown in fig. 1, which is called as a specific embodiment one, including:
s101: an action signal is received, the action signal including target circuit information.
S102: and determining a corresponding residual pressure recording assembly according to the action signal.
S103: and acquiring a residual voltage record signal from the residual voltage record assembly.
As a specific embodiment, a residual voltage detection signal may be sent to the residual voltage recording component, and the residual voltage recording component returns the residual voltage recording signal to complete the acquisition.
S104: and determining whether historical residual voltage exists in the target circuit corresponding to the target circuit information according to the residual voltage record signal.
S105: and when the historical residual voltage exists in the target circuit, sending a locking signal to a locking assembly to reversely lock the target circuit, so as to finish the residual voltage detection of the target circuit.
According to the instantaneous residual voltage detection method provided by the application, the action signal is received, and the action signal comprises target circuit information; determining a corresponding residual pressure recording assembly according to the action signal; acquiring a residual voltage record signal from the residual voltage record assembly; determining whether historical residual voltage exists in a target circuit corresponding to the target circuit information according to the residual voltage record signal; and when the historical residual voltage exists in the target circuit, sending a locking signal to a locking assembly to reversely lock the target circuit, so as to finish the residual voltage detection of the target circuit. According to the application, the residual voltage recording assembly is arranged on the circuit, and the residual voltage recording signal is acquired from the corresponding residual voltage recording assembly after the action signal is received, and whether the residual voltage appears in the circuit or not is judged through the residual voltage recording signal, so that the problem of automatic detection of instantaneous residual voltage is solved, meanwhile, the automatic reverse locking function is realized, the fault removal efficiency is greatly improved, and the service life of the circuit is prolonged.
Based on the first embodiment, the step of acquiring the residual voltage record signal is further improved to obtain a second embodiment, and a flow chart of the second embodiment is shown in fig. 2, and the method comprises the following steps:
s201: an action signal is received, the action signal including target circuit information.
S202: and determining a corresponding residual pressure recording assembly according to the action signal.
S203: and acquiring a residual voltage record signal from the residual voltage record assembly, wherein the residual voltage record signal comprises residual voltage time information.
S204: and sending the residual voltage record signal to a superior server for storage.
S205: and determining whether historical residual voltage exists in the target circuit corresponding to the target circuit information according to the residual voltage record signal.
S206: and when the historical residual voltage exists in the target circuit, sending a locking signal to a locking assembly to reversely lock the target circuit, so as to finish the residual voltage detection of the target circuit.
The difference between the present embodiment and the above embodiment is that the content of the residual voltage recording signal and the subsequent processing measure for the residual voltage recording signal are further defined in the present embodiment, and the other steps are the same as those of the above embodiment, so that no redundant description is provided.
In the specific embodiment, the residual voltage record signal is limited to contain information of yes or no, and further comprises residual voltage occurrence time, so that a worker can conveniently reduce the fault occurrence time, further reduce the fault investigation range, and greatly improve the overhaul efficiency.
The instant residual voltage detection device provided by the embodiment of the application is introduced below, and the instant residual voltage detection device and the instant residual voltage detection method described below can be correspondingly referred to each other.
Fig. 3 is a block diagram of an instantaneous residual voltage detection device according to an embodiment of the present application, which is referred to as a third embodiment, and referring to fig. 3, the instantaneous residual voltage detection device may include:
a receiving module 100, configured to receive an action signal, where the action signal includes target circuit information;
the selecting module 200 is configured to determine a corresponding residual pressure recording component according to the action signal;
an acquisition module 300 for acquiring a residual pressure recording signal from the residual pressure recording assembly;
a judging module 400, configured to determine whether a historical residual voltage exists in a target circuit corresponding to the target circuit information according to the residual voltage record signal;
and the locking module 500 is used for sending a locking signal to the locking component when the historical residual voltage exists in the target circuit, so that the target circuit is reversely locked, and the residual voltage detection of the target circuit is completed.
As a preferred embodiment, the acquisition module 300 includes:
and the time information acquisition unit is used for acquiring a residual voltage recording signal from the residual voltage recording assembly, wherein the residual voltage recording signal comprises residual voltage time information.
As a preferred embodiment, the obtaining module 300 further includes:
and the uplink unit is used for sending the residual voltage record signal to a superior server for storage.
As a preferred embodiment, the determining module 400 further includes:
and the alarm sending unit is used for sending a fault signal to an alarm terminal when the historical residual voltage exists in the target circuit, so that the alarm terminal sends an alarm.
The instantaneous residual voltage detection device provided by the application is used for receiving an action signal through the receiving module 100, wherein the action signal comprises target circuit information; the selecting module 200 is configured to determine a corresponding residual pressure recording component according to the action signal; an acquisition module 300 for acquiring a residual pressure recording signal from the residual pressure recording assembly; a judging module 400, configured to determine whether a historical residual voltage exists in a target circuit corresponding to the target circuit information according to the residual voltage record signal; and the locking module 500 is used for sending a locking signal to the locking component when the historical residual voltage exists in the target circuit, so that the target circuit is reversely locked, and the residual voltage detection of the target circuit is completed. According to the application, the residual voltage recording assembly is arranged on the circuit, and the residual voltage recording signal is acquired from the corresponding residual voltage recording assembly after the action signal is received, and whether the residual voltage appears in the circuit or not is judged through the residual voltage recording signal, so that the problem of automatic detection of instantaneous residual voltage is solved, meanwhile, the automatic reverse locking function is realized, the fault removal efficiency is greatly improved, and the service life of the circuit is prolonged.
The instantaneous residual voltage detection device of this embodiment is used to implement the foregoing instantaneous residual voltage detection method, so that the specific implementation of the instantaneous residual voltage detection device can be seen from the foregoing example parts of the instantaneous residual voltage detection method, for example, the receiving module 100, the selecting module 200, the obtaining module 300, the judging module 400, and the locking module 500, which are respectively used to implement steps S101, S102, S103, S104, and S105 in the foregoing instantaneous residual voltage detection method, so that the specific implementation thereof will be described with reference to the corresponding examples of the respective parts and will not be repeated herein.
In addition, the application also provides an instantaneous residual voltage detection device, which comprises:
a memory for storing a computer program;
a processor for implementing the steps of the instantaneous residual pressure detection method as described in any one of the above when executing the computer program. According to the instantaneous residual voltage detection method provided by the application, the action signal is received, and the action signal comprises target circuit information; determining a corresponding residual pressure recording assembly according to the action signal; acquiring a residual voltage record signal from the residual voltage record assembly; determining whether historical residual voltage exists in a target circuit corresponding to the target circuit information according to the residual voltage record signal; and when the historical residual voltage exists in the target circuit, sending a locking signal to a locking assembly to reversely lock the target circuit, so as to finish the residual voltage detection of the target circuit. According to the application, the residual voltage recording assembly is arranged on the circuit, and the residual voltage recording signal is acquired from the corresponding residual voltage recording assembly after the action signal is received, and whether the residual voltage appears in the circuit or not is judged through the residual voltage recording signal, so that the problem of automatic detection of instantaneous residual voltage is solved, meanwhile, the automatic reverse locking function is realized, the fault removal efficiency is greatly improved, and the service life of the circuit is prolonged.
Furthermore, the present application provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the instantaneous residual voltage detection method as described in any one of the above. According to the instantaneous residual voltage detection method provided by the application, the action signal is received, and the action signal comprises target circuit information; determining a corresponding residual pressure recording assembly according to the action signal; acquiring a residual voltage record signal from the residual voltage record assembly; determining whether historical residual voltage exists in a target circuit corresponding to the target circuit information according to the residual voltage record signal; and when the historical residual voltage exists in the target circuit, sending a locking signal to a locking assembly to reversely lock the target circuit, so as to finish the residual voltage detection of the target circuit. According to the application, the residual voltage recording assembly is arranged on the circuit, and the residual voltage recording signal is acquired from the corresponding residual voltage recording assembly after the action signal is received, and whether the residual voltage appears in the circuit or not is judged through the residual voltage recording signal, so that the problem of automatic detection of instantaneous residual voltage is solved, meanwhile, the automatic reverse locking function is realized, the fault removal efficiency is greatly improved, and the service life of the circuit is prolonged.
The application also provides a residual voltage recording assembly, a structural schematic diagram of one specific embodiment of which is shown in fig. 4, which is called a specific embodiment IV, and the residual voltage recording assembly comprises a rectifier 10, a filter 20, a DC-DC voltage stabilizer 30 and an energy accumulator 40;
the rectifier 10 is used for rectifying residual voltage to be recorded to obtain direct current residual voltage;
the filter 20 is configured to filter the dc residual voltage to obtain a residual voltage to be converted;
the DC-DC voltage stabilizer 30 is configured to perform voltage conversion on the residual voltage to be converted to obtain an excitation voltage of a preset voltage;
the accumulator 40 is changed from an idle state to an activated state upon receiving the activation voltage, and is changed from the activated state to the idle state upon receiving the residual voltage detection signal, and transmits a residual voltage recording signal.
In addition, the accumulator 40 is a magnetic latching relay; the power consumption required by the magnetic latching relay is also relatively low, so that the power consumption of the whole assembly can be ensured to be relatively low.
Fig. 5 is a partial circuit diagram of the residual voltage recording assembly provided by the application, wherein the transformation ratio is 120V: the power consumption of the 20V transformer when 30% UN is input must meet the requirement of driving the magnetic latching relay, the voltage of the secondary side of the transformer is filtered (the voltage range is 7V-28V after rectification and filtering) through the rectifier 10D2 (KBP 206), the voltage is input to the DC-DC conversion signal U1 (LM 2596T-5.0, the voltage input range is 7V-40V, and the output fixed voltage is 5V) through the normally closed node of the latching relay K1, and 5V voltage stabilization is obtained through voltage conversion and is used for driving the magnetic latching relay K2.
It should be noted that, since the residual pressure recording unit only changes the energy accumulator 40 to an active state capable of actively transmitting a signal when the residual pressure is recorded, if an external system transmits a residual pressure detection signal to the residual pressure recording unit, but the residual pressure is not recorded in the residual pressure recording unit, the residual pressure recording signal is zero, i.e. the residual pressure recording unit does not respond.
It should be noted that, where the energy storage device 40 is a magnetic latching relay, after the transmission of the residual voltage record signal is completed each time, a residual voltage return circuit is further required to help the magnetic latching relay reset, and one specific embodiment of the residual voltage return circuit is that after the device is powered on and detects the residual voltage signal bs_a, the device sends out a reverse blocking signal, so as to successfully avoid the switch from being closed to the fault line. And then the CPU sends a RESET signal RESET_A to RESET the magnetic latching relay K2, and the CPU sends a CY_BS low level to RESET the K1 relay for detecting the residual voltage signal next time.
As a preferred embodiment, the residual voltage recording assembly further comprises an anti-interference device;
the anti-interference device is used for eliminating interference signals generated when the target circuit is on-off, and avoiding misjudgment of the interference signals as residual voltage to be recorded.
For example, as shown in fig. 6, the anti-interference device may be composed of a comparison circuit and a delay circuit, the comparison circuit and the delay circuit may be a part of a voltage monitoring chip U2 (may be BD 5345), when the residual voltage to be recorded is processed by the rectifier 10 and the filter 20, VDD of the voltage monitoring chip is connected to the DC-DC input end through a resistor, a voltage regulator V6 (MMSZ 5233/6V) is connected between VDD and GND of U2 to protect the voltage monitoring chip U2, voltage output by the VOUT end is connected to a base of a triode Q1 through resistor voltage division to conduct the triode Q1 (1N 8050) and further drive a working coil of the magnetic latching relay K2 to act, and B, E, C in the figure is a triode GND of the triode end and represents a ground wire. By changing the capacitance value of the CT end capacitor C8 of U2 to be specifically smaller than 1 nanometer method including the end point value, the duration time is less than or equal to 40ms and is far better than 80ms proposed in the detection outline; the working range of the anti-interference device can be greatly expanded, and the anti-interference capability of the residual pressure recording assembly is improved.
The delay time calculation method is (refer to the data manual of BD 5345):
T PLH ＝-C CT *R CT *Ln((V DD -V CTH )/V DD )；
wherein: c (C) CT The capacitance value of an external capacitor connected with the CT end is used as the capacitance value of the external capacitor; r is R CT Is the internal impedance of the CT end; v (V) CTH The threshold voltage of the CT end; ln is the natural logarithm.
Fig. 7 is a schematic diagram of a residual voltage signal detection circuit provided by the present application, that is, for detecting whether the residual voltage recording component sends the residual voltage recording signal (in this example, there is residual voltage to send 5V voltage, and no residual voltage to send the zero signal), when the magnetic latching relay K2 operates, the normally closed node of K2 is disconnected, and the normally open node is attracted, so that the residual voltage recording signal bs_a can be detected after the device is powered on due to the retention function.
Fig. 8 shows a latch prohibiting circuit provided by the application, which is used for latching a relay K1, after a residual voltage recording signal bs_a is detected after the device is electrified, a CPU (not shown in the figure) sends out a latch signal cy_bs to enable the relay K1 to act, a normally closed node is disconnected, a normally open node is attracted, and then the action voltage g1_5v of the magnetic latching relay is cut off, so that a reverse latching function is realized.
Fig. 9 is a schematic diagram of a residual voltage resetting circuit provided by the application, when the device is powered on and detects a residual voltage signal bs_a, the device sends out a reverse blocking signal, so as to successfully avoid switching on a fault line. After that, the CPU sends a RESET signal reset_a to RESET the magnetic latching relay K2, and the CPU sends a cy_bs low level to RESET the K1 relay for detecting the residual voltage signal next time, and it should be noted that the C terminal under the circuit diagram in fig. 9 is connected to the C terminal of the triode in fig. 6.
Fig. 10 is a schematic diagram of a power conversion circuit according to the present application, which is configured to charge the magnetic latching relay after receiving the excitation voltage.
All signals entering and exiting the processor are optically isolated, so that the accuracy of the signals is ensured, and system faults are avoided.
The residual voltage recording assembly provided by the application comprises a rectifier 10, a filter 20, a DC-DC voltage stabilizer 30 and an energy accumulator 40; the rectifier 10 is used for rectifying residual voltage to be recorded to obtain direct current residual voltage; the filter 20 is configured to filter the dc residual voltage to obtain a residual voltage to be converted; the DC-DC voltage stabilizer 30 is configured to perform voltage conversion on the residual voltage to be converted to obtain an excitation voltage of a preset voltage; the accumulator 40 is changed from an idle state to an activated state upon receiving the activation voltage, and is changed from the activated state to the idle state upon receiving the residual voltage detection signal, and transmits a residual voltage recording signal. According to the application, the residual voltage to be recorded is used as the energy source of the residual voltage recording signal, so that the residual voltage recording is realized under the condition of no external power supply, the automation of the residual voltage recording is realized, the energy source is greatly saved, and the working cost is reduced.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, so that the same or similar parts between the embodiments are referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
It should be noted that in this specification, relational terms such as first and second, and the like are 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. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, 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 process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The method, the device, the equipment and the computer readable storage medium for detecting the instantaneous residual voltage provided by the application are described in detail above. The principles and embodiments of the present application have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present application and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the application can be made without departing from the principles of the application and these modifications and adaptations are intended to be within the scope of the application as defined in the following claims.
Claims (7)
1. A method for detecting instantaneous residual pressure, comprising:
receiving an action signal, the action signal comprising target circuit information;
determining a corresponding residual pressure recording assembly according to the action signal;
acquiring a residual voltage record signal from the residual voltage record assembly;
determining whether historical residual voltage exists in a target circuit corresponding to the target circuit information according to the residual voltage record signal;
when the historical residual voltage exists in the target circuit, a locking signal is sent to a locking assembly, so that the target circuit is reversely locked, and the residual voltage detection of the target circuit is completed;
the residual voltage recording assembly comprises a rectifier, a filter, a DC-DC voltage stabilizer and an energy accumulator;
the rectifier is used for rectifying residual voltage to be recorded to obtain direct current residual voltage;
the filter is used for filtering the direct current residual voltage to obtain residual voltage to be converted;
the DC-DC voltage stabilizer is used for carrying out voltage conversion on the residual voltage to be converted to obtain an excitation voltage of a preset voltage;
the energy accumulator is converted from an idle state to an excited state after receiving the excitation voltage, and is used for transmitting a residual voltage recording signal after receiving a residual voltage detection signal, and is converted from the excited state to the idle state;
the acquiring the residual voltage record signal from the residual voltage record assembly comprises:
acquiring a residual voltage record signal from the residual voltage record assembly, wherein the residual voltage record signal comprises residual voltage time information;
the residual voltage recording assembly further comprises an anti-interference device;
the anti-interference device is used for eliminating interference signals generated when the target circuit is on-off, and avoiding misjudging the interference signals as residual voltage to be recorded;
the anti-interference device comprises a comparison circuit and a delay circuit, wherein the comparison circuit and the delay circuit are part of a voltage monitoring chip; the capacitance value of the CT end capacitor of the voltage monitoring chip is smaller than 1 nanometer method.
2. The instantaneous residual pressure detection method according to claim 1, further comprising, after acquiring a residual pressure recording signal from the residual pressure recording assembly:
and sending the residual voltage record signal to a superior server for storage.
3. The method for detecting instantaneous residual voltage according to claim 1, wherein after determining whether there is a historical residual voltage in the target circuit corresponding to the target circuit information according to the residual voltage recording signal, further comprises:
and when the historical residual voltage exists in the target circuit, sending a fault signal to an alarm terminal, so that the alarm terminal gives an alarm.
4. The instantaneous residual voltage detection method of claim 1, wherein the energy storage is a magnetic latching relay.
5. An instantaneous residual pressure detection device, characterized by comprising:
the receiving module is used for receiving an action signal, wherein the action signal comprises target circuit information;
the selecting module is used for determining a corresponding residual pressure recording assembly according to the action signal;
the acquisition module is used for acquiring residual voltage recording signals from the residual voltage recording assembly;
the judging module is used for determining whether historical residual voltage exists in the target circuit corresponding to the target circuit information according to the residual voltage recording signal;
the locking module is used for sending a locking signal to the locking assembly when the historical residual voltage exists in the target circuit, so that the target circuit is reversely locked, and the residual voltage detection of the target circuit is completed;
the residual voltage recording assembly comprises a rectifier, a filter, a DC-DC voltage stabilizer and an energy accumulator;
the rectifier is used for rectifying residual voltage to be recorded to obtain direct current residual voltage;
the filter is used for filtering the direct current residual voltage to obtain residual voltage to be converted;
the DC-DC voltage stabilizer is used for carrying out voltage conversion on the residual voltage to be converted to obtain an excitation voltage of a preset voltage;
the energy accumulator is converted from an idle state to an excited state after receiving the excitation voltage, and is used for transmitting a residual voltage recording signal after receiving a residual voltage detection signal, and is converted from the excited state to the idle state;
the acquisition module comprises:
a time information acquisition unit for acquiring a residual voltage recording signal from the residual voltage recording assembly, wherein the residual voltage recording signal comprises residual voltage time information;
the residual voltage recording assembly further comprises an anti-interference device;
the anti-interference device is used for eliminating interference signals generated when the target circuit is on-off, and avoiding misjudging the interference signals as residual voltage to be recorded;
the anti-interference device comprises a comparison circuit and a delay circuit, wherein the comparison circuit and the delay circuit are part of a voltage monitoring chip; the capacitance value of the CT end capacitor of the voltage monitoring chip is smaller than 1 nanometer method.
6. An instantaneous residual pressure detection device, characterized by comprising:
a memory for storing a computer program;
processor for implementing the steps of the instantaneous residual voltage detection method according to any one of claims 1 to 4 when executing said computer program.
7. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the instantaneous residual voltage detection method according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010851490.1A CN111983297B (en) | 2020-08-21 | 2020-08-21 | Instantaneous residual pressure detection method, device and equipment |
Applications Claiming Priority (1)
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| CN112670964B (en) * | 2020-12-30 | 2023-05-12 | 深圳市科陆电子科技股份有限公司 | Residual voltage detection method, system and storage medium for distribution feeder terminal |
| CN112952774A (en) * | 2021-02-23 | 2021-06-11 | 青岛鼎信通讯股份有限公司 | Instantaneous voltage reverse locking module based on power distribution terminal |
| CN114062973B (en) * | 2021-10-21 | 2024-01-23 | 南京瀚元科技有限公司 | In-situ feeder automation reverse locking application method |
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