CN112505606A - Calibration device and calibration method for setting values of multiple voltage monitors - Google Patents
Calibration device and calibration method for setting values of multiple voltage monitors Download PDFInfo
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Abstract
The invention discloses a calibrating device and a calibrating method for setting values of multiple voltage monitors. The system comprises a state sequence standard source module, at least two level acquisition modules and an upper computer; the state sequence standard source module is connected with at least two voltage monitors and at least two level acquisition modules, and is used for providing detection voltage signals for the voltage monitors and synchronously timing with the level acquisition modules, wherein the voltage values of the detection voltage signals gradually increase or gradually decrease according to preset step lengths; the level acquisition modules are connected with the voltage monitors in a one-to-one correspondence manner and are used for acquiring alarm signals sent by the voltage monitors and determining the time for sending the alarm signals; the upper computer is connected with the level acquisition module and the state sequence standard source module and is used for receiving the time for sending the alarm signal and the detection voltage signal and judging the setting value of the voltage monitor according to the received alarm signal time and the detection voltage signal. The invention can improve the verification efficiency and precision and reduce the verification error.
Description
Technical Field
The embodiment of the invention relates to the technical field of instrument detection, in particular to a calibration device and a calibration method for setting values of multiple voltage monitors.
Background
In order to maintain the reactive power balance of the power system and maintain the stability of the power system, it is necessary to install a voltage monitor at a voltage monitoring point of a power receiving end of each level of voltage to monitor whether the voltage value of the power receiving end of each level of voltage is within a normal range. In order to ensure the accuracy and reliability of the voltage monitor of the power system during online operation and network access, the power operation and maintenance personnel need to verify the voltage monitor, and can send out an alarm signal in time when the voltage during online operation and network access is abnormal, so as to prompt the power operation and maintenance personnel to be abnormal in online operation and network access voltage. At present, because the number of voltage monitors is huge, the verification task of electric power operation and maintenance personnel on the voltage monitors is heavy, and the electric power operation and maintenance personnel need to adopt a mode of simultaneously verifying a plurality of voltage detectors, so that the verification efficiency of the voltage detectors is improved, and the electric power operation and maintenance cost is reduced.
At present, equipment capable of simultaneously calibrating a plurality of voltage monitors is available in the market, but the equipment is used for calibrating the set value of the voltage monitor, so that the calibration efficiency of the voltage monitor is low due to long time consumption, and the problem of information transmission delay is caused due to large communication pressure of an upper computer during detection, and further the error of the calibrated set value of the voltage monitor is larger than the error of the set value of the actual voltage monitor.
Disclosure of Invention
The invention provides a calibrating device and a calibrating method for setting values of multiple voltage monitors, which can rapidly realize the simultaneous calibration of the setting values of the multiple voltage monitors, improve the simultaneous calibration efficiency of the setting values of the multiple voltage monitors, improve the precision of obtaining the setting values of the voltage monitors and reduce the calibration error of the setting values of the voltage monitors.
In a first aspect, an embodiment of the present invention provides a calibration device for setting values of multiple voltage monitors, including a state sequence standard source module, at least two level acquisition modules, and an upper computer;
the state sequence standard source module is connected with at least two voltage monitors and at least two level acquisition modules, and is used for providing detection voltage signals for the voltage monitors and synchronously timing with the level acquisition modules, wherein the voltage values of the detection voltage signals gradually increase or gradually decrease according to preset step lengths;
the level acquisition modules are connected with the voltage monitors in a one-to-one correspondence manner and are used for acquiring alarm signals sent by the voltage monitors and determining the time for sending the alarm signals;
the upper computer is connected with the level acquisition module and the state sequence standard source module and is used for receiving the time for sending the alarm signal and the detection voltage signal and judging the setting value of the voltage monitor according to the received alarm signal time and the detection voltage signal.
Optionally, the state sequence standard source module is configured to perform B-code synchronization on a detection voltage signal generated by the state sequence standard source module and the level acquisition module; the upper computer is used for synchronizing the time of the detection voltage signal and the time of sending the alarm signal to obtain a setting value of the voltage monitor.
Alternatively, the detection voltage signal is stepwise increased or stepwise decreased in steps of 0.1% of the standard voltage value.
Optionally, the length of the step is 100 ms.
Optionally, the upper computer is further configured to calculate a setting error of the voltage monitor according to the setting of the voltage monitor after determining the setting of the voltage monitor.
In a second aspect, an embodiment of the present invention further provides a method for calibrating a setting value of a voltage monitor, including:
the state sequence standard source module sends detection voltage signals to at least two voltage monitors and synchronizes time synchronization with the level acquisition module, wherein the voltage values of the detection voltage signals gradually increase or gradually decrease according to a preset step length;
the level acquisition module acquires an alarm signal sent by the voltage monitor and determines the time for sending the alarm signal;
and the upper computer receives the time for sending the alarm signal and the detection voltage signal and judges the setting value of the voltage monitor according to the received alarm signal time and the detection voltage signal.
Optionally, the state sequence standard source module performs B-code synchronization on a detection voltage signal generated by the state sequence standard source module and the level acquisition module;
and the upper computer obtains the setting value of the voltage monitor by synchronously timing the detection voltage signal and the time for sending the alarm signal.
Alternatively, the detection voltage signal is stepwise increased or stepwise decreased in steps of 0.1% of the standard voltage value.
Optionally, the length of the step is 100 ms.
Optionally, after determining the setting value of the voltage monitor, the upper computer calculates a setting value error of the voltage monitor according to the setting value of the voltage monitor.
According to the technical scheme of the embodiment of the invention, the state sequence standard source module is connected with at least two voltage monitors, so that detection voltage signals can be provided for the voltage monitors at the same time, the voltage monitors can receive the detection voltage signals which are gradually increased or gradually decreased according to the preset step length at the same time, a plurality of voltage signals can be provided for the voltage monitors at one time, and the setting value of the voltage monitors can be conveniently detected. The level acquisition modules are connected with the voltage monitors in a one-to-one correspondence mode, so that each level acquisition module only correspondingly records the time when the voltage monitor connected with the level acquisition module sends an alarm signal. When the voltage value of a certain voltage signal of the detected voltage signals is equal to the setting value of the voltage monitor, the voltage monitor can send an alarm signal and transmit the sent alarm signal to the level acquisition module which is relatively connected with the voltage monitor, so that the accuracy of the time of sending the alarm signal by the voltage monitor determined and recorded by the level acquisition module is greatly improved. The upper computer is connected with the level acquisition module and the state sequence standard source module and can receive the time when the level acquisition module acquires the alarm signal sent by the voltage monitor and the detection voltage signal generated by the state sequence standard source module. When the time of the alarm signal is the same as the generation time of a certain voltage signal of the detection voltage signal, the voltage signal generated at the time is the voltage signal for triggering the voltage monitor to send the alarm signal, and further the voltage value of the voltage signal generated at the time is the setting value of the voltage monitor. Therefore, compared with the existing equipment for calibrating the set value of the voltage monitor, the communication pressure of the upper computer is greatly reduced, the simultaneous calibration of the set values of multiple voltage monitors can be rapidly realized, the simultaneous calibration efficiency of the set values of multiple voltage monitors is improved, the precision of obtaining the set value of the voltage monitor is improved, and the calibration error of the set value of the voltage monitor is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a multiple voltage monitor setting value calibrating apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating an increasing waveform of a detection voltage signal generated by a state sequence standard source module according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating an increasing waveform of a detection voltage signal generated by a state sequence standard source module according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of a method for calibrating setting values of multiple voltage monitors according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of another method for calibrating setting values of multiple voltage monitors according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. 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 invention.
The inventor researches and discovers that the detection time of the equipment for simultaneously verifying a plurality of voltage monitors in the prior art is long, and most of the verification time is spent on verifying the setting values of the voltage monitors. The verification of the setting value of the voltage monitor by the equipment needs to continuously control and regulate the voltage output of a signal source through an upper computer, and then continuously acquire voltage signals through a plurality of level acquisition modules which are relatively connected with the voltage monitor. The state of each level acquisition module needs to be inquired while the upper computer controls and adjusts the voltage output of the signal source each time. Therefore, the upper computer needs to continuously control the signal source output and continuously inquire the state of each level acquisition module until the setting value of each voltage monitor is tested.
Therefore, the verification of the setting value of the voltage monitor by the equipment for simultaneously verifying a plurality of voltage monitors in the prior art is long in time cost, and further the verification efficiency of the voltage monitor is low. In addition, the verification of the device on the setting value of the voltage monitor can cause the communication pressure of an upper computer to be overlarge, so that the problem of information transmission delay exists, and further the time when the setting value warning signal of the voltage monitor is triggered and the time for obtaining the setting value of the voltage monitor cannot be accurately corresponding, so that the accuracy for obtaining the setting value of the voltage monitor is difficult to guarantee, and the error of the verified setting value of the voltage monitor is larger than the error of the actual setting value of the voltage monitor.
The invention improves the defects of the prior art for simultaneously calibrating a plurality of voltage monitors. A detection voltage signal which is gradually increased or gradually decreased according to a preset step length is generated by a state sequence standard source module to trigger the voltage monitor to send out an alarm signal, a level acquisition module corresponds to the time for acquiring the alarm signal sent by the voltage monitor, and an upper computer can obtain the setting value of the corresponding alarm signal in the same step length of the detection voltage signal according to the state sequence time generated by the standard source and the time for sending the alarm signal by the voltage monitor. Therefore, the voltage monitor setting value verification method can quickly realize the voltage monitor setting value verification and improve the voltage monitor setting value verification efficiency. In addition, the functions that the prior art host computer needs to realize have: continuously controlling the output of the signal source; continuously inquiring the state of each level acquisition module; obtaining a setting value of each voltage monitor; obtaining a setting value error; the functions of the upper computer need to be realized are as follows: acquiring a detection voltage signal and the time for triggering an alarm signal by a voltage detector to obtain a setting voltage value of the voltage detector; and calculating the setting value error of the voltage monitor. Therefore, compared with the prior art, the communication pressure of the upper computer is greatly reduced, and the inaccuracy of the time for acquiring the alarm signal sent by the voltage monitor caused by the communication delay of the upper computer is avoided, so that the precision for acquiring the set value of the voltage monitor is improved, and the verification error of the set value of the voltage monitor is reduced.
The embodiment of the invention provides a calibration device for setting values of multiple voltage monitors, which is suitable for detecting the setting values of the multiple voltage monitors. Fig. 1 is a schematic structural diagram of a multiple voltage monitor setting value calibrating apparatus according to an embodiment of the present invention. As shown in fig. 1, the multiple voltage monitor setting value verification devices include a state sequence standard source module 110, at least two level acquisition modules 120, and an upper computer 130; the state sequence standard source module 110 is connected to at least two voltage monitors 140 and at least two level acquisition modules 120, and is configured to provide a detection voltage signal to each voltage monitor 140, and perform synchronous time synchronization with the level acquisition modules 120, where a voltage value of the detection voltage signal is gradually increased or gradually decreased according to a preset step length; the level acquisition modules 120 are connected with the voltage monitors 140 in a one-to-one correspondence manner, and are used for acquiring alarm signals sent by the voltage monitors 140 and determining the time for sending the alarm signals; the upper computer 130 is connected to the level acquisition module 120 and the state sequence standard source module 110, and is configured to receive a time for sending an alarm signal and a detection voltage signal, and determine a setting value of the voltage monitor 140 according to the received alarm signal time and detection voltage signal.
The state sequence standard source module 110 may generate a detection voltage signal that gradually increases or gradually decreases according to a preset step length, where the detection voltage signal includes a plurality of voltage signals with different voltage values, different voltage signals in the same step length are sequentially sent out corresponding to different time instants, and differences between a voltage signal generated at a previous time instant and a voltage signal generated at a next time instant are equal, that is, the voltage values of the voltage signals sequentially generated in the detection voltage signal with a fixed step length generated by the state sequence standard source module 110 are arranged in an equal-difference sequence. The state sequence standard source module 110 is connected to at least two voltage monitors 140, and can provide a detection voltage signal to each voltage monitor 140 at the same time, so that each voltage monitor 140 receives the detection voltage signal gradually increasing or gradually decreasing according to a preset step length at the same time. Therefore, the detected voltage signals received by the voltage monitors 140 connected to the state sequence standard source module 110 are the same detected voltage signal, and the detected voltage signals include a plurality of voltage signals with different voltage values, so that a plurality of voltage signals can be provided for the voltage monitors 140 at one time, and the setting values of the plurality of detected voltage monitors 140 are facilitated. The level collection module 120 may record the time when the voltage monitor 140 sends the alarm signal according to the alarm signal sent by the voltage monitor 140. The state sequence standard source module 110 is connected to at least two level collecting modules 120, and is configured to provide time information corresponding to voltage signals with different voltage values of the detected voltage signals to each level collecting module 120, and synchronize with the level collecting modules 120. The level acquisition module 120 continuously receives the time synchronization signal provided by the state sequence standard source module 110, and when the voltage monitor 140 received by the level acquisition module 120 sends an alarm signal, the time information corresponding to the voltage signals with different voltage values of the detection voltage signal received at the same time is recorded, so as to complete the synchronous time setting process of the level acquisition module 120. The level acquisition modules 120 are connected with the voltage monitors 140 in a one-to-one correspondence manner, so that each level acquisition module 120 only records the time when the voltage monitor 140 connected with the level acquisition module sends the alarm signal. When the voltage value of a certain voltage signal of the detected voltage signals reaches the setting value of the voltage monitor 140, the voltage monitor 140 sends an alarm signal and transmits the alarm signal to the level acquisition module 120 connected to the voltage monitor. When receiving the alarm signal sent by the voltage monitor 140, the level acquisition module 120 can accurately determine and record the time when the voltage monitor 140 sends the alarm signal. Because the level acquisition module 120 and the voltage monitor 140 are connected in a one-to-one correspondence manner, and the transmission of information between the level acquisition module 120 and the voltage monitor 140 is very fast, the time for transmitting the alarm signal between the level acquisition module 120 and the voltage monitor 140 can be ignored, so that the alarm signal transmitted by the voltage monitor 140 can be immediately received by the level acquisition module 120 while the alarm signal is transmitted by the voltage monitor 140. However, in the prior art, the state of each level acquisition module is continuously queried through an upper computer to determine the time of an alarm signal sent by a voltage monitor. Because the communication pressure of the upper computer is overlarge in the prior art, the state information transmitted to the level acquisition module of the upper computer has the phenomenon of transmission delay, so that the accuracy of the time for sending the alarm signal by the voltage monitor 140, which is directly determined and recorded by the level acquisition module 120, is greatly improved compared with the prior art. The upper computer 130 is connected to the level acquisition module 120 and the state sequence standard source module 110, and can receive the time when the level acquisition module 120 acquires the alarm signal sent by the voltage monitor 140 and the detection voltage signal generated by the state sequence standard source module 110. Since the detection voltage signal generated by the state sequence standard source module 110 includes the generation time and the voltage value of each different voltage signal, the upper computer 130 can compare the received alarm signal time with the generation time of the different voltage signals of the detection voltage signal in sequence. When the time of the alarm signal is the same as the generation time of a certain voltage signal of the detection voltage signal, it indicates that the voltage signal generated at the time is the voltage signal triggering the voltage monitor 140 to send the alarm signal, and further, the voltage value of the voltage signal generated at the time is the setting value of the voltage monitor 140. Therefore, the invention generates the detection voltage signal which is gradually increased or gradually decreased according to the preset step length by the state sequence standard source module 110 to trigger the voltage monitor 140 to send out the alarm signal, the level acquisition module 120 correspondingly acquires the time of sending out the alarm signal by the voltage monitor 140, and the upper computer 130 can obtain the setting value of the corresponding alarm signal in the same step length of the detection voltage signal according to the state sequence time generated by the standard source and the time of sending out the alarm signal by the voltage monitor 140. The communication pressure between the upper computer 130 and the level acquisition module 120 can be greatly reduced, the setting values of a plurality of voltage monitors 140 can be quickly verified at the same time, the efficiency of verifying the setting values of the plurality of voltage monitors 140 at the same time is improved, the precision of obtaining the setting values of the voltage monitors 140 is improved, and the verification error of the setting values of the voltage monitors 140 is reduced.
Optionally, the state sequence standard source module is configured to perform B-code synchronization on a detection voltage signal generated by the state sequence standard source module and the level acquisition module; the upper computer is used for synchronizing the time of the detection voltage signal and the time of sending the alarm signal to obtain a setting value of the voltage monitor.
In the synchronous time synchronization of the B code, time information (including 4 kinds of information of second, minute, hour and day) in a BCD code format is transmitted, the lower bit is before, the higher bit is after, the lower bit is after ten bits before, and the time information expressed by binary and taking the second(s) as a unit is used for time synchronization. The state sequence standard source module is used for carrying out B code synchronous time synchronization on a detection voltage signal generated by the state sequence standard source module and the level acquisition module; the state sequence standard source module transmits time signals corresponding to voltage signals of different voltage values of the detection voltage signals to the level acquisition module, and simultaneously transmits the detection voltage signals to the voltage monitor. The time setting process of the B code is as follows: when the voltage monitor sends an alarm signal, the level acquisition module receives the alarm signal sent by the voltage monitor and the time signals corresponding to the voltage signals with different voltage values of the detection voltage signal generated by the state sequence standard source module at the same time, and the level acquisition module records the time signals corresponding to the voltage signals with different voltage values of the detection voltage signal generated by the state sequence standard source module. The upper computer can synchronize the time of the detection voltage signal and the time of sending the alarm signal after receiving the time of the voltage monitor sending the alarm signal and the detection voltage signal generated by the state sequence standard source module collected by the level collection module. Because the detection voltage signal that state sequence standard source module produced includes the production time and the magnitude of voltage value of every different voltage signal, and then the host computer can carry out synchronous time setting with the production time of the different voltage signal of detection voltage signal in proper order with the alarm signal time of receiving. When the time of the alarm signal is the same as the generation time of a certain voltage signal of the detection voltage signal, the voltage signal generated at the time is the voltage signal triggering the voltage monitor to send the alarm signal, and the voltage value of the voltage signal generated at the time can be determined to be the setting value of the voltage monitor. The uniform and accurate time for calibrating the time synchronization by the B code can be acquired corresponding to the time, the accuracy of acquiring the set value of the voltage monitor can be improved, and the calibration error of the set value of the voltage monitor is reduced.
Specifically, the detection voltage signal is gradually increased or gradually decreased in steps of 0.1% of the standard voltage value;
the standard voltage value is a voltage value specified in DL500-2017 voltage monitor use technical conditions, and an upper limit value and a lower limit value of different standard voltage values are specifically specified. For example, the voltage of the user power receiving end of each voltage class generally takes alternating current 100v, 220v, 380v and the like, and the upper limit value of the alternating current 100v is 130v, and the lower limit value is 60 v; the upper limit value of the alternating current 220v is 286v, and the lower limit value is 99 v; the upper limit value of the alternating current 380v is 494v, and the lower limit value thereof is 171 v. Fig. 2 is a schematic diagram illustrating an increasing waveform of a detection voltage signal generated by a state sequence standard source module according to an embodiment of the present invention. As shown in fig. 2, the detection voltage signal is gradually increased in steps of 0.1% of the standard voltage value. Assuming that the standard voltage value of the power receiving end of the user is 100v, and the detection voltage signal is gradually increased by the step length of 0.1% of the standard voltage value, the voltage value of the voltage signal firstly is 100v, the voltage value of the voltage signal secondly is 110v, the voltage value of the voltage signal thirdly is 120v, and the voltage value of the voltage signal fourthly is 130 v. The setting value of the voltage monitor comprises an upper limit setting value and a lower limit setting value, and the alarm signal of the voltage monitor further comprises an upper limit alarm signal and a lower limit alarm signal. The detection voltage signal which is gradually increased by the step length of 0.1 percent of the standard voltage value is transmitted to the voltage monitor, the voltage monitor can be triggered to send out an upper limit alarm signal, and finally the upper limit setting value of the voltage monitor can be determined. Fig. 3 is a schematic diagram of a decreasing waveform of a detection voltage signal generated by a state sequence standard source module according to an embodiment of the present invention. As shown in fig. 3, the detection voltage signal is gradually decreased in steps of 0.1% of the standard voltage value. Assuming that the standard voltage value of the power receiving end of the user is 100v, and the detection voltage signal is gradually decreased by a step length of 0.1% of the standard voltage value, the voltage value of the first voltage signal is 100v, the voltage value of the second voltage signal is 90v, the voltage value of the third voltage signal is 80v, and the voltage value of the fourth voltage signal is 70 v. The detection voltage signal which is gradually decreased in step length with the standard voltage value of 0.1% is transmitted to the voltage monitor, the voltage monitor can be triggered to send out a lower limit alarm signal, and finally the lower limit setting value of the voltage monitor can be determined.
Specifically, the length of the step is 100 ms.
The duration of the step length of the detection voltage signal generated by the state sequence standard source module and gradually increased or gradually decreased is 100ms, and if the step length of the voltage signal of each step of the detection voltage signal is 1ms, the detection voltage signal comprises 100 voltage signals; if the step size of the voltage signal per step of the detection voltage signal is 5ms, the detection voltage signal includes 20 voltage signals.
It should be noted that the above process only exemplarily shows that the step length of the voltage signal per step of the preset detection voltage signal is 1ms/2ms, and in other embodiments, the step length of the voltage signal per step of the preset detection voltage signal may include other time length settings to meet different requirements for verification of the setting value of the voltage monitor at the power receiving end of the user at each voltage class.
Optionally, the upper computer is further configured to calculate a setting error of the voltage monitor according to the setting of the voltage monitor after determining the setting of the voltage monitor.
The setting value error of the voltage monitor is automatically calculated by the upper computer according to the setting value of the voltage monitor. The setting value error formula of the voltage monitor is as follows:
Ustis the upper limit setting value or the lower limit setting value, U, of the voltage monitorbThe standard voltage value is used for detecting the setting value of the voltage monitor, namely the standard voltage value of the power receiving end of a user. The upper computer is adopted to automatically calculate the setting value error of the voltage monitor according to the setting value of the voltage monitor, so that an error result can be quickly and conveniently obtained, the complexity and the error of manual calculation are avoided, the workload of electric power operation and maintenance personnel is reduced, and the verification efficiency of the setting value of the voltage monitor is improved.
Fig. 4 is a schematic flow chart of a method for calibrating setting values of multiple voltage monitors according to an embodiment of the present invention, where the method specifically includes the following steps:
s210, the state sequence standard source module sends detection voltage signals to at least two voltage monitors, and the detection voltage signals and the level acquisition module perform synchronous time synchronization, wherein the voltage values of the detection voltage signals gradually increase or gradually decrease according to preset step lengths;
s220, the level acquisition module acquires an alarm signal sent by the voltage monitor and determines the time for sending the alarm signal;
and S320, the upper computer receives the time for sending the alarm signal and the detection voltage signal, and judges the setting value of the voltage monitor according to the received alarm signal time and the detection voltage signal.
According to the technical scheme of the embodiment of the invention, the state sequence standard source module can simultaneously provide detection voltage signals for each voltage monitor, so that each voltage monitor can simultaneously receive the detection voltage signals which are gradually increased or gradually decreased according to the preset step length, a plurality of voltage signals can be provided for a plurality of voltage monitors at one time, and the setting value of the voltage monitors can be conveniently detected. The voltage monitoring instrument comprises a voltage monitoring instrument, a level acquisition module, a voltage monitoring instrument and a level acquisition module, wherein the voltage monitoring instrument is used for monitoring the voltage value of a certain voltage signal of the detected voltage signal, the level acquisition module is used for recording the time of sending the alarm signal by the voltage monitoring instrument, and when the voltage value of the certain voltage signal of the detected voltage signal is equal to or greater than the setting value of the voltage monitoring instrument, the voltage monitoring instrument can send the alarm signal and transmit the sent alarm signal to the level acquisition module, so that. The upper computer can receive the time when the level acquisition module acquires the alarm signal sent by the voltage monitor and the detection voltage signal generated by the state sequence standard source module. When the time of the alarm signal is the same as the generation time of a certain voltage signal of the detection voltage signal, the voltage signal generated at the time is the voltage signal for triggering the voltage monitor to send the alarm signal, and further the voltage value of the voltage signal generated at the time is the setting value of the voltage monitor. Therefore, communication pressure of an upper computer is greatly reduced for verification of the set values of the voltage monitors, simultaneous verification of the set values of the voltage monitors can be quickly achieved, simultaneous verification efficiency of the set values of the voltage monitors is improved, accuracy of obtaining the set values of the voltage monitors is improved, and verification errors of the set values of the voltage monitors are reduced.
Optionally, the state sequence standard source module performs B-code synchronization on a detection voltage signal generated by the state sequence standard source module and the level acquisition module; and the upper computer obtains the setting value of the voltage monitor by synchronously timing the detection voltage signal and the time for sending the alarm signal.
Optionally, the detection voltage signal is gradually increased or gradually decreased in steps of 0.1% of the current value;
optionally, the length of the step is 100 ms.
The method for calibrating the setting values of the plurality of voltage monitors provided by the embodiment can be executed by the device provided by any embodiment of the invention, has the corresponding beneficial effects of the execution device, and is not repeated herein.
Fig. 5 is a schematic flow chart of another method for calibrating setting values of multiple voltage monitors according to an embodiment of the present invention, where the method specifically includes the following steps:
s210, the state sequence standard source module sends detection voltage signals to at least two voltage monitors, and the detection voltage signals and the level acquisition module perform synchronous time synchronization, wherein the voltage values of the detection voltage signals gradually increase or gradually decrease according to preset step lengths;
s220, the level acquisition module acquires an alarm signal sent by the voltage monitor and determines the time for sending the alarm signal;
and S230, the upper computer receives the time for sending the alarm signal and the detection voltage signal, and judges the setting value of the voltage monitor according to the received alarm signal time and the detection voltage signal.
S240, calculating the setting value error of the voltage monitor according to the setting value of the voltage monitor.
The method for calibrating the setting values of the plurality of voltage monitors provided by the embodiment can be executed by the device provided by any embodiment of the invention, has the corresponding beneficial effects of the execution device, and is not repeated herein.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A calibration device for setting values of multiple voltage monitors is characterized by comprising a state sequence standard source module, at least two level acquisition modules and an upper computer;
the state sequence standard source module is connected with at least two voltage monitors and at least two level acquisition modules, and is used for providing detection voltage signals for the voltage monitors and carrying out synchronous time synchronization with the level acquisition modules, wherein the voltage values of the detection voltage signals are gradually increased or gradually decreased according to preset step lengths;
the level acquisition modules are connected with the voltage monitors in a one-to-one correspondence manner and are used for acquiring alarm signals sent by the voltage monitors and determining the time for sending the alarm signals;
the upper computer is connected with the level acquisition module and the state sequence standard source module and is used for receiving the time for sending the alarm signal and the detection voltage signal and judging the setting value of the voltage monitor according to the received alarm signal time and the detection voltage signal.
2. The multiple voltage monitor setting value verification device according to claim 1, wherein the state sequence standard source module is configured to perform B-code synchronization on the detection voltage signal generated by the state sequence standard source module and the level acquisition module;
and the upper computer is used for synchronizing the detection voltage signal with the time of sending the alarm signal to obtain a setting value of the voltage monitor.
3. The multiple voltage monitor setting value verification apparatus according to claim 1,
the detection voltage signal is gradually increased or gradually decreased in steps of 0.1% of the standard voltage value.
4. The multiple voltage monitor setting value verification apparatus according to claim 3,
the duration of the step is 100 ms.
5. The multiple voltage monitor setting value verification apparatus according to claim 1, wherein the upper computer is further configured to calculate a setting value error of the voltage monitor according to the setting value of the voltage monitor after the setting value of the voltage monitor is determined.
6. A method for calibrating setting values of a plurality of voltage monitors is characterized by comprising the following steps:
the state sequence standard source module sends detection voltage signals to at least two voltage monitors and synchronizes time synchronization with the level acquisition module, wherein the voltage values of the detection voltage signals gradually increase or gradually decrease according to a preset step length;
the level acquisition module acquires an alarm signal sent by the voltage monitor and determines the time for sending the alarm signal;
and the upper computer receives the time for sending the alarm signal and the detection voltage signal and judges the setting value of the voltage monitor according to the received alarm signal time and the detection voltage signal.
7. The method for calibrating the setting values of the plurality of voltage monitors according to claim 6, wherein the state sequence standard source module performs B-code synchronization on the detection voltage signal generated by the state sequence standard source module and the level acquisition module;
and the upper computer obtains the setting value of the voltage monitor by synchronizing the detection voltage signal with the time of sending the alarm signal.
8. The method for calibrating the setting values of a plurality of voltage monitors according to claim 6,
the detection voltage signal is gradually increased or gradually decreased in steps of 0.1% of the standard voltage value.
9. The method for calibrating the setting values of a plurality of voltage monitors according to claim 8,
the duration of the step is 100 ms.
10. The method for calibrating the setting values of a plurality of voltage monitors according to claim 6, wherein the upper computer calculates the setting error of the voltage monitor according to the setting value of the voltage monitor after determining the setting value of the voltage monitor.
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