CN113740725A - Method and device for monitoring state of driving unit of repulsion switch - Google Patents
Method and device for monitoring state of driving unit of repulsion switch Download PDFInfo
- Publication number
- CN113740725A CN113740725A CN202111057957.6A CN202111057957A CN113740725A CN 113740725 A CN113740725 A CN 113740725A CN 202111057957 A CN202111057957 A CN 202111057957A CN 113740725 A CN113740725 A CN 113740725A
- Authority
- CN
- China
- Prior art keywords
- state
- voltage
- capacitor
- determining
- repulsion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Keying Circuit Devices (AREA)
Abstract
The application discloses a method and a device for monitoring the state of a driving unit of a repulsion switch, wherein the method comprises the following steps: determining the state of the charging power supply by acquiring voltage data of the charging power supply; determining the deviation severity of the discharge current by acquiring discharge current data of the repulsive force structure; determining the running state of the capacitor by acquiring historical voltage data and a capacitance value; determining the time sequence correctness of the controller by acquiring the response time of the controller; and finally, carrying out logic processing according to the obtained various state parameters, and giving out a warning when any one state parameter does not accord with a corresponding standard value, or controlling the repulsion switch to stop opening when the deviation value of the corresponding variation value is too large. The monitoring method is used for data calculation, judgment and identification in the online monitoring of the repulsion switch driving unit of the distribution network direct current breaker. Therefore, the technical problem that the monitoring technology of the traditional switch driving unit is not suitable for monitoring the state of the repulsion switch driving unit is solved.
Description
Technical Field
The application relates to the technical field of circuit breakers, in particular to a method and a device for monitoring states of driving units of repulsion switches.
Background
Along with the gradual expansion of flexible direct current power transmission and transformation engineering construction from an extra-high voltage backbone network to a distribution network and a user side, the application of a distribution network direct current breaker is more and more extensive. As a key component of the distribution network direct current circuit breaker, the repulsion switch conducts working current when the direct current circuit breaker works normally, and bears short-circuit current in short time and isolates a fault line through quick insulation recovery capacity during fault protection. The importance of which is self evident.
According to statistics, approximately 75% of faults of the distribution network direct-current circuit breaker are caused by the repulsion switch, and approximately 80% of faults of the repulsion switch are caused by the driving unit, so that the operation monitoring of the repulsion switch driving unit is very important for the operation and detection work of the distribution network direct-current circuit breaker, the abnormal change and the fault evolution of the repulsion switch can be found in advance, and the influence of the misoperation and the operation rejection accident of the distribution network direct-current circuit breaker on the stable operation of a power system is avoided. Different from the traditional mechanical switch which adopts a high-power spring mechanism and a hydraulic mechanism for driving, the repulsion switch adopts a repulsion mechanism for driving the repulsion mechanism and consists of a body and a driving unit. Wherein, the body comprises a repulsion plate, a repulsion coil and a transmission, holding and buffering device; the driving unit comprises an energy storage capacitor and a charging and discharging module thereof, a discharging thyristor group and a trigger control module thereof.
Due to the special principle and the electrical structure of the repulsion mechanism driving unit, the existing monitoring means of the traditional switch driving unit is not suitable for monitoring the state of the repulsion switch driving unit. Therefore, a method suitable for monitoring the state of the repulsive switch driving unit is needed.
Disclosure of Invention
The application provides a method and a device for monitoring the state of a driving unit of a repulsion switch, which are used for solving the technical problem that the monitoring technology of the traditional switch driving unit is not suitable for monitoring the state of the repulsion switch driving unit.
In view of the above, a first aspect of the present application provides a method for monitoring a state of a driving unit of a repulsive switch, the method including:
when the charging power supply operates, receiving an operation feature code and collecting voltage data of the charging power supply, determining the state of the charging power supply according to the operation feature code and the voltage data, and obtaining a fault level according to the state of the charging power supply;
when the repulsion switch is opened or disconnected, acquiring multiple groups of discharge current data of the repulsion mechanism, and determining the deviation severity of the discharge current according to a first floating range among the multiple groups of discharge current data;
collecting multiple groups of historical voltage data of a capacitor, measuring the capacitance value of the capacitor, calculating a second floating range among the multiple groups of historical voltage data, calculating the annual attenuation rate of the capacitor according to the capacitance value and the capacitor operation time, and determining the capacitor operation state according to the second floating range and the annual attenuation rate;
receiving instruction information of a host of a controller, controlling the opening or closing of the mechanical switch through the instruction information, acquiring response time of the opening or closing, and determining the time sequence correctness of the controller according to the response time;
and determining whether to send an alarm signal or control a repulsion switch to stop opening according to the fault level, the deviation severity, the capacitor running state and the time sequence correctness.
Optionally, the method further comprises:
when a control trigger plate of the thyristor works, acquiring a driving voltage signal of the thyristor, and measuring the turn-on time, the turn-on voltage, the turn-off voltage and the driving polarity of a driving waveform of the driving voltage signal;
and respectively comparing the turn-on time, the turn-on voltage, the turn-off voltage and the driving polarity with corresponding preset standard values to determine the running state of the control trigger board, and sending an alarm signal when the running state of the control trigger board is abnormal.
Optionally, the determining a charging power supply state according to the operation feature code and the voltage data, and obtaining a fault level according to the charging power supply state specifically includes:
calculating the difference value between the voltage value of the charging power supply and a preset voltage standard value according to the voltage data;
and when the operation characteristic code is equal to a preset characteristic code value and the difference value is not within a preset range, the charging power supply is in a fault state, and the fault level is determined according to the difference between the difference value and the preset range.
Optionally, the acquiring multiple sets of discharge current data of the repulsive force mechanism, and determining the deviation severity of the discharge current according to a first floating range between the multiple sets of discharge current data specifically includes:
measuring multiple groups of equivalent pulse current data of the repulsion switch by a variable range integrator;
calculating a first floating range among a plurality of groups of equivalent pulse current data, and sending out an alarm signal when the first floating range is larger than 50A;
and determining the deviation severity of the discharge current based on the first floating range.
Optionally, the calculating the annual capacitance decay rate according to the capacitance value and the capacitance running time specifically includes:
and substituting the capacitance value, the rated capacitance value and the capacitor factory age into a value capacitor aging rate calculation formula for calculation to obtain the capacitor aging rate.
Optionally, the capacitance aging rate calculation formula is as follows:
formula (C)TIs a capacitance value, CsetIs a rated capacitance value, and n is the factory life of the capacitor.
A second aspect of the present application provides a driving unit state monitoring device of a repulsive force switch, the device including:
the first monitoring module is used for receiving an operation feature code and collecting voltage data of the charging power supply when the charging power supply operates, determining the state of the charging power supply according to the operation feature code and the voltage data, and obtaining a fault level according to the state of the charging power supply;
the second monitoring module is used for acquiring multiple groups of discharging current data of the repulsion mechanism when the repulsion switch is opened or disconnected, and determining the deviation severity of the discharging current according to a first floating range among the multiple groups of discharging current data;
the third monitoring module is used for collecting multiple groups of historical voltage data of the capacitor, measuring the capacitance value of the capacitor, calculating a second floating range among the multiple groups of historical voltage data, calculating the annual attenuation rate of the capacitor according to the capacitance value and the capacitor operation time, and determining the capacitor operation state according to the second floating range and the annual attenuation rate;
the fourth monitoring module is used for receiving instruction information of the controller host, controlling the opening or closing of the mechanical switch through the instruction information, acquiring response time of the opening or closing, and determining the time sequence correctness of the controller according to the response time;
and the alarm control module is used for determining whether to send an alarm signal or control the repulsion switch to stop opening according to the fault level, the deviation severity, the capacitor running state and the time sequence correctness.
Optionally, the method further comprises:
the fifth monitoring module is used for acquiring a driving voltage signal of the thyristor and measuring the turn-on time, the turn-on voltage, the turn-off voltage and the driving polarity of a driving waveform of the driving voltage signal when the control trigger plate of the thyristor works;
and the alarm module is used for respectively comparing the switching-on time, the switching-on voltage, the switching-off voltage and the driving polarity with corresponding preset standard values to determine the running state of the control trigger board, and sending an alarm signal when the running state of the control trigger board is abnormal.
Optionally, the first monitoring module is specifically configured to:
when the charging power supply operates, receiving the operation characteristic code and collecting voltage data of the charging power supply;
calculating the difference value between the voltage value of the charging power supply and a preset voltage standard value according to the voltage data;
and when the operation characteristic code is equal to a preset characteristic code value and the difference value is not within a preset range, the charging power supply is in a fault state, and the fault level is determined according to the difference between the difference value and the preset range.
Optionally, the second monitoring module is specifically configured to:
when the repulsion switch is opened or disconnected, a variable range integrator measures to obtain a plurality of groups of equivalent pulse current data of the repulsion switch;
calculating a first floating range among a plurality of groups of equivalent pulse current data, and sending out an alarm signal when the first floating range is larger than 50A;
and determining the deviation severity of the discharge current based on the first floating range.
According to the technical scheme, the method has the following advantages:
the application provides a method for monitoring the state of a driving unit of a repulsion switch, which determines the state of a charging power supply by acquiring voltage data of the charging power supply; determining the deviation severity of the discharge current by acquiring discharge current data of the repulsive force structure; determining the running state of the capacitor by acquiring historical voltage data and a capacitance value; determining the time sequence correctness of the controller by acquiring the response time of the controller; and finally, carrying out logic processing according to the obtained various state parameters, and giving out a warning when any one state parameter does not accord with a corresponding standard value, or controlling the repulsion switch to stop opening when the deviation value of the corresponding variation value is too large. Therefore, the online detection device is used for online detection of the hybrid direct current circuit breaker, and meanwhile, each electrical parameter can be adjusted according to actual working conditions, environments and the like, so that deviation caused by equipment operation is avoided. The monitoring method is used for data calculation, judgment and identification in the online monitoring of the repulsion switch driving unit of the distribution network direct current breaker. Therefore, the technical problem that the monitoring technology of the traditional switch driving unit is not suitable for monitoring the state of the repulsion switch driving unit is solved.
Drawings
Fig. 1 is a schematic flow chart of a first embodiment of a method for monitoring a state of a driving unit of a repulsion switch according to an embodiment of the present disclosure;
fig. 2 is a schematic flow chart of a second embodiment of a method for monitoring a state of a driving unit of a repulsion switch according to the present disclosure;
fig. 3 is a schematic structural diagram of an embodiment of a driving unit state monitoring device of a repulsion switch provided in an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, 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, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the 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.
The repulsion switch is driven by a repulsion mechanism. The repulsion mechanism consists of a body and a driving unit; wherein, the body comprises a repulsion plate, a repulsion coil and a transmission, holding and buffering device; the driving unit comprises an energy storage capacitor and a charging and discharging module thereof, a discharging thyristor group and a trigger control module thereof. Under the normal state, the charging module charges the capacitor to a proper voltage for standby, when the repulsion switch is required to act, the control background sends a command to the trigger control module of the repulsion switch driving unit through the optical fiber, the trigger control module controls the conduction of the discharging thyristor through photoelectric conversion and electro-optical conversion, the electric energy in the energy storage capacitor is released, and the repulsion coil and the repulsion plate generate electromagnetic repulsion to drive the switch to act quickly.
Referring to fig. 1, a method for monitoring a state of a driving unit of a repulsion switch according to an embodiment of the present application includes:
In this embodiment, when the charging power supply operates, the detection device receives the operation feature code sent by the charging power supply, and simultaneously, the voltage data of the charging power supply is collected through the 16-bit ADC module to perform comprehensive calculation and judgment. If the feature code is 10000, | (U _ t-U _ set)/U _ set | < 0.05, wherein U is equal to or less thantFor the voltage value measured by the AD conversion module, UsetIf the fault level is the first level, a brake-off prohibition signal is sent out; if the fault class is not one, only a fault alarm signal is issued.
And 102, when the repulsion switch is opened or disconnected, acquiring multiple groups of discharge current data of the repulsion mechanism, and determining the deviation severity of the discharge current according to a first floating range among the multiple groups of discharge current data.
In this embodiment, when the repulsion switch is opened or disconnected, the ADC measures the discharge current in the main repulsion mechanism in the system, and the measurement current is used as a parameter for determining whether the opening and closing are normal. The equivalent pulse current is usually measured, a variable range integrator is adopted to measure the pulse current, and the pulse current and trigger logic synchronously run to realize synchronous current measurement, and the accuracy of time sequence and phase can be analyzed. Meanwhile, the peak current deviation should be smaller than 50A under normal conditions according to the comparison between the measured result and the parameter range. Meanwhile, the modulation of the limit range can be carried out by combining the actual test condition. When the monitored discharge current peak value, discharge time and the like exceed the standard value and the floating range, the module sends out an alarm signal and limits the action of the mechanical switch at the same time, and before the fault is eliminated, the repulsion switch cannot malfunction even if the device receives a correspondingly sent trigger signal.
And 103, collecting multiple groups of historical voltage data of the capacitor, measuring the capacitance value of the capacitor, calculating a second floating range among the multiple groups of historical voltage data, calculating the annual attenuation rate of the capacitor according to the capacitance value and the operating time of the capacitor, and determining the operating state of the capacitor according to the second floating range and the annual attenuation rate.
In this embodiment, the measured value of the charging and discharging capacitor in the repulsion mechanism is also the key parameter in the operation and maintenance of the circuit breaker. The constant current source for constant current charging of the capacitor in the operation and maintenance device collects and records the voltage of the energy storage capacitor, stores and calculates the voltage mean value and the upper and lower limits of the last 30 days, measures the voltage of the capacitor at the same time, and realizes indirect measurement of the capacitance value of the capacitor according to the charging rate and the discharging rate. The capacitance value is calculated by using the bipolar ADC, and the annual attenuation rate is calculated according to the running time of the actual capacitor and the test result. And then, the system leakage current is evaluated according to the discharge rate, and the static charging current can be obtained by subtracting the circuit leakage current from the charging current, so that a more accurate capacitance measurement value is obtained. And when the tested capacitance value is abnormal, calculating the annual attenuation rate according to the deviation value of the voltage value of the capacitor, and comprehensively judging and analyzing the capacitor. If the aging value of the capacitor is too large, the fault is a serious fault and needs to be maintained.
The capacitance annual attenuation rate calculation formula is as follows:
formula (C)TIs a capacitance value, CsetIs a rated capacitance value, and n is the factory life of the capacitor.
And 104, receiving instruction information of the controller host, controlling the opening or closing of the mechanical switch through the instruction information, acquiring response time of the opening or closing, and determining the time sequence correctness of the controller according to the response time.
In this embodiment, when the controller is tested, the high-speed optical fiber receives an optical signal from the controller host, the controller host instruction is decoded by the FPGA built-in decoder, after the FPGA extracts instruction information, the FPGA sends an opening, closing and buffering input instruction to the mechanical switching device, the decoder receives the controller host instruction information as a trigger source (starting point), the software records mechanical switch opening/closing circuit response signals respectively, and the timing sequence correctness is analyzed by analyzing a time interval between the instruction and the response signal. The time sequence sampling time reference of instruction execution is 1us, the total time sequence analysis length is 60ms, and all the time sequence response time ranges of the quick circuit breakers can be covered. The time sequence detection module can customize 2-3 decoding algorithms according to requirements, and the decoding algorithms usually only decode instructions required by the action time sequence of the mechanical switch and do not decode other measurement and state quantities. Thereby determining the timing correctness of the controller based on the response time.
And 105, determining whether to send an alarm signal or control the repulsion switch to stop opening according to the fault level, the deviation severity, the capacitor running state and the time sequence correctness.
After the data is tested, logic processing is performed according to a final signal test result, and an OR logic (OR) is used for four factors for generating and sending the signals of the forbidden open logic gates, namely, if any one factor is true, the signals of the forbidden open logic gates are generated and sent.
The application provides a method for monitoring the state of a driving unit of a repulsion switch, which determines the state of a charging power supply by acquiring voltage data of the charging power supply; determining the deviation severity of the discharge current by acquiring discharge current data of the repulsive force structure; determining the running state of the capacitor by acquiring historical voltage data and a capacitance value; determining the time sequence correctness of the controller by acquiring the response time of the controller; and finally, carrying out logic processing according to the obtained various state parameters, and giving out a warning when any one state parameter does not accord with a corresponding standard value, or controlling the repulsion switch to stop opening when the deviation value of the corresponding variation value is too large. Therefore, the online detection device is used for online detection of the hybrid direct current circuit breaker, and meanwhile, each electrical parameter can be adjusted according to actual working conditions, environments and the like, so that deviation caused by equipment operation is avoided. The monitoring method is used for data calculation, judgment and identification in the online monitoring of the repulsion switch driving unit of the distribution network direct current breaker. Therefore, the technical problem that the monitoring technology of the traditional switch driving unit is not suitable for monitoring the state of the repulsion switch driving unit is solved.
The above is a first embodiment of a method for monitoring a driving unit state of a repulsion switch provided in the embodiments of the present application, and the following is a second embodiment of a method for monitoring a driving unit state of a repulsion switch provided in the embodiments of the present application.
Referring to fig. 2, a method for monitoring a state of a driving unit of a repulsion switch according to a second embodiment of the present application includes:
step 201, when the charging power supply runs, receiving an operation characteristic code and collecting voltage data of the charging power supply; calculating the difference value between the voltage value of the charging power supply and the preset voltage standard value according to the voltage data; and when the operation characteristic code is equal to the preset characteristic code value and the difference value is not within the preset range, the charging power supply is in a fault state, and the fault level is determined according to the difference value between the difference value and the preset range.
Step 201 is the same as step 101 in the embodiment, please refer to step 101 for description, and will not be described herein again.
Step 202 is the same as step 102 in the embodiment, please refer to step 102, and will not be described herein.
And 203, collecting multiple groups of historical voltage data of the capacitor, measuring the capacitance value of the capacitor, calculating a second floating range among the multiple groups of historical voltage data, substituting the capacitance value, the rated capacitance value and the factory age of the capacitor into a value capacitor annual attenuation rate calculation formula for calculation to obtain the annual attenuation rate of the capacitor, and determining the running state of the capacitor according to the second floating range and the annual attenuation rate.
Step 203 is the same as step 103 in the embodiment, please refer to step 103, which is not described herein again.
And 204, receiving instruction information of the controller host, controlling the opening or closing of the mechanical switch through the instruction information, acquiring response time of the opening or closing, and determining the time sequence correctness of the controller according to the response time.
Step 204 is the same as step 104 in the embodiment, please refer to step 104 for description, and will not be described herein again.
The embodiment further adds the monitoring factor as step 205, specifically, when the control trigger board of the thyristor is in operation, the ADC is used to measure the driving voltage of the thyristor, and the voltage value and the driving polarity of the driving voltage are measured under the current trigger logic in combination with the trigger synchronization signal. The measured on-time, off-time, on-voltage, off-voltage, etc. of the drive waveform. The on-rise time and the off-fall time are selected to be 10% -90% of the pulse amplitude. By collecting cathode and anode of thyristorThe voltages of the pole and gate levels are calculated, analyzed and compared at the synchronous triggering moment, for example: at 25 ℃, VD≥12V，2.62V≥VGTMore than or equal to 1.2V, wherein VDIs the voltage between the anode and cathode of the thyristor, VGTFor the trigger voltage of the thyristor, the temperature coefficient is corrected, the measured voltage is calculated within the interval of the set value, the control panel displays 'normal', otherwise, the control panel displays 'abnormal', and meanwhile, the alarm indicator lamp is lightened.
And step 206, determining whether to send out an alarm signal or control the repulsion switch to stop opening according to the fault level, the deviation severity, the capacitor running state, the time sequence correctness and the driving voltage signal.
Step 206 is the same as step 105 in the embodiment, please refer to step 105, and will not be described herein again.
The above is the second embodiment of the method for monitoring the state of the driving unit of the repulsion switch provided in the embodiments of the present application, and the following is an embodiment of the device for monitoring the state of the driving unit of the repulsion switch provided in the embodiments of the present application.
Referring to fig. 3, a driving unit state monitoring binding apparatus of a repulsion switch according to an embodiment of the present application includes:
the first monitoring module 301 is configured to receive the operation feature code and collect voltage data of the charging power supply when the charging power supply operates, determine a state of the charging power supply according to the operation feature code and the voltage data, and obtain a fault level according to the state of the charging power supply.
The second monitoring module 302 is configured to, when the repulsion switch is opened or disconnected, obtain multiple sets of discharging current data of the repulsion mechanism, and determine a deviation severity of the discharging current according to a first floating range between the multiple sets of discharging current data.
The third monitoring module 303 is configured to collect multiple sets of historical voltage data of the capacitor, measure a capacitance value of the capacitor, calculate a second floating range between the multiple sets of historical voltage data, calculate an annual attenuation rate of the capacitor according to the capacitance value and a capacitor operation time, and determine an operation state of the capacitor according to the second floating range and the annual attenuation rate.
The fourth monitoring module 304 is configured to receive instruction information of the controller host, control switching-off or switching-on of the mechanical switch through the instruction information, acquire response time of the switching-off or switching-on, and determine correctness of a timing sequence of the controller according to the response time.
And the alarm control module 305 is used for determining whether to send an alarm signal or control the repulsion switch to stop opening according to the fault level, the deviation severity, the capacitor running state and the time sequence correctness.
Further, the device is pricked in drive unit state monitoring of repulsion switch of this application still includes:
and the fifth monitoring module is used for acquiring a driving voltage signal of the thyristor and measuring the turn-on time, the turn-on voltage, the turn-off voltage and the driving polarity of a driving waveform of the driving voltage signal when the control trigger plate of the thyristor works.
And the alarm module is used for respectively comparing the turn-on time, the turn-on voltage, the turn-off voltage and the driving polarity with corresponding preset standard values, determining the running state of the control trigger board, and sending an alarm signal when the running state of the control trigger board is abnormal.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The terms "first," "second," "third," "fourth," and the like in the description of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be understood that in the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" for describing an association relationship of associated objects, indicating that there may be three relationships, e.g., "a and/or B" may indicate: only A, only B and both A and B are present, wherein A and B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of single item(s) or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should 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 in the embodiments of the present application.
Claims (10)
1. A method for monitoring the state of a driving unit of a repulsion switch is characterized by comprising the following steps:
when the charging power supply operates, receiving an operation feature code and collecting voltage data of the charging power supply, determining the state of the charging power supply according to the operation feature code and the voltage data, and obtaining a fault level according to the state of the charging power supply;
when the repulsion switch is opened or disconnected, acquiring multiple groups of discharge current data of the repulsion mechanism, and determining the deviation severity of the discharge current according to a first floating range among the multiple groups of discharge current data;
collecting multiple groups of historical voltage data of a capacitor, measuring the capacitance value of the capacitor, calculating a second floating range among the multiple groups of historical voltage data, calculating the annual attenuation rate of the capacitor according to the capacitance value and the capacitor operation time, and determining the capacitor operation state according to the second floating range and the annual attenuation rate;
receiving instruction information of a host of a controller, controlling the opening or closing of the mechanical switch through the instruction information, acquiring response time of the opening or closing, and determining the time sequence correctness of the controller according to the response time;
and determining whether to send an alarm signal or control a repulsion switch to stop opening according to the fault level, the deviation severity, the capacitor running state and the time sequence correctness.
2. The method for monitoring the state of a driving unit of a repulsive switch according to claim 1, further comprising:
when a control trigger plate of the thyristor works, acquiring a driving voltage signal of the thyristor, and measuring the turn-on time, the turn-on voltage, the turn-off voltage and the driving polarity of a driving waveform of the driving voltage signal;
and respectively comparing the turn-on time, the turn-on voltage, the turn-off voltage and the driving polarity with corresponding preset standard values to determine the running state of the control trigger board, and sending an alarm signal when the running state of the control trigger board is abnormal.
3. The method for monitoring the state of a driving unit of a repulsion switch according to claim 1, wherein said determining the state of a charging source according to said operation signature and said voltage data, and obtaining the fault level according to said state of the charging source, specifically comprises:
calculating the difference value between the voltage value of the charging power supply and a preset voltage standard value according to the voltage data;
and when the operation characteristic code is equal to a preset characteristic code value and the difference value is not within a preset range, the charging power supply is in a fault state, and the fault level is determined according to the difference between the difference value and the preset range.
4. The method for monitoring the state of a driving unit of a repulsive force switch according to claim 1, wherein said acquiring a plurality of sets of discharge current data of a repulsive force mechanism and determining the severity of deviation of discharge current according to a first floating range between said plurality of sets of discharge current data specifically comprises:
measuring multiple groups of equivalent pulse current data of the repulsion switch by a variable range integrator;
calculating a first floating range among a plurality of groups of equivalent pulse current data, and sending out an alarm signal when the first floating range is larger than 50A;
and determining the deviation severity of the discharge current based on the first floating range.
5. The method for monitoring the state of a driving unit of a repulsion switch according to claim 1, wherein the calculating the annual capacitance decay rate according to the capacitance and the capacitance running time specifically comprises:
and substituting the capacitance value, the rated capacitance value and the capacitor factory age into a value capacitor aging rate calculation formula for calculation to obtain the capacitor aging rate.
6. The method for monitoring the state of a driving unit of a repulsive switch according to claim 5, wherein said capacitance aging rate calculation formula is:
formula (C)TIs a capacitance value, CsetAt a rated capacitance value, n is electricThe factory life is allowed.
7. A driving unit state monitoring device of a repulsion switch, comprising:
the first monitoring module is used for receiving an operation feature code and collecting voltage data of the charging power supply when the charging power supply operates, determining the state of the charging power supply according to the operation feature code and the voltage data, and obtaining a fault level according to the state of the charging power supply;
the second monitoring module is used for acquiring multiple groups of discharging current data of the repulsion mechanism when the repulsion switch is opened or disconnected, and determining the deviation severity of the discharging current according to a first floating range among the multiple groups of discharging current data;
the third monitoring module is used for collecting multiple groups of historical voltage data of the capacitor, measuring the capacitance value of the capacitor, calculating a second floating range among the multiple groups of historical voltage data, calculating the annual attenuation rate of the capacitor according to the capacitance value and the capacitor operation time, and determining the capacitor operation state according to the second floating range and the annual attenuation rate;
the fourth monitoring module is used for receiving instruction information of the controller host, controlling the opening or closing of the mechanical switch through the instruction information, acquiring response time of the opening or closing, and determining the time sequence correctness of the controller according to the response time;
and the alarm control module is used for determining whether to send an alarm signal or control the repulsion switch to stop opening according to the fault level, the deviation severity, the capacitor running state and the time sequence correctness.
8. The driving unit state monitoring device of a repulsive force switch according to claim 7, further comprising:
the fifth monitoring module is used for acquiring a driving voltage signal of the thyristor and measuring the turn-on time, the turn-on voltage, the turn-off voltage and the driving polarity of a driving waveform of the driving voltage signal when the control trigger plate of the thyristor works;
and the alarm module is used for respectively comparing the switching-on time, the switching-on voltage, the switching-off voltage and the driving polarity with corresponding preset standard values to determine the running state of the control trigger board, and sending an alarm signal when the running state of the control trigger board is abnormal.
9. The driving unit state monitoring device of a repulsion switch according to claim 7, characterized in that said first monitoring module is specifically configured to:
when the charging power supply operates, receiving the operation characteristic code and collecting voltage data of the charging power supply;
calculating the difference value between the voltage value of the charging power supply and a preset voltage standard value according to the voltage data;
and when the operation characteristic code is equal to a preset characteristic code value and the difference value is not within a preset range, the charging power supply is in a fault state, and the fault level is determined according to the difference between the difference value and the preset range.
10. The driving unit state monitoring device of a repulsion switch according to claim 7, characterized in that said second monitoring module is specifically configured to:
when the repulsion switch is opened or disconnected, a variable range integrator measures to obtain a plurality of groups of equivalent pulse current data of the repulsion switch;
calculating a first floating range among a plurality of groups of equivalent pulse current data, and sending out an alarm signal when the first floating range is larger than 50A;
and determining the deviation severity of the discharge current based on the first floating range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111057957.6A CN113740725B (en) | 2021-09-09 | 2021-09-09 | Method and device for monitoring state of driving unit of repulsive force switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111057957.6A CN113740725B (en) | 2021-09-09 | 2021-09-09 | Method and device for monitoring state of driving unit of repulsive force switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113740725A true CN113740725A (en) | 2021-12-03 |
| CN113740725B CN113740725B (en) | 2023-05-16 |
Family
ID=78737659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111057957.6A Active CN113740725B (en) | 2021-09-09 | 2021-09-09 | Method and device for monitoring state of driving unit of repulsive force switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113740725B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118213937A (en) * | 2024-03-29 | 2024-06-18 | 杭州驭电微电子有限公司 | Magnetic latching relay driving chip |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0992100A (en) * | 1995-09-26 | 1997-04-04 | Fuji Electric Co Ltd | Dc high-speed vacuum breaker |
| CN105656101A (en) * | 2014-11-19 | 2016-06-08 | 国家电网公司 | Voltage monitoring circuit of energy storage capacitor of quick bypass switch |
| CN106410962A (en) * | 2016-09-30 | 2017-02-15 | 华中科技大学 | Mechanical direct-current circuit-breaker controller |
| CN110133492A (en) * | 2019-05-30 | 2019-08-16 | 沈阳工业大学 | A kind of high-voltage circuitbreaker electric operating mechanism on-Line Monitor Device and method |
| CN111653444A (en) * | 2020-05-27 | 2020-09-11 | 中国电力科学研究院有限公司 | Quick mechanical switch equivalent load test method and test platform |
| CN112485666A (en) * | 2020-12-09 | 2021-03-12 | 广东电网有限责任公司 | Join in marriage intelligent fortune of net direct current circuit breaker many parameters and maintain detection device |
| CN112531902A (en) * | 2020-12-09 | 2021-03-19 | 广东电网有限责任公司 | Join in marriage net direct current breaker repulsion switch drive unit on-line status monitoring device |
| CN112748328A (en) * | 2019-10-31 | 2021-05-04 | 西安西电高压开关有限责任公司 | Monitoring circuit, electromagnetic repulsion mechanism and circuit breaker |
| CN113325301A (en) * | 2021-04-26 | 2021-08-31 | 南京南瑞继保电气有限公司 | High-speed switch control protection equipment testing device and method |
-
2021
- 2021-09-09 CN CN202111057957.6A patent/CN113740725B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0992100A (en) * | 1995-09-26 | 1997-04-04 | Fuji Electric Co Ltd | Dc high-speed vacuum breaker |
| CN105656101A (en) * | 2014-11-19 | 2016-06-08 | 国家电网公司 | Voltage monitoring circuit of energy storage capacitor of quick bypass switch |
| CN106410962A (en) * | 2016-09-30 | 2017-02-15 | 华中科技大学 | Mechanical direct-current circuit-breaker controller |
| CN110133492A (en) * | 2019-05-30 | 2019-08-16 | 沈阳工业大学 | A kind of high-voltage circuitbreaker electric operating mechanism on-Line Monitor Device and method |
| CN112748328A (en) * | 2019-10-31 | 2021-05-04 | 西安西电高压开关有限责任公司 | Monitoring circuit, electromagnetic repulsion mechanism and circuit breaker |
| CN111653444A (en) * | 2020-05-27 | 2020-09-11 | 中国电力科学研究院有限公司 | Quick mechanical switch equivalent load test method and test platform |
| CN112485666A (en) * | 2020-12-09 | 2021-03-12 | 广东电网有限责任公司 | Join in marriage intelligent fortune of net direct current circuit breaker many parameters and maintain detection device |
| CN112531902A (en) * | 2020-12-09 | 2021-03-19 | 广东电网有限责任公司 | Join in marriage net direct current breaker repulsion switch drive unit on-line status monitoring device |
| CN113325301A (en) * | 2021-04-26 | 2021-08-31 | 南京南瑞继保电气有限公司 | High-speed switch control protection equipment testing device and method |
Non-Patent Citations (1)
| Title |
|---|
| 阮绵晖等: "10 kV快速机械开关斥力机构仿真分析" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118213937A (en) * | 2024-03-29 | 2024-06-18 | 杭州驭电微电子有限公司 | Magnetic latching relay driving chip |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113740725B (en) | 2023-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109036964B (en) | Control method for preventing contact adhesion, storage medium, control device and relay | |
| RU2765380C2 (en) | Method for identifying a failure event in a sector of an electrical distribution network | |
| CN105403831A (en) | Fault on-line monitoring device of high-voltage breaker and monitoring method thereof | |
| CN112255562B (en) | System and method for testing performance of direct-current power supply board card | |
| CN111751718A (en) | Power electronic phase selection system and phase selection method thereof | |
| CN110426627B (en) | Power relay contact performance test system for relay protection device | |
| CN113740725A (en) | Method and device for monitoring state of driving unit of repulsion switch | |
| CN115051328A (en) | Distribution network direct-current circuit breaker operation evaluation system and method | |
| CN104251976A (en) | Protection property testing device of miniature circuit breaker and running method thereof | |
| CN117310334A (en) | Test method and device of intelligent test system of automatic reclosing molded case circuit breaker | |
| Stanek | Analysis of circuit breaker controlled switching operations-from manual to automatic | |
| CN111934285B (en) | Method and device for protecting turn-to-turn short circuit of dry type air-core reactor | |
| CN106353637B (en) | Static Var Compensator thyristor-controlled reactor accident analysis localization method | |
| CN118209853A (en) | Method and system for predicting effective residual electric life of high-voltage circuit breaker | |
| CN118130973A (en) | Distribution line asymmetric fault judging method and fault isolating method | |
| CN117630656A (en) | Breaker fault judging method, system, computer equipment and storage medium | |
| CN115032530A (en) | Full-automatic mechanical performance test and accelerated aging platform for medium-voltage circuit breaker | |
| CN214703888U (en) | Electric automobile high voltage direct current fuse life-span automatic checkout device | |
| CN111934286B (en) | Method and device for protecting turn-to-turn short circuit of dry air reactor based on power factor | |
| CN111781494B (en) | Improved automatic on-line detection method and device for mechanical characteristics of circuit breaker | |
| CN114895180A (en) | Electric service life analysis technology of direct current breaker | |
| JP2011244593A (en) | Accident aspect decision device | |
| CN219122354U (en) | Test recording device for circuit breaker | |
| CN110967626A (en) | High-voltage circuit breaker synchronism online laser detection device and method | |
| CN104993388A (en) | PT (Potential Transformer) paralleling device applied to transformer substation and voltage fault automatic identification method for PT (Potential Transformer) paralleling device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |