CN117929902A - Composite surge protector detection method, surge protector and storage medium - Google Patents
Composite surge protector detection method, surge protector and storage medium Download PDFInfo
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Abstract
The invention discloses a detection method of a compound surge protector, the surge protector and a storage medium, comprising the following steps: responding to an initial sampling signal of a target surge protector, and acquiring initial resistance information of all gap units on at least two discharge branches; acquiring current resistance information of all gap units according to a preset inspection period or in response to an inspection sampling signal of a target surge protector; respectively comparing the relation between the current resistance information and the initial resistance information with a preset resistance threshold value, and judging the resistance state information of each gap unit; calculating branch state information of each discharge branch according to the resistance state information of each gap unit on each discharge branch; and determining the overall lightning protection performance of the target surge protector according to the branch state information of all the discharging branches. The invention realizes the accurate rating of the anti-surge performance of the composite surge protector, leads the application trend of the surge protector to be intelligent, ensures the safety of an electricity utilization loop and avoids the waste of the composite surge protector.
Description
Technical Field
The invention relates to the technical field of electrical equipment protection equipment, in particular to a composite surge protector detection method, a surge protector and a storage medium.
Background
The surge protector, also called a lightning protector or a surge protector, is an electronic device for providing safety protection for various electronic equipment, instruments and meters and communication lines; when a peak current or voltage is suddenly generated in an electric loop or a communication line due to external interference, the surge protector can conduct and shunt in a very short time, so that damage of surges to other devices in the loop is avoided.
With the application scene presenting higher requirements to lightning protection performance, the lightning protection loop design inside the surge protector also continuously develops, for example, chinese patent publication No. CN114336553a discloses a surge protector, which utilizes a trigger circuit to trigger the gap units in advance, shortens the stacking number of the gap units triggered layer by layer, reduces the base number of the next gap unit starting affected by the impedance after the last gap unit triggering, effectively reduces the wave front discharge voltage, reduces the starting voltage, improves the response speed, and improves the protection performance of the product.
After the surge protector provided with a plurality of different gap units operates for a long time and has multiple surge actions, performance degradation and even failure can occur, the conventional surge protector indicates or outputs corresponding switching signals to prompt a user that the surge protector needs to be replaced by arranging a tripping device with a specific structure inside, and the tripping device occupies space and has large action sensitivity, so that the current performance of the surge protector cannot be accurately reflected. When the performance of the gap unit is reduced, a low-impedance loop cannot be formed under the action of surge to rapidly discharge energy, so that the subsequent standby protection electric appliance is damaged; short circuit failure in the gap cell is prone to rapid heating under surge action and even fire.
Therefore, how to accurately detect the anti-surge performance of the surge protector provided with a plurality of different kinds of gap units is an important approach for making the surge protector intelligent in the industry.
Disclosure of Invention
In view of the above, the present invention provides a method for detecting a composite surge protector, a surge protector and a storage medium.
In a first aspect of the present invention, there is provided a method for detecting a composite surge protector device, comprising:
Responding to an initial sampling signal of a target surge protector, and acquiring initial resistance information of all gap units on at least two discharge branches;
Acquiring current resistance information of all the gap units according to a preset inspection period or in response to an inspection sampling signal of a target surge protector;
Respectively comparing the relation between the current resistance information and the initial resistance information with a preset resistance threshold value, and judging the resistance state information of each gap unit;
Calculating branch state information of each discharge branch according to the resistance state information of each gap unit on each discharge branch;
And determining the overall lightning protection performance of the target surge protector according to the branch state information of all the discharging branches.
The invention is further arranged to define each discharge Branch as a Branch (i), i is more than or equal to 2 and less than or equal to N, i and N are natural numbers, and the Branch (i) represents an ith discharge Branch;
Defining each gap unit as an Element (i, j), wherein j is more than or equal to 2 and less than or equal to M, and both the j and M are natural numbers, and the Element (i, j) represents a j-th discharge gap on an i-th discharge branch;
Defining the initial resistance information of the gap unit as R inital, defining the current resistance information of the gap unit as R current and defining the preset resistance threshold as R threshold;
if the current resistance information R current of the gap unit Element (i, j) is smaller than the preset resistance threshold value R threshold, determining that the resistance state information of the gap unit Element (i, j) is a damaged state;
if the current resistance information R current of the gap unit Element (i, j) is not smaller than the preset resistance threshold value R threshold, dividing the resistance state information of the gap unit Element (i, j) into a plurality of health grade states according to the ratio of the current resistance information R current to the initial resistance information R inital.
The invention is further arranged to poll the resistance state information of the gap cell Element (i, j) on each of the discharge branches Branch (i);
If the resistance state information of the first gap unit Element (i, 1) on the discharge Branch (i) is in a damaged state, directly determining that the discharge Branch (i) is an invalid discharge Branch;
If the resistance state information of the first gap unit Element (i, 1) on the discharge Branch (i) is in a certain health level state, continuously inquiring the resistance state information of the next gap unit Element (i, 2) until the polled resistance state information of the gap unit Element (i, j) is in a damaged state or the last gap unit Element (i, M) on the discharge Branch (i).
The invention is further configured to define the Branch state information of the discharge Branch (i) as branch_state (i); after the discharge Branch (i) is defined to be polled, L gap units which are continuously in any health grade state are contained in the discharge Branch (i);
calculating the branch state information: ，
Wherein, P, t and R are constants, L is more than or equal to 1 and less than or equal to M,1<t,
A is the coefficient of performance conversion of the first gap cell Element (i, 1) on the discharge Branch (i), Q is the coefficient of performance conversion of the L-th gap cell Element (i, L) on the discharge Branch (i),For the current resistance information of the first gap cell on the discharge Branch (i)/>For initial resistance information of the first gap cell on the discharge Branch (i)/>For the current resistance information of the L-th gap cell on the discharge Branch (i)/>Is the initial resistance information of the L-th gap cell on the discharge Branch (i).
The invention is further arranged to add up and sum Branch state information branch_state (i) of the discharge Branch (i) except for the invalid discharge Branch to obtain the overall lightning protection performance Protector _PERF of the target surge protector;
Comparing the overall lightning protection performance Protector _PERF of the target surge protector with a preset lightning protection performance threshold PERF_threshold; if the overall lightning protection performance Protector _PERF of the target surge protector is smaller than the overall lightning protection performance Protector _PERF, determining that the lightning protection performance of the target surge protector is unqualified, and sending out alarm information; and if the overall lightning protection performance Protector _PERF of the target surge protector is not smaller than the overall lightning protection performance Protector _PERF, determining that the lightning protection performance of the target surge protector is qualified.
The invention is further configured to divide the resistance state information of the gap unit Element (i, j) into at least three health grade states according to the ratio of the current resistance information R current to the initial resistance information R inital, and to assign the performance degradation factor corresponding to the gap unit Element (i, j) according to different health grade states.
The invention is further arranged to define corresponding unit lightning protection performance according to different types of the gap unit elements (i, j); and the performance conversion coefficient in the calculation formula of the branch state information is positively correlated with the performance degradation factor and the unit lightning protection performance.
The invention is further arranged that the same discharge leg or the target surge protector comprises at least two of said gap units.
According to a second aspect of the invention, a surge protector is provided, comprising a surge protector module and a monitoring module connected to one side of the surge protector module through a plug pin seat, wherein a plurality of gap units are arranged in the surge protector module, the gap units form at least two discharging branches, each discharging branch comprises at least two gap units, the same discharging branch or the surge protector module comprises at least two gap units, the discharging branches are respectively connected with an external power supply, an MCU, a resistance sampling unit and a communication alarm unit are arranged in the monitoring module, the input ends of the resistance sampling units are respectively connected with two ends of each gap unit, the output ends of the resistance sampling units are respectively connected with the signal input ends of the MCU, the MCU is in communication connection with the communication alarm unit, and the MCU executes the composite surge protector detection method when the surge protector works.
In a third aspect of the present invention, there is provided a storage medium having stored thereon a computer program which, when executed by a processor, implements the above-described composite surge protector detection method.
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
The surge protector detection method is characterized in that the surge protector is composed of different gap units aiming at an internal lightning protection device, a lightning protection loop of the surge protector is composite, the surge protector sometimes shows the characteristics of a switch type SPD, sometimes shows the characteristics of a voltage limiting type SPD, sometimes shows two characteristics at the same time, and has good effects on subsequent lightning protection and indoor fine protection of a power supply system and a signal system, but the corresponding cost is higher. According to the detection method of the composite surge protector, the resistance state information of each gap unit is judged by comparing the relation between the current resistance information of the gap unit and the initial resistance information with the preset resistance threshold value, so that the branch state information of each discharging branch is calculated, the overall lightning protection performance of the target surge protector is comprehensively calculated according to the branch state information, the accurate rating of the surge protection performance of the composite surge protector is realized, and the application trend of the surge protector is intelligentized; when the performance of part of gap units in the surge protector is reduced, but the overall lightning protection performance is still in a qualified range, the surge protector can still be continuously used in a power utilization loop, the standby electric appliance can still be effectively protected, the safety of the power utilization loop is ensured, and the waste of the compliance surge protector is avoided.
Drawings
Fig. 1 is a flow chart of a method for detecting a composite surge protector according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a composite surge protector circuit according to an embodiment of the present invention.
Fig. 3 is an exploded view of a surge protector according to an embodiment of the present invention.
Fig. 4 is an internal schematic view of a surge protection module according to an embodiment of the invention.
Fig. 5 is a block diagram of electrical connections between various units in a surge protector according to an embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
With reference to fig. 1, the technical scheme of the invention is a detection method of a composite surge protector, comprising the following steps:
s100, responding to an initial sampling signal of a target surge protector, and acquiring initial resistance information of all gap units on at least two discharge branches;
S200, acquiring current resistance information of all the gap units according to a preset inspection period or in response to an inspection sampling signal of a target surge protector;
S300, respectively comparing the relation between the current resistance information and the initial resistance information with a preset resistance threshold value, and judging the resistance state information of each gap unit;
s400, calculating branch state information of each discharge branch according to the resistance state information of each gap unit on each discharge branch;
s500, according to the branch state information of all the discharging branches, determining the overall lightning protection performance of the target surge protector.
In this embodiment, the initial resistance information is a resistance value of the gap unit when the product is shipped from a factory or when the gap unit is first mounted on a circuit to be protected.
In this embodiment, the current resistance information is a resistance value of the gap unit in the use process of the surge protector, and the controller samples the resistance of the gap unit at regular time or actively performs inspection triggering on the target surge protector by an external upper computer; it should be noted that, the monitoring module in the following embodiment 2 is used to trigger at fixed time according to the preset inspection period, and the collection of the resistance value of the gap unit is performed during normal power consumption.
In this embodiment, the preset resistance threshold is a resistance value corresponding to a short circuit failure in the gap unit, for example, after the varistor repeatedly passes through surge voltage surge, the varistor eventually forms a failure device of about 1000 ohms, so that preset resistance thresholds corresponding to different gap units are different.
In this embodiment, the resistance state information refers to the current health of the gap unit after a period of use of the surge protector.
In this embodiment, the branch state information refers to the current lightning protection performance of the discharge branch after a period of use of the surge protector.
In this embodiment, each discharge Branch is defined as Branch (i), where i is greater than or equal to 2 and less than or equal to N, i and N are natural numbers, and Branch (i) represents an ith discharge Branch;
Defining each gap unit as an Element (i, j), wherein j is more than or equal to 2 and less than or equal to M, and both the j and M are natural numbers, and the Element (i, j) represents a j-th discharge gap on an i-th discharge branch;
S310, defining the initial resistance information of the gap unit as R inital, defining the current resistance information of the gap unit as R current and defining the preset resistance threshold as R threshold;
s320, if the current resistance information R current of the gap unit Element (i, j) is smaller than the preset resistance threshold R threshold, determining that the resistance state information of the gap unit Element (i, j) is a damaged state;
S330, if the current resistance information R current of the gap unit Element (i, j) is not smaller than the preset resistance threshold R threshold, dividing the resistance state information of the gap unit Element (i, j) into a plurality of health grade states according to the ratio of the current resistance information R current to the initial resistance information R inital.
In this embodiment, as shown in fig. 2, the surge protector includes i discharging branches Branch (i), each discharging Branch (i) is connected in series with the same or different gap unit Element (i, j), each gap unit Element (i, j) corresponds to a corresponding Trigger unit Trigger (i, j), and two ends of all discharging branches Branch (i) are connected to an external power supply through a Terminal terminal_1 and a Terminal terminal_2 respectively.
In the above embodiments, the circuit application of the surge protector will be described: when an external power supply is in surge, each discharging Branch (i) synchronously discharges, and no matter which discharging Branch (i) is, the gap unit elements (i, j) Trigger discharging sequentially, for example, after the triggering unit Trigger (1, 1) triggers the gap unit elements (1, 1), after the gap unit elements (1, 1) are discharged and conducted, the triggering unit Trigger (1, 2) can Trigger the gap unit elements (1, 2).
In the above embodiment, it should be noted that the number j of the gap units Element (i, j) in each of the discharging branches Branch (i) may be the same or different, for example, 3 gap units are provided on the first discharging Branch (1), and 4 gap units are provided on the second discharging Branch (1).
In this embodiment, S410 polls the resistance state information of the gap cell Element (i, j) on each of the discharge branches Branch (i);
S420, if the resistance state information of the first gap unit Element (i, 1) on the discharge Branch (i) is in a damaged state, directly determining that the discharge Branch (i) is an invalid discharge Branch;
And S430, if the resistance state information of the first gap unit Element (i, 1) on the discharge Branch (i) is in a certain health grade state, continuously inquiring the resistance state information of the next gap unit Element (i, 2) until the polled resistance state information of the gap unit Element (i, j) is in a damaged state or the last gap unit Element (i, M) on the discharge Branch (i).
In this embodiment, since the gap unit elements (i, j) on the same discharge Branch (i) perform trigger discharge sequentially, if the resistance state information of the first gap unit Element (i, 1) on a certain discharge Branch (i) is in a damaged state, the discharge Branch (i) is directly determined to be an invalid discharge Branch, and the resistance information query of the next gap unit Element (i, 2) is not needed, so that unnecessary calculation amount is reduced.
In this embodiment, S440 defines the Branch state information of the discharge Branch (i) as branch_state (i); after the discharge Branch (i) is defined to be polled, L gap units which are continuously in any health grade state are contained in the discharge Branch (i);
calculating the branch state information: ，
Wherein P, t and R are constants, L is more than or equal to 1 and less than or equal to M,1< t, A is the performance conversion coefficient of the first gap unit Element (i, 1) on the discharge Branch (i), Q is the performance conversion coefficient of the L-th gap unit Element (i, L) on the discharge Branch (i), and, For the current resistance information of the first gap cell on the discharge Branch (i)/>For initial resistance information of the first gap cell on the discharge Branch (i)/>For the current resistance information of the L-th gap cell on the discharge Branch (i)/>Is the initial resistance information of the L-th gap cell on the discharge Branch (i).
In this embodiment, the health status rating is performed on the gap unit Element (i, 1) on the discharging Branch (i), and the lightning protection performance of the whole discharging Branch (i) is quantized by combining the corresponding performance conversion coefficient, so as to realize the quantization of the overall lightning protection performance of the surge protector.
In this embodiment, S510, the Branch state information branch_state (i) of the discharge Branch (i) except for the invalid discharge Branch is accumulated and summed to obtain the overall lightning protection performance Protector _pef of the target surge protector;
S520, comparing the overall lightning protection performance Protector _PERF of the target surge protector with a preset lightning protection performance threshold PERF_threshold; if the overall lightning protection performance Protector _PERF of the target surge protector is smaller than the overall lightning protection performance Protector _PERF, determining that the lightning protection performance of the target surge protector is unqualified, and sending out alarm information; and if the overall lightning protection performance Protector _PERF of the target surge protector is not smaller than the overall lightning protection performance Protector _PERF, determining that the lightning protection performance of the target surge protector is qualified.
In this embodiment, the resistance state information of the gap unit Element (i, j) is divided into at least three health level states according to the ratio of the current resistance information R current to the initial resistance information R inital, and the performance degradation factor corresponding to the gap unit Element (i, j) is given according to different health level states.
In this embodiment, according to the different types of the gap unit elements (i, j), defining the corresponding unit lightning protection performance; and the performance conversion coefficient in the calculation formula of the branch state information is positively correlated with the performance degradation factor and the unit lightning protection performance.
In the above embodiment, the performance degradation curves of different kinds of gap unit elements (i, j) are different, so that the unit lightning protection performance is introduced to determine the performance conversion coefficient, so that the overall lightning protection performance of the surge protector is evaluated more accurately.
In this embodiment, the same discharge leg or the target surge protector comprises at least two of the gap units; the gap unit is composed of at least one of a gas discharge tube, a thyristor, zinc oxide, a piezoresistor, an inhibiting diode, an avalanche diode and the like.
The surge protector detection method of the technical scheme is a surge protector with an internal lightning protection device composed of different gap units, wherein a lightning protection loop is of a composite type, the surge protector sometimes shows the characteristics of a switch type SPD, sometimes shows the characteristics of a voltage limiting type SPD, sometimes shows two characteristics at the same time, has good effects on the follow-up lightning protection and indoor fine protection of a power supply system and a signal system, but the corresponding cost is higher.
The composite surge protector detection method of the invention judges the resistance state information of each gap unit by comparing the relation between the current resistance information and the initial resistance information of the gap unit and the preset resistance threshold value, thereby calculating the branch state information of each discharge branch, comprehensively calculating the overall lightning protection performance of the target surge protector according to the branch state information, realizing the accurate rating of the surge protection performance of the composite surge protector, and leading the application trend of the surge protector to be intelligent; when the performance of part of gap units in the surge protector is reduced, but the overall lightning protection performance is still in a qualified range, the surge protector can still be continuously used in a power utilization loop, the standby electric appliance can still be effectively protected, the safety of the power utilization loop is ensured, and the waste of the compliance surge protector is avoided.
Examples
Referring to fig. 2 to 5, the technical scheme of the invention is a surge protector, comprising a surge protection module 10 and a monitoring module 30 connected to one side of the surge protection module 10 through a socket 20, wherein a plurality of gap units 11 are arranged in the surge protection module 10, a plurality of gap units 11 form at least two discharging branches 12, each discharging branch 12 comprises at least two gap units 11, the same discharging branch 12 or the surge protection module comprises at least two gap units 11, the discharging branches 12 are respectively connected with an external power supply through connection terminals 40, an MCU31, a resistance sampling unit 32 and a communication alarm unit 33 are arranged in the monitoring module 30, the input ends of the resistance sampling unit 32 are respectively connected with two ends of each gap unit 11, the output ends of the resistance sampling unit 32 are respectively connected with the signal input ends of the MCU31, the MCU31 is in communication connection with the communication alarm unit 33, and the MCU31 executes the composite protector detection method in the embodiment 1 when the surge protector works.
In this embodiment, the surge protection module 10 and the monitoring module 30 are connected through the male and female pin holders 20 and then connected together on the guide rail.
In this embodiment, a switch circuit is further disposed in the monitoring module 30 to break the connection loop between the resistor sampling unit 32 and the gap unit 11, so as to avoid the surge in the power supply loop from impacting the monitoring module 30.
In this embodiment, as shown in fig. 4, the number of the gap units 11 is 8, and the gap units may be divided into two discharge branches 12, where each discharge branch 12 includes 4 gap units 11; it is also possible to divide into three discharge branches 12, of which two discharge branches 12 comprise 3 gap units 11 and the other discharge branch 12 comprises 2 gap units 11.
In this embodiment, a circuit board 50 is disposed inside the surge protection module 10 to connect the end portions of the respective gap units 11, and connection wires between the circuit board 50 and the male and female pin holders 20 are not shown.
In this embodiment, the monitoring module 30 reports the lightning protection performance of the surge protector through a bus or a remote signaling module.
Examples
The technical solution of the present invention is a storage medium having stored thereon a computer program which, when executed by a processor, implements the method for detecting a composite surge protector according to embodiment 1.
In the description, each embodiment is described in a progressive manner, and each embodiment is mainly described by the differences from other embodiments, so that the same similar parts among the embodiments are mutually referred.
It should also be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method of detecting a composite surge protector device, comprising:
Responding to an initial sampling signal of a target surge protector, and acquiring initial resistance information of all gap units on at least two discharge branches;
Acquiring current resistance information of all the gap units according to a preset inspection period or in response to an inspection sampling signal of a target surge protector;
Respectively comparing the relation between the current resistance information and the initial resistance information with a preset resistance threshold value, and judging the resistance state information of each gap unit;
Calculating branch state information of each discharge branch according to the resistance state information of each gap unit on each discharge branch;
And determining the overall lightning protection performance of the target surge protector according to the branch state information of all the discharging branches.
2. The method for detecting a composite surge protector according to claim 1, wherein,
Defining each discharge Branch as a Branch (i), wherein i is more than or equal to 2 and less than or equal to N, i and N are natural numbers, and the Branch (i) represents an ith discharge Branch;
Defining each gap unit as an Element (i, j), wherein j is more than or equal to 2 and less than or equal to M, and both the j and M are natural numbers, and the Element (i, j) represents a j-th discharge gap on an i-th discharge branch;
Defining the initial resistance information of the gap unit as R inital, defining the current resistance information of the gap unit as R current and defining the preset resistance threshold as R threshold;
if the current resistance information R current of the gap unit Element (i, j) is smaller than the preset resistance threshold value R threshold, determining that the resistance state information of the gap unit Element (i, j) is a damaged state;
if the current resistance information R current of the gap unit Element (i, j) is not smaller than the preset resistance threshold value R threshold, dividing the resistance state information of the gap unit Element (i, j) into a plurality of health grade states according to the ratio of the current resistance information R current to the initial resistance information R inital.
3. The method for detecting a composite surge protector according to claim 2, wherein,
Polling resistance state information of the gap cell Element (i, j) on each of the discharge branches Branch (i);
If the resistance state information of the first gap unit Element (i, 1) on the discharge Branch (i) is in a damaged state, directly determining that the discharge Branch (i) is an invalid discharge Branch;
If the resistance state information of the first gap unit Element (i, 1) on the discharge Branch (i) is in a certain health level state, continuously inquiring the resistance state information of the next gap unit Element (i, 2) until the polled resistance state information of the gap unit Element (i, j) is in a damaged state or the last gap unit Element (i, M) on the discharge Branch (i).
4. A method for detecting a composite surge protector according to claim 3, wherein,
Defining the Branch state information of the discharge Branch (i) as branch_state (i); after the discharge Branch (i) is defined to be polled, L gap units which are continuously in any health grade state are contained in the discharge Branch (i);
calculating the branch state information: ，
Wherein, P, t and R are constants, L is more than or equal to 1 and less than or equal to M,1<t,
A is the coefficient of performance conversion of the first gap cell Element (i, 1) on the discharge Branch (i), Q is the coefficient of performance conversion of the L-th gap cell Element (i, L) on the discharge Branch (i),For the current resistance information of the first gap cell on the discharge Branch (i)/>For initial resistance information of the first gap cell on the discharge Branch (i)/>For the current resistance information of the L-th gap cell on the discharge Branch (i)/>Is the initial resistance information of the L-th gap cell on the discharge Branch (i).
5. The method for detecting a composite surge protector device according to claim 4, wherein,
Accumulating and summing Branch state information branch_state (i) of the discharge Branch (i) except for an invalid discharge Branch to obtain overall lightning protection performance Protector _PERF of the target surge protector;
Comparing the overall lightning protection performance Protector _PERF of the target surge protector with a preset lightning protection performance threshold PERF_threshold; if the overall lightning protection performance Protector _PERF of the target surge protector is smaller than the overall lightning protection performance Protector _PERF, determining that the lightning protection performance of the target surge protector is unqualified, and sending out alarm information; and if the overall lightning protection performance Protector _PERF of the target surge protector is not smaller than the overall lightning protection performance Protector _PERF, determining that the lightning protection performance of the target surge protector is qualified.
6. The method for detecting a composite surge protector according to claim 4 or 5, wherein the resistance state information of the gap unit Element (i, j) is divided into at least three health grade states according to the ratio of the current resistance information R current to the initial resistance information R inital, and the performance degradation factor corresponding to the gap unit Element (i, j) is given according to different health grade states.
7. The method for detecting a composite surge protector according to claim 6, wherein the lightning protection performance of the corresponding units is defined according to different kinds of the gap unit elements (i, j); and the performance conversion coefficient in the calculation formula of the branch state information is positively correlated with the performance degradation factor and the unit lightning protection performance.
8. The method of any one of claims 1 to 5, wherein the same discharge leg or target surge protector comprises at least two of said gap cells.
9. The utility model provides a surge protector, its characterized in that includes surge protector module and connects through the contact pin seat the monitoring module of surge protector module one side, be provided with a plurality of clearance units in the surge protector module, a plurality of clearance unit constitutes two piece at least discharge branch, every discharge branch is last to include two at least clearance units, same discharge branch or surge protector module includes two kind at least clearance unit, discharge branch is connected with external power source respectively, be provided with MCU, resistance sampling unit and communication alarm unit in the monitoring module, the input of resistance sampling unit is connected respectively each the both ends of clearance unit, the output of resistance sampling unit is connected respectively MCU's signal input part, MCU with communication alarm unit communication connection, MCU carries out the compound surge protector detection method of any one of claims 1 to 8 when surge protector works.
10. A storage medium having stored thereon a computer program which when executed by a processor implements the composite surge protector detection method of any one of claims 1 to 8.
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