CN202111686U

CN202111686U - Surge counter

Info

Publication number: CN202111686U
Application number: CN2011201470896U
Authority: CN
Inventors: 张广国; 宁伟东; 林世福
Original assignee: Aerospace Science and Industry Shenzhen Group Co Ltd
Current assignee: Aerospace Science and Industry Shenzhen Group Co Ltd
Priority date: 2011-05-09
Filing date: 2011-05-09
Publication date: 2012-01-11
Anticipated expiration: 2021-05-09

Abstract

The utility model is applicable to the technical field of power, and provides a surge counter. The surge counter comprises a counting module and a sampling module which is electrically connected with the counting module, wherein the sampling module comprises a voltage sampling module for sampling voltage of a phase line and a current sampling module for sampling current of an earth line; and both the voltage sampling module and the current sampling module are electrically connected with the counting module. Through the surge counter, peak surge in a power circuit can be effectively acquired and counted, and voltage and current characteristics of a power line can be effectively indicated, so that the influence degree of surge on the power line can be intuitively obtained so as to carry out a corresponding coping strategy.

Description

A kind of surge counter

Technical field

The utility model belongs to electric power counter field, relates in particular to a kind of pulse counter.

Background technology

Along with human sciences's development of technology; Electric power electrical apparatus is to integrated, microelectronics technology and high performance development; And electric power electrical apparatus work just need be switched on to it, thereby will produce voltage and current, in the time of electric power electrical apparatus work; Voltage in its internal circuit or electric current may cause that the influence of self or external factor (like thunder and lightning etc.) produces fluctuation; Low when high when causing operating voltage or operating current, when voltage increases when continuing three nanoseconds (part per billion second) or longer time, be called as surge; When the voltage increase only continues one nanosecond or two nanoseconds, be called as spike.And surge has and is divided into two kinds of inner surge and outside surges, and the infringement that outside surge mainly is meant thunder and lightning and is produced generally is to cause tangible damage to equipment; Inner surge mainly is meant the caused voltage transient of operation, depression, spike, high order harmonic component of distribution, microelectronic device etc.; Can make the microelectronic component of big extremely number and fault, deadlock, the lost of life even the damage that unknown cause appears in equipment, influence equipment operating efficiency, produce extra power consumption and expenditure extra cost.

Therefore want effectively to suppress or cushion surge and pulse; At first need voltage or current surge in the testing circuit; Confirm whether circuit voltage or current surge take place; Thereby determining which circuit according to the number of times of surge or spike generation is that needs are installed Surge Protector, and in the prior art, the domestic surge counter of part can only write down outside surge number of times; And part import surge counter can only write down inner surge number of times, and surge counter of the prior art is difficult to outside surge and the inner surge number in simultaneously effective record electricity line.

The utility model content

The utility model is intended to solve in the prior art outside surge and the inner surge number in the effective record electricity line, and a kind of surge counter is provided, this surge counter can effectively detect and writing circuit in outside surge and inner surge number.

A kind of surge counter; Said surge counter comprises counting module; The sampling module that is electrically connected with counting module; Said sampling module comprises and is used to the voltage sample module of phase line voltage of sampling, and is used for the current sample module of sampling site line current, and said voltage sample module and current sample module all are electrically connected with counting module.

Preferably, said Surge Protector also comprises isolation module, and said current sample module and voltage sample module are electrically connected with said counting module through said isolation module respectively.

Preferably, said voltage sample module is voltage sampling circuit or voltage transformer.

Preferably, said current sample module is current sampling circuit or current transformer.

Preferably, said isolation module adopts optical coupling isolation circuit.

Preferably, said counting module comprises that one has the counting unit of display screen.

Preferably, the said counter that has display screen is six counting units.

Preferably, said counting module comprises that also one is used for the supply unit to said counter power supply.

The above technical scheme; Through adopting voltage sample module and current sample module, simultaneously inside surge in the circuit and outside surge are carried out sample detecting, then write down through counting unit detect the number of times of inner surge and outside surge; Can effectively gather and count the spike surge in the power circuit; The voltage-current characteristic that can effectively show power circuit, thus the influence degree of surge can intuitively be obtained to power circuit, so that carry out corresponding countermeasure.

Description of drawings

Fig. 1 is the structured flowchart of a kind of embodiment of the utility model;

Fig. 2 is the structured flowchart of the another kind of embodiment of the utility model;

Fig. 3 is the wiring schematic diagram of a kind of embodiment of the utility model in supply line.

Embodiment

Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with accompanying drawing and embodiment, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

As shown in Figure 1; The utility model provides a kind of surge counter; Said surge counter comprises counting module 1, and the sampling module 2 that is electrically connected with counting module, said sampling module comprise the voltage sample module of at least one the phase line voltage that is used to sample; And being used for the current sample module of sampling site line current, said voltage sample module and current sample module all are electrically connected with counting module.

Counting module is used for the spike surge of being gathered is counted; Said counting module preferably include one have a display screen counting unit, this counting unit can intuitively reflect the number of the spike surge that is write down, the said counter that has display screen preferably adopts six counting units; Be that the full-scale reading that can show on the display screen is 999999; When reaching full-scale reading, if when this counting unit is proceeded to count, said reading becomes 000000 again; Reading 999999 before can be kept at internal system, can obtain current counting through inquiring about its control routine.

The voltage sample module; Be used to connect the phase line that will sample; The spike surge that said phase line is met with carries out voltage sample, and said voltage sample module can be any voltage sampling apparatus of the prior art, and this module preferably adopts voltage sampling circuit or voltage transformer.

The current sample module; Be used to connect the ground wire that will sample; The spike surge that said ground wire is met with carries out current sample, and said current sample module can be any current sampling device of the prior art, and this module preferably adopts current sampling circuit or current transformer.

In conjunction with shown in Figure 2, said surge counter preferably also comprises an isolation module 3, and said current sample module and voltage sample module are electrically connected with said counting module through said isolation module respectively.Said isolation module is used for that the spike surge voltage that said voltage sample module and current sample module are gathered is carried out filtering and isolates; Get rid of the interference of high-voltage signal to said sampled signal; Improve the accuracy that is transferred to the signal in the counting module greatly; Effectively improve the counting precision of surge counter, said isolation module.Said isolation module preferably adopts optical coupling isolation circuit.

Said counting module also preferably includes a supply unit, and said supply unit can be the device that counting unit is supplied power for storage battery or other can be converted into low tension to high-tension electricity.

For example; Use this practical described surge counter that said Three-phase five-wire high-tension line is carried out the surge counting and be example; Said Three-phase five-wire comprises three phase lines-A phase line, B phase line and C phase line, and a center line N line and a ground wire PE line, sampling module 2 corresponding three voltage sample modules and current sample modules of comprising of said surge counter; Three voltage sample modules and a current sample module are electrically connected with said counting module 1 through isolation module 3 respectively; Three voltage sample modules are electrically connected respectively at corresponding phase line, and promptly first voltage sample module is electrically connected with the A phase line, is used to detect the voltage of A phase line; Second voltage sample module is electrically connected with the B phase line, is used to detect the voltage of B phase line; The 3rd voltage sample module is electrically connected with the C phase line, is used to detect the voltage of C phase line.Said current sample module is connected in series in the said ground wire PE line, is used to detect the electric current on the said PE line.

A phase line, B phase line and C phase line are used for to said electric after through the power distribution station distribution, when the signal of telecommunication flows to load through five circuits, when receiving the influencing of thunderbolt, sunspot or other loads; Will on power transmission line, produce spike; Inner surge produces the peak voltage pulse on A phase line, B phase line and C phase line, outside surge can produce the peak current pulse on the PE line, here regulation; When 20% and duration that surge pulse voltage that the voltage sample module collects is higher than the rated voltage U of supply line more than 1 nanosecond the time; The counting unit counting shows once inner surge takes place on this circuit once that counter is presented at the result who is counted on the said display screen; When the voltage sample module collect surge pulse voltage 20% and duration of being higher than the rated voltage U of supply line again more than 1 nanosecond the time; Counting unit is counted once again, and adds up with the count results of last time, after adding up count results is presented on the said display screen; Here three voltage sample modules can remove to gather the voltage signal of the coupled phase line that connects respectively; And to detecting 20% and duration that the surge pulse voltage is higher than the rated voltage U of supply line more than 1 nanosecond the time, counting unit is counted, and the counts on three phase lines is added up.

Equally; For the PE line; When the electric current on the detected PE line of current sample module is higher than 100A (this numerical value can be set according to supply line's concrete voltage and current value size), counting unit is just carried out corresponding counts, shows that outside surge has taken place once in supply line; Counting module adds up the number of times of all detected inner surges and outside surge then; And accumulation result is presented on the display screen of said counter through counter, so that directly read corresponding readings, which circuit the number of times that produces according to surge or spike determines is that needs are installed Surge Protector.

Through above technical scheme, can effectively show the voltage-current characteristic of power circuit, thereby can intuitively obtain the influence degree of surge, so that carry out corresponding countermeasure to power circuit.

The above is merely the preferred embodiment of the utility model; Not in order to restriction the utility model; Any modification of being done within all spirit and principles at the utility model, be equal to replacement and improvement etc., all should be included within the protection range of the utility model.

Claims

1. surge counter; It is characterized in that; Said surge counter comprises counting module, and with the sampling module that said counting module is electrically connected, said sampling module comprises the voltage sample module of at least one the phase line voltage that is used to sample; And being used for the current sample module of sampling site line current, said voltage sample module and current sample module all are electrically connected with counting module.

2. surge counter according to claim 1 is characterized in that, said surge counter also comprises isolation module, and said current sample module and voltage sample module are electrically connected with said counting module through said isolation module respectively.

3. surge counter according to claim 1 and 2 is characterized in that, said voltage sample module is a voltage sampling circuit.

4. surge counter according to claim 1 and 2 is characterized in that, said voltage sample module is a voltage transformer.

5. surge counter according to claim 1 and 2 is characterized in that, said current sample module is a current sampling circuit.

6. surge counter according to claim 1 and 2 is characterized in that, said current sample module is a current transformer.

7. surge counter according to claim 2 is characterized in that, said isolation module adopts optical coupling isolation circuit.

8. surge counter according to claim 1 is characterized in that, said counting module comprises that one has the counting unit of display screen.

9. surge counter according to claim 8 is characterized in that, the said counter that has display screen is six counting units.

10. surge counter according to claim 1 is characterized in that, said counting module comprises that also one is used for the supply unit to said counter power supply.