CN109459714B - Electromagnetic compatibility testing equipment, testing method and system for fault indicator - Google Patents
Electromagnetic compatibility testing equipment, testing method and system for fault indicator Download PDFInfo
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- CN109459714B CN109459714B CN201811171035.6A CN201811171035A CN109459714B CN 109459714 B CN109459714 B CN 109459714B CN 201811171035 A CN201811171035 A CN 201811171035A CN 109459714 B CN109459714 B CN 109459714B
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- 238000010168 coupling process Methods 0.000 claims description 24
- 238000005859 coupling reaction Methods 0.000 claims description 24
- 230000001105 regulatory effect Effects 0.000 claims description 14
- 230000001276 controlling effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
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- 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
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
Abstract
The invention relates to the field of electromagnetic compatibility testing of intelligent power distribution terminal equipment, in particular to electromagnetic compatibility testing equipment, a testing method and a system for a fault indicator, which are used for accurately measuring the anti-interference capability of the fault indicator; the apparatus of the present invention comprises: the device comprises a voltage regulator, a first time relay, a second time relay, a first resistor, a second resistor, electromagnetic compatibility equipment and a coil for hanging a fault indicator to be tested; the voltage regulator is connected with the low-voltage side of the isolation transformer, one end of the first time relay is connected with the output end of the voltage regulator, the other end of the first time relay is connected with the first resistor, the other end of the first resistor is connected with the input end of the electromagnetic compatibility equipment, and the output end of the electromagnetic compatibility equipment is connected with the fault indicator to be tested; the second time relay is connected with the second resistor in series and then connected with the first resistor in parallel.
Description
Technical Field
The invention relates to the field of electromagnetic compatibility testing of intelligent power distribution terminal equipment, in particular to electromagnetic compatibility testing equipment, a testing method and a testing system for a fault indicator.
Background
In recent years, the construction investment of power distribution networks in China is continuously increased, and the power distribution automation master station system is planned to cover all cities in 2018.
Along with the continuous increase of power distribution network construction and transformation, fault indicator equipment is many kinds, and equipment quality is poor, and the power distribution network site environment is complicated, abominable to the hot and humid weather duration in Hunan area is long, and thunderstorm weather is more, and is relatively higher to requirements such as fault indicator overall quality, electromagnetic compatibility ability. At present, when a plurality of domestic professional detection mechanisms check the electromagnetic compatibility of the fault indicator, the actual electromagnetic compatibility resistance of the fault indicator cannot be effectively detected. Therefore, how to effectively measure the anti-interference capability of the fault indicator has become a technical problem to be solved.
Disclosure of Invention
The invention aims to provide electromagnetic compatibility testing equipment, a testing method and a testing system for a fault indicator, so as to accurately measure the anti-interference capability of the fault indicator.
In order to achieve the above object, the present invention provides an electromagnetic compatibility test apparatus for a fault indicator, comprising: the device comprises a voltage regulator, a first time relay, a second time relay, a first resistor, a second resistor, electromagnetic compatibility equipment and a coil for hanging a fault indicator to be tested;
the voltage regulator is connected with any phase line on the low-voltage side of the isolation transformer, one end of the first time relay is connected with the output end of the voltage regulator, the other end of the first time relay is connected with the first resistor, the other end of the first resistor is connected with the input end of the electromagnetic compatibility equipment, and the output end of the electromagnetic compatibility equipment is connected with the fault indicator to be tested;
the second time relay is connected with the second resistor in series and then connected with the first resistor in parallel.
Preferably, the first resistor is connected in series to the normally closed contact of the first time relay, and the second resistor is connected in series to the normally open contact of the second time relay.
Preferably, the first resistor and the second resistor are both adjustable resistors.
Preferably, the electromagnetic compatibility device comprises a generator for generating an interference source and coupling means for coupling the interference source into the line, the coupling means being connected to a coupling line of the generator.
Preferably, the coupling means is a coupling clip.
Preferably, the voltage regulator is a single-phase voltage regulator.
Preferably, a switch for controlling on-off of current is arranged between the input end and the output end of the electromagnetic compatibility device.
Preferably, the switch is an air switch.
As a general technical concept, the present invention also provides a testing method of the above described electromagnetic compatibility testing apparatus for a fault indicator, comprising:
setting one or any combination of the first time relay, the second time relay, the first resistor and the second resistor according to the set current value and the set fault action sequence for detecting the fault indicator to form a current with the set fault action sequence;
the method comprises the steps that an electromagnetic compatibility device generates an interference source, and the interference source is coupled into current and transmitted to a fault indicator to be tested;
and judging whether the anti-interference capability of the fault indicator to be detected is qualified according to the condition of whether the fault indicator to be detected acts.
Preferably, the first resistor and the second resistor are both adjustable resistors, and before the gear of the voltage regulator is adjusted according to the set voltage value, the method further includes the step of adjusting the resistance values of the first resistor and the second resistor to be maximum.
As a general technical concept, the present invention further provides a test system, which comprises the above electromagnetic compatibility test equipment for fault indicator, a voltage regulating module, a setting module connected with the voltage regulating module, an operating module connected with the setting module, and a processing center connected with the operating module;
the voltage regulating module is used for regulating the gear of the voltage regulator according to a set voltage value and outputting voltage;
the setting module is used for setting one or the combination of any one of the first time relay, the second time relay, the first resistor and the second resistor according to a set current value and a set fault action sequence for detecting a fault indicator to form a current with a set fault action sequence;
the operation module is used for controlling the electromagnetic compatibility equipment to generate an interference source, and coupling the interference source into current to be transmitted to the fault indicator to be tested;
and the processing center is used for judging whether the anti-interference capability of the fault indicator to be detected is qualified or not according to the condition of whether the fault indicator to be detected acts or not.
The invention has the following beneficial effects:
the invention provides an electromagnetic compatibility test device, a test method and a test system for a fault indicator.
The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of an electromagnetic compatibility test apparatus for a fault indicator according to a preferred embodiment of the present invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The use of "first," "second," and similar terms in the description and in the claims of the present application do not denote any order, quantity, or importance, but rather the intention is to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
Example 1
Referring to fig. 1, the embodiment provides an electromagnetic compatibility testing device for a fault indicator 2, which includes a voltage regulator, a first time relay T1, a second time relay T2, a first resistor R1, a second resistor R2, an electromagnetic compatibility device, and a coil 1 for hooking the fault indicator 2 to be tested;
the voltage regulator is connected with any phase line of the low-voltage side of the isolation transformer, one end of a first time relay T1 is connected with the output end of the voltage regulator, the other end of a first time relay T1 is connected with a first resistor R1, the other end of a first resistor R1 is connected with the input end of the electromagnetic compatibility equipment, and the output end of the electromagnetic compatibility equipment is connected with the fault indicator 2 to be tested;
the second time relay T2 is connected in series with the second resistor R2 and then connected in parallel with the first resistor R1.
The electromagnetic compatibility test equipment for the fault indicator 2 controls the electromagnetic compatibility equipment to generate an interference source by adjusting the gear output current of the voltage regulator and adjusting the first time relay T1, the second time relay T2, the first resistor R1 and the second resistor R2 to form a current with a set fault action sequence, couples the interference source into the current and inputs the current into the fault indicator 2 to be tested, and can accurately measure the anti-interference capability of the fault indicator 2.
Preferably, in this embodiment, the coil 1 has 50 turns, and the voltage regulator is a single-phase voltage regulator.
As a preferred embodiment of this embodiment, the first resistor R1 is connected in series to the normally closed contact of the first time relay, that is, the first time relay T1 plays a role of time-delay opening in the circuit to control the on-off time of the voltage loop and the current loop in the circuit; the second resistor R2 is connected in series with the normally open contact of the second time relay T2, that is, the second time relay T2 functions as a delay closing to control the on-off time of the voltage loop and the current loop in the circuit. Preferably, the present invention is not limited to the normally closed contact of the first time relay T1 and the normally open contact of the second time relay T2, and the normally open contact of the first time relay T1 and the normally closed contact of the second time relay T2 may be accessed as long as the time-lapse opening or the time-lapse closing can be implemented to form the fault action sequence.
As a preferred implementation manner of this embodiment, the first resistor R1 and the second resistor R2 are both adjustable resistors, and the first resistor R1 and the second resistor R2 are both slide-wire varistors, and the resistances of the resistors can be conveniently set by using the adjustable slide-wire varistors according to the requirements of different experimental scenarios, so that the electromagnetic compatibility testing apparatus is suitable for different testing environments.
As a preferred embodiment of this embodiment, the electromagnetic compatibility testing device comprises a generator for generating the interference source and a coupling means for coupling the interference source into the line, the coupling means being connected to a coupling line of the generator. And, the coupling device is a coupling clip.
As a preferred embodiment of this embodiment, a switch for controlling on/off of current is provided between the input end and the output end of the electromagnetic compatibility device. And the switch is an air switch. The air switch can control the on-off of the current in the circuit, and the flexibility of circuit control can be improved.
Example 2
The embodiment provides a testing method applied to the testing equipment, which comprises the following steps:
adjusting the gear of the voltage regulator according to the set voltage value, and outputting voltage;
adjusting one or any combination of the first time relay T1, the second time relay T2, the first resistor R1 and the second resistor R2 according to the set current value and the set fault action sequence for detecting the fault indicator 2 to form a current with the set fault action sequence;
the electromagnetic compatibility equipment generates an interference source, couples the interference source into the current and transmits the current to the fault indicator 2 to be tested;
and judging whether the anti-interference capability of the fault indicator 2 to be detected is qualified according to the condition of whether the fault indicator 2 to be detected acts.
As a preferred embodiment of this embodiment, in practical application, the input end of the voltage regulator is connected to the low-voltage side of the isolation transformer to obtain 220V for the voltage regulator to use.
Specifically, when the anti-interference capability of the fault indicator 2 to be tested is tested, firstly, the voltage regulator is used for getting electricity on the low-voltage side of the isolation transformer, the gear of the voltage regulator is located at a zero position, then the gear output voltage of the voltage regulator required by the operation of relevant devices of the experiment can be regulated according to the set voltage, and a stable output state is kept, then one end of the first resistor R1 is connected in series with the normally closed contact of the first time relay T1, the other end of the first resistor R1 is connected with the input end of the electromagnetic compatibility equipment, the second resistor R2 is connected in series with the second time relay T2 and then connected in parallel with the first resistor R1, the gear of the resistance of the first resistor R1 is regulated according to the set fault action sequence to change the resistance, and the delayed off time of the first time relay T1 is set; and the resistance value of the second resistor R2 is adjusted to change the resistance value, the delay closing time of the second time relay T2 is set, the state sequence control is completed, and the current which accords with the fault action sequence is formed in the circuit. It should be noted that the first resistor R1 and the second resistor R2 are both adjustable resistors, in this embodiment, the first resistor R1 and the second resistor R2 are both slide-wire varistors, and before the first resistor R1 and the second resistor R2 are connected, the resistance values thereof are all adjusted to the maximum value, and then the resistance values of the first resistor R1 and the second resistor R2 are adjusted from the maximum value to the minimum value according to the set current, so that the circuit can be protected from the bad consequences of burning out the device due to the excessive instantaneous current.
The air switch is pushed to the closed position, under the action of an interference source generated by the electromagnetic compatibility equipment, the current received by the fault indicator 2 to be detected is the current added to the interference source through the electromagnetic compatibility equipment in a coupling mode, under the action of the interference source, the current originally generated according to the set value can be amplified, and the amplified current can enable the fault indicator 2 to act. Further, whether the fault indicator 2 to be tested acts or not is detected, for example, whether a flashing light prompts or not is detected, if the flashing light does not exist, the anti-interference capability of the fault indicator 2 to be tested is considered to be strong, otherwise, if the flashing light prompts, the anti-interference capability of the fault indicator 2 to be tested is indicated to be weak. The anti-interference capability of the fault indicator 2 to be detected can be detected efficiently and accurately.
In addition, it should be noted that, before the experiment starts, a fault sequence enabling the fault indicator 2 to be tested to generate an action is added to the fault indicator 2 to be tested, and if the fault indicator 2 can generate an action under the fault sequence, the fault indicator 2 to be tested is considered to be intact and can work normally. In the experiment, the set fault action sequence is a fault sequence which does not allow the fault indicator 2 to be tested to act, and preferably, the current value in the fault sequence is set to be smaller than the current value in the fault sequence before the experiment starts, because the current is amplified under the action of the interference source, the fault indicator 2 to be tested acts, and therefore, if the fault indicator 2 to be tested does not act, the anti-interference capability of the fault indicator 2 to be tested is strong. It should be noted that, in the present embodiment, the action sequences loaded to the fault indicator 2 are all fault action sequences in the present embodiment, but in the present embodiment, the action sequence loaded before the start of the experiment and the action sequence loaded in the experiment do not coincide with each other.
As described above, the present invention provides an electromagnetic compatibility testing device for a fault indicator 2 and a testing method thereof, which can accurately measure the anti-interference capability of the fault indicator 2 by adjusting the gear output current of the voltage regulator, adjusting the first time relay T1, the second time relay T2, the first resistor R1 and the second resistor R2 to form a current with a set fault action sequence, controlling the electromagnetic compatibility testing device to generate an interference source, and coupling the interference source into the current to be input into the fault indicator 2 to be tested.
Example 3
The embodiment provides a test system, which comprises the electromagnetic compatibility test equipment for the fault indicator, a pressure regulating module, a setting module connected with the pressure regulating module, an operating module connected with the setting module, and a processing center connected with the operating module;
the voltage regulating module is used for regulating the gear of the voltage regulator according to the set voltage value and outputting voltage;
the setting module is used for setting one or the combination of any one of a first time relay, a second time relay, a first resistor and a second resistor according to the set current value and the set fault action sequence for detecting the fault indicator 2 to form a current with the set fault action sequence;
the operation module is used for controlling the electromagnetic compatibility equipment to generate an interference source, and coupling the interference source into the current to be transmitted to the fault indicator to be tested;
and the processing center is used for judging whether the anti-interference capability of the fault indicator 2 to be detected is qualified according to the condition of whether the fault indicator 2 to be detected acts.
As described above, the present invention provides an electromagnetic compatibility testing apparatus, a testing method and a system for a fault indicator, which can accurately measure the anti-interference capability of the fault indicator by adjusting the gear output current of a voltage regulator, adjusting one or any combination of a first time relay, a second time relay, a first resistor and a second resistor to form a current with a set fault action sequence, controlling the electromagnetic compatibility apparatus to generate an interference source, and coupling the interference source to the current to input the current to the fault indicator to be tested.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. An electromagnetic compatibility test apparatus for a fault indicator, comprising: the device comprises a voltage regulator, a first time relay, a second time relay, a first resistor, a second resistor, electromagnetic compatibility equipment and a coil (1) for hanging a fault indicator (2) to be tested;
the voltage regulator is connected with any phase line on the low-voltage side of the isolation transformer, one end of the first time relay is connected with the output end of the voltage regulator, the other end of the first time relay is connected with the first resistor, the other end of the first resistor is connected with the input end of the electromagnetic compatibility equipment, and the output end of the electromagnetic compatibility equipment is connected with the fault indicator (2) to be tested;
the second time relay is connected with the second resistor in series and then connected with the first resistor in parallel; the first resistor is connected in series with a normally closed contact of the first time relay, and the second resistor is connected in series with a normally open contact of the second time relay; the first resistor and the second resistor are both adjustable resistors;
setting one or any combination of the first time relay, the second time relay, the first resistor and the second resistor according to the set current value and the set fault action sequence for the fault indicator (2) to be tested to form a current with the set fault action sequence;
the set fault action sequence is a fault sequence which does not allow the fault indicator (2) to be tested to act;
the method comprises the steps that an electromagnetic compatibility device generates an interference source, and the interference source is coupled into current and transmitted to a fault indicator (2) to be tested;
and judging whether the anti-interference capability of the fault indicator (2) to be detected is qualified according to the condition of whether the fault indicator (2) to be detected acts.
2. An emc testing device according to claim 1, wherein the emc testing device comprises a generator for generating a source of interference and coupling means for coupling the source of interference into a line, the coupling means being connected to a coupling line of the generator.
3. The apparatus for testing electromagnetic compatibility of a fault indicator of claim 2 wherein the coupling means is a coupling clip.
4. The apparatus of claim 1, wherein the voltage regulator is a single-phase voltage regulator.
5. The apparatus of claim 1, wherein a switch for controlling on/off of current is disposed between the input terminal and the output terminal of the apparatus.
6. The apparatus for testing electromagnetic compatibility of a fault indicator of claim 5, wherein the switch is an air switch.
7. A method for testing an electromagnetic compatibility testing apparatus for a fault indicator according to any one of claims 1 to 6, comprising: adjusting the gear of the voltage regulator according to a set voltage value, and outputting voltage;
setting one or any combination of the first time relay, the second time relay, the first resistor and the second resistor according to the set current value and the set fault action sequence for the fault indicator (2) to be tested to form a current with the set fault action sequence;
the method comprises the steps that an electromagnetic compatibility device generates an interference source, and the interference source is coupled into current and transmitted to a fault indicator (2) to be tested;
and judging whether the anti-interference capability of the fault indicator (2) to be detected is qualified according to the condition of whether the fault indicator (2) to be detected acts.
8. The method of claim 7, wherein the first resistor and the second resistor are adjustable resistors, and further comprising, prior to said adjusting the gear of the voltage regulator according to the set voltage value:
and adjusting the resistance values of the first resistor and the second resistor to be maximum.
9. A test system, characterized in that the test system comprises the electromagnetic compatibility test equipment for the fault indicator according to any one of the claims 1 to 6, and further comprises a voltage regulating module, a setting module connected with the voltage regulating module, an operating module connected with the setting module, and a processing center connected with the operating module;
the voltage regulating module is used for regulating the gear of the voltage regulator according to a set voltage value and outputting voltage;
the setting module is used for setting one or the combination of any one of the first time relay, the second time relay, the first resistor and the second resistor according to a set current value and a set fault action sequence for the fault indicator (2) to be tested to form a current with a set fault action sequence;
the operation module is used for controlling the electromagnetic compatibility equipment to generate an interference source and coupling the interference source into current to be transmitted to the fault indicator (2) to be tested;
and the processing center is used for judging whether the anti-interference capability of the fault indicator (2) to be detected is qualified or not according to the condition of whether the fault indicator (2) to be detected acts or not.
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| CN111856173B (en) * | 2019-04-26 | 2023-07-25 | 中国北方车辆研究所 | Fault detection device and method for electromagnetic compatibility system |
| CN112731239A (en) * | 2020-12-21 | 2021-04-30 | 青岛鼎信通讯股份有限公司 | Function test tool for fault indicator |
| CN115792441B (en) * | 2022-11-23 | 2024-02-13 | 苏州科标检测有限公司 | Radiation anti-interference test method and test system |
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