CN104898004A - Series compensation analog quantity channel precision measuring device and method - Google Patents
Series compensation analog quantity channel precision measuring device and method Download PDFInfo
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- CN104898004A CN104898004A CN201510350332.7A CN201510350332A CN104898004A CN 104898004 A CN104898004 A CN 104898004A CN 201510350332 A CN201510350332 A CN 201510350332A CN 104898004 A CN104898004 A CN 104898004A
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- 238000012360 testing method Methods 0.000 claims abstract description 25
- 238000005259 measurement Methods 0.000 claims description 15
- 230000000052 comparative effect Effects 0.000 claims description 6
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- 230000000295 complement effect Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract 3
- 238000013480 data collection Methods 0.000 abstract 1
- 238000004088 simulation Methods 0.000 abstract 1
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- 230000000694 effects Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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Abstract
The invention discloses a series compensation analog quantity channel precision measuring device and method. The device comprises a current-voltage conversion part connected with a series compensation protection system simulation analog data collection board, a voltage measuring part connected with the current-voltage conversion part, and a judging part connected with the voltage measuring part, wherein the current-voltage conversion part is used for converting a collected analog current into an analog voltage, and the judging part is used for judging whether the series compensation analog quantity channel precision is qualified. The method comprises the steps of: collecting the analog current; converting the analog current into the analog voltage; measuring the analog voltage; and utilizing the analog voltage to judge whether the series compensation analog quantity channel precision is qualified. The series compensation analog quantity channel precision measuring device and method provided by the invention are capable of carrying out a series compensation analog quantity channel precision test under the operation condition of a series compensation high voltage device, so that the power failure process and the power failure time of the series compensation device are effectively reduced, and the conveying capacity of a super-high voltage power transmission line is improved.
Description
Technical field
The present invention relates to field of relay protection in power, particularly relate to a kind of string and mend analog quantity channel accuracy measuring device and method.
Background technology
String is mended analog quantity channel accuracy test and is mended one of important test of protection system as string; mending in protection system second trial at string is required project, is used for the analog data Signal transmissions of checking from string complement system high voltage platform equipment to the precision in land protection system.To ensure to go here and there the accuracy of mending the current-mode analog quantity that protection system gathers in stable state, transient state process, to improve sensitivity, the reliability that string mends protection system.
Mend in analog quantity channel accuracy test at string in the past, need to carry out under string mends device power down mode.The relay testing instrument that can trigger alternating current simulating signal is installed on string and mends high voltage platform measurement case place, and the current output terminal mouth of tester and the secondary current connection terminal measured in case are carried out physical connection by service test line; The current value (such as 5A, 10A or 15A) of preset respective value in tester, triggers the output switch of tester, makes current value correctly pass into string and mends protection system; On ground, string mends protection system place; check and record the current values of display; and compare with preset current values in tester; judge its current-mode analog quantity data whether correct, error whether regulation ± 5% scope in; as exceeded this scope, then analog quantity accuracy test result is defective.
Mend analog quantity channel accuracy test process need just because of existing string to carry out under string mends device power down mode, therefore just add power failure flow process and power off time that string mends device, reduce power delivery capabilities.
Summary of the invention
For solving the problem, the invention provides a kind of string and mend analog quantity channel accuracy measuring device and method, string can be carried out under string mends high-tension apparatus operating condition and mend analog quantity channel accuracy test, thus effectively can reduce power failure flow process and the power off time that string mends device, improve the transmission capacity of extra high voltage network.
One string provided by the invention mends analog quantity channel accuracy measuring device, comprising:
The current-voltage converting member that protection system analog data acquisition plate is connected is mended, for converting the analog current collected to analog voltage with string;
The voltage measurement parts be connected with described current-voltage converting member;
Whether the decision means be connected with described voltage measurement parts is qualified for judging string benefit analog quantity channel precision.
Preferably; mend in analog quantity channel accuracy measuring device at above-mentioned string; described string is mended protection system analog data acquisition plate and is provided with the first debugging interface; described current-voltage converting member is provided with the second debugging interface, and described first debugging interface is identical with the interface shape of described second debugging interface.
Preferably, mend in analog quantity channel accuracy measuring device at above-mentioned string, described current-voltage converting member is provided with multiple divider resistance, and the quantity of described divider resistance is identical with the described quantity of mending analog quantity channel of going here and there.
Preferably, mend in analog quantity channel accuracy measuring device at above-mentioned string, described voltage measurement parts are digital multimeter.
Preferably, mend in analog quantity channel accuracy measuring device at above-mentioned string, described current-voltage converting member is provided with multiple test board terminal, and described digital multimeter is connect by test pencil and described test board connecting terminals.
Preferably, mend in analog quantity channel accuracy measuring device at above-mentioned string, described decision means comprises storage unit, comparing unit and judging unit, described storage unit mends the standard voltage value of analog quantity channel for storing described string, described comparing unit is used for the measured value of described string benefit analog quantity channel and described standard voltage value to compare, obtain comparative result, described judging unit is used for according to described comparative result, judges that whether described string complementary modulus analog quantity precision is qualified.
One string provided by the invention mends analog quantity channel accuracy measurement method, comprising:
Gather analog current;
Convert described analog current to analog voltage;
Measure described analog voltage;
Utilize described analog voltage, judge that whether string benefit analog quantity channel precision is qualified.
Known by foregoing description, the invention provides a kind of string and mend analog quantity channel accuracy measuring device and method, protection system analog data acquisition plate can be mended from string and gather analog current signal, and convert current signal to analog voltage signal, measure described analog voltage signal again, judge that whether string benefit analog quantity channel precision is qualified finally by judgment means, this makes it possible under string mends high-tension apparatus operating condition, carry out string and mend analog quantity channel accuracy test, thus effectively can reduce power failure flow process and the power off time that string mends device, improve the transmission capacity of extra high voltage network.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
A kind of schematic diagram mending analog quantity channel accuracy measuring device of going here and there that Fig. 1 provides for the embodiment of the present application;
The schematic diagram of the another kind string benefit analog quantity channel accuracy measuring device that Fig. 2 provides for the embodiment of the present application;
A kind of schematic diagram mending analog quantity channel accuracy measurement method of going here and there that Fig. 3 provides for the embodiment of the present application.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The one string that the embodiment of the present application provides mends analog quantity channel accuracy measuring device as shown in Figure 1, a kind of schematic diagram mending analog quantity channel accuracy measuring device of going here and there that Fig. 1 provides for the embodiment of the present application.This device comprises:
The current-voltage converting member 102 that protection system analog data acquisition plate 101 is connected is mended, for converting the analog current collected to analog voltage with string;
The voltage measurement parts 103 be connected with described current-voltage converting member 102;
Whether the decision means 104 be connected with described voltage measurement parts 103 is qualified for judging string benefit analog quantity channel precision.
Known by foregoing description, the one string that the embodiment of the present application provides mends analog quantity channel accuracy measuring device, protection system analog data acquisition plate 101 can be mended from string and gather analog current signal, and convert current signal to analog voltage signal, measure described analog voltage signal again, judge that whether string benefit analog quantity channel precision is qualified finally by judgment means 104, this makes it possible to carry out string complementary modulus analog quantity accuracy test under string mends high-tension apparatus operating condition, thus effectively can reduce power failure flow process and the power off time that string mends device, improve the transmission capacity of extra high voltage network.
The another kind string that the embodiment of the present application provides mends analog quantity channel accuracy measuring device as shown in Figure 2, the schematic diagram of the another kind string benefit analog quantity channel accuracy measuring device that Fig. 2 provides for the embodiment of the present application.In the apparatus, comprise optical cable 201, for connecting protection system analog data acquisition plate 202 and series compensation platform (not shown), wherein, on protection system analog data acquisition plate 202, label is the interface of 1 to 6 is optical fiber ST interface, this protection system analog data acquisition plate 202 is connected with current-voltage converting member 204 by exclusive data patchcord 203, wherein, label on this current-voltage converting member 204 is the port of 7-13 is test board terminal, described current-voltage converting member 204 is connected with digital multimeter 206 by digital multimeter test pencil 205, described digital multimeter test pencil 205 is by connecing from different described test board connecting terminals, realize the measurement for the analog voltage of different passages.Here digital multimeter 206, as a kind of voltage measurement parts, obtains analog voltage for measuring.
Mend in analog quantity channel accuracy measuring device at above-mentioned string; described string mends protection system analog data acquisition plate 101 can preferably be provided with the first debugging interface; described current-voltage converting member 102 is preferably provided with the second debugging interface, and described first debugging interface is identical with the interface shape of described second debugging interface.
Mend in analog quantity channel accuracy measuring device at above-mentioned string, described current-voltage converting member is provided with multiple divider resistance, and the quantity of described divider resistance is identical with the described quantity of mending analog quantity channel of going here and there.Here it is emphasized that, each divider resistance matches with the current value of corresponding passage, by debugging in advance, suitable divider resistance is selected according to electric current, the magnitude of voltage making this passage corresponding in normal precision situation is a preset value, this preset value can be preferably integer, thus provides convenience for follow-up deterministic process.What also need to illustrate is, a preferred channel voltage standard value of the present embodiment as shown in Table 1 below, table 1 is only one of them determination methods, after staff's measurement obtains the analog voltage of certain passage, just can judge with reference to table 1 intuitively, if the analog voltage of this passage recorded is identical with the standard voltage value in table 1 or the deviate of the two in default allowed band, then be judged as that the precision of this passage meets the demands, measurement result is qualified, otherwise be judged as defective, and on the other hand, also can select another scheme: special judging unit is set, after receiving analog voltage, can contrast with its standard voltage value stored inner automatically, if compare the difference therebetween that obtains within admissible preset range, then be judged as that the precision of this passage is qualified, otherwise be judged as defective.
Table 1 is gone here and there and is mended analog quantity channel precision measure standard voltmeter
| Channel number | Tunnel name | Load current value | Standard voltage value |
| 1 | Line current | 13.636A | 6.0V |
| 2 | Out-of-balance current | 3.333A | 6.0V |
| 3 | Sparking distance electric current | 0.667A | 6.0V |
| 4 | Platform fault electric current | 0.667A | 6.0V |
| 5 | MOV minimum current | 2.121A | 6.0V |
| 6 | MOV high level electric current | 21A | 1.8V |
As further preferred embodiment, mend in analog quantity channel accuracy measuring device at above-mentioned string, described decision means can comprise storage unit, comparing unit and judging unit, described storage unit mends the standard voltage value of analog quantity channel for storing described string, described comparing unit is used for the measured value of described string benefit analog quantity channel and described standard voltage value to compare, obtain comparative result, described judging unit is used for according to described comparative result, judges that whether described string complementary modulus analog quantity precision is qualified.By the preferred embodiment, can more automation and intelligentification whether judge that string mends analog quantity channel precision qualified, without the need to manually going contrast, thus improve work efficiency.
Known by foregoing description, the one string that the embodiment of the present application provides mends analog quantity channel accuracy measuring device, string can be carried out under string mends high-tension apparatus operating condition and mend analog quantity channel accuracy test, thus effectively can reduce power failure flow process and the power off time that string mends device, improve the transmission capacity of extra high voltage network, and when utilizing this measurement mechanism to measure, only need carry out work in land protection indoor, high voltage platform measurement case place is mended without the need to relay testing instrument being installed on string, therefore staff without using on cat ladder to series compensation platform, reduce the manual labor of test clerk, improve work efficiency and personnel safety.
The one string that the embodiment of the present application provides mends analog quantity channel accuracy measurement method as shown in Figure 3, a kind of schematic diagram mending analog quantity channel accuracy measurement method of going here and there that Fig. 3 provides for the embodiment of the present application.The method comprises:
S1: gather analog current;
In this step, do not need string to mend high-tension apparatus to have a power failure, but directly gather analog current, subsequent step carries out relevant treatment to this electric current again, just can mend analog quantity channel precision to string to measure accurately, therefore, it is possible to effectively reduce power failure flow process and the power off time that string mends device, improve the transmission capacity of extra high voltage network.
S2: convert described analog current to analog voltage;
In this step, can by arranging the mode of divider resistance, convert analog current to analog voltage, it should be noted that, the resistance of the divider resistance that each passage is corresponding will match with the electric current under the normal precision of this passage, finally make the analog voltage under this passage normal precision be an integer, judge to facilitate follow-up precision.
S3: measure described analog voltage;
In this step, measuring the effect obtaining this analog voltage is: as the follow-up basis compared with standard voltage value.
S4: utilize described analog voltage, judges that whether string benefit analog quantity channel precision is qualified.
In this step, by comparing measuring the described analog voltage obtained with the standard voltage value preset, if difference is therebetween in preset range, is then judged as that this string benefit analog quantity channel precision is qualified, otherwise is judged as defective.
The one string that the embodiment of the present application provides mends analog quantity channel accuracy measurement method, string can be carried out under string mends high-tension apparatus operating condition and mend analog quantity channel accuracy test, thus effectively can reduce power failure flow process and the power off time that string mends device, improve the transmission capacity of extra high voltage network.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. string mends an analog quantity channel accuracy measuring device, it is characterized in that, comprising:
The current-voltage converting member that protection system analog data acquisition plate is connected is mended, for converting the analog current collected to analog voltage with string;
The voltage measurement parts be connected with described current-voltage converting member;
Whether the decision means be connected with described voltage measurement parts is qualified for judging string benefit analog quantity channel precision.
2. string according to claim 1 mends analog quantity channel accuracy measuring device, it is characterized in that,
Described string is mended protection system analog data acquisition plate and is provided with the first debugging interface, and described current-voltage converting member is provided with the second debugging interface, and described first debugging interface is identical with the interface shape of described second debugging interface.
3. string according to claim 1 mends analog quantity channel accuracy measuring device, and it is characterized in that, described current-voltage converting member is provided with multiple divider resistance, and the quantity of described divider resistance is identical with the described quantity of mending analog quantity channel of going here and there.
4. string according to claim 1 mends analog quantity channel accuracy measuring device, and it is characterized in that, described voltage measurement parts are digital multimeter.
5. string according to claim 4 mends analog quantity channel accuracy measuring device, and it is characterized in that, described current-voltage converting member is provided with multiple test board terminal, and described digital multimeter is connect by test pencil and described test board connecting terminals.
6. the string according to any one of claim 1-5 mends analog quantity channel accuracy measuring device, it is characterized in that, described decision means comprises storage unit, comparing unit and judging unit, described storage unit mends the standard voltage value of analog quantity channel for storing described string, described comparing unit is used for the measured value of described string benefit analog quantity channel and described standard voltage value to compare, obtain comparative result, described judging unit is used for according to described comparative result, judges that whether described string complementary modulus analog quantity precision is qualified.
7. string mends an analog quantity channel accuracy measurement method, it is characterized in that, comprising:
Gather analog current;
Convert described analog current to analog voltage;
Measure described analog voltage;
Utilize described analog voltage, judge that whether string benefit analog quantity channel precision is qualified.
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| CN201510350332.7A CN104898004A (en) | 2015-06-23 | 2015-06-23 | Series compensation analog quantity channel precision measuring device and method |
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| CN201510350332.7A CN104898004A (en) | 2015-06-23 | 2015-06-23 | Series compensation analog quantity channel precision measuring device and method |
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| CN105242138A (en) * | 2015-10-08 | 2016-01-13 | 南京南瑞继保电气有限公司 | Testing apparatus and method for fixed series compensation protection |
| CN105866572A (en) * | 2016-03-28 | 2016-08-17 | 华北电力科学研究院有限责任公司 | System for automatically generating series capacitor compensation protection action and working method thereof |
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2015
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Cited By (2)
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| CN105242138A (en) * | 2015-10-08 | 2016-01-13 | 南京南瑞继保电气有限公司 | Testing apparatus and method for fixed series compensation protection |
| CN105866572A (en) * | 2016-03-28 | 2016-08-17 | 华北电力科学研究院有限责任公司 | System for automatically generating series capacitor compensation protection action and working method thereof |
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Application publication date: 20150909 |