CN113917372B - Method and device for checking cross interconnection system without unpacking - Google Patents
Method and device for checking cross interconnection system without unpacking Download PDFInfo
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- CN113917372B CN113917372B CN202111210825.2A CN202111210825A CN113917372B CN 113917372 B CN113917372 B CN 113917372B CN 202111210825 A CN202111210825 A CN 202111210825A CN 113917372 B CN113917372 B CN 113917372B
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- G—PHYSICS
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- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
- G01R31/67—Testing the correctness of wire connections in electric apparatus or circuits
Abstract
A method and a device for checking a cross interconnection system without unpacking and charging comprise the following steps: step 1, establishing a standard test characteristic table of a cross interconnection box, which comprises the following steps: cross-connect form and standard test features thereof; step 2, under the condition of no box opening and electrification, applying a signal with a set frequency to a set cross interconnection box, detecting and recording the minimum phase of the coupling signal amplitude at a corresponding grounding box; step 3, substituting the actual test features of the step 2 into the cross-connection box test feature table in the step 1, judging whether the actual test features are matched with the cross-connection box test feature table, if so, obtaining a cross-connection form, executing the step 4, and if not, executing the box opening and defect eliminating operation; step 4, judging whether a complete cross interconnection section is completed, if yes, checking to pass; if not, opening any cross interconnection box, and adjusting the transposition order. The application simplifies the operation and maintenance program, reduces the time consumption and improves the operation safety.
Description
Technical Field
The application belongs to the technical field of high-voltage power cables, and particularly relates to a method for checking a cross interconnection system without unpacking.
Background
In the prior art, the high-voltage cable grounding system comprises a grounding box, a cross-connecting box, a protective layer protector, a grounding wire, a cross-connecting wire and the like. The cross interconnection box is suitable for cross interconnection of the metal shielding layers of the single-core cross-linked cables with high voltage (35 kV, 66kV, 110kV and 220 kV) levels, can limit the rise of overvoltage on two sides of the sheath and the insulating joint, limit the induced voltage of the metal sheath, and reduce and eliminate the annular current on the sheath. The fault of the cross interconnection leads to the failure of the grounding system, the generation of a suspension potential, or the induction current of the metal protection layer is overlarge, and the cable fault is caused in severe cases. After the grounding system is destroyed, the middle two sections of the three sections of cables which are in cross connection are completely suspended due to the theft of the cross connection wires, and the suspension voltage of the suspended section of cables can reach 4-6 kV or even higher.
Prior art document 1 (CN 108680816B) discloses a method for checking the electrification of a system of high-voltage cable cross-connection ground, which mainly comprises the steps of: 1) Checking the wiring modes of two cross interconnection boxes in one cross interconnection section, and if the wiring modes of the two cross interconnection boxes are consistent, directly entering the next step; otherwise, rectifying the wiring mode, and then entering the next step; 2) Applying signals with specific frequency to each connecting plate of the cross interconnecting plates in the first cross interconnecting box respectively, then receiving the signals in the adjacent grounding boxes, and recording the phase line with highest signal intensity when the signals are applied each time; 3) Listing theoretical values of signals in correct cross transposition under the wiring mode according to the wiring mode of the first cross interconnection box; 4) Matching the recorded result of the step 2) with the theoretical value of the step 3), and if the matching is unsuccessful, rectifying the wiring mode of the coaxial cable; if the recorded result of the step 2) is exactly matched with the theoretical value in the step 3), repeating the steps 2) to 4) to continuously test the second cross-connection box; 5) Comparing the test results of the first cross-connection box and the second cross-connection box, if the directions of the inner core and the outer core of the coaxial cable in the two cross-connection boxes are inconsistent, the wiring mode of the cross-connection boxes is wrong, if the directions are consistent, the wiring mode of the cross-connection boxes is correct, and the test is finished. The disadvantage of the prior art document 1 is that in step 1, whether the wiring modes of two cross-connection boxes are consistent is checked, and the cross-connection boxes need to be opened; on this basis, in step 2, when a specific frequency signal is applied, it is also necessary to build on the basis of opening the crossover. If the complete cross-connect system live check step is performed, the result of the check is that the wires are correct, so that the time for operation and maintenance is increased, and because of the live operation, higher requirements are placed on safety measures.
Disclosure of Invention
In order to solve the defects in the prior art, the application aims to provide a method for checking a cross interconnection system without opening a box, which aims to judge whether wiring in a No. 2 box and a No. 3 box is in a cross interconnection mode or not in an electrified manner under the condition that the cross interconnection box is not opened, and whether cross interconnection cooperation between the No. 2 box and the No. 3 box is completed by a correct cross interconnection section or not, and the cross interconnection box is opened to adjust the transposition sequence only when cross interconnection is replaced by dislocation.
The application adopts the following technical scheme. A first aspect of the present application provides a method of non-unpacking live-check cross-connect systems, comprising the steps of:
step 1, establishing a standard test characteristic table of a cross interconnection box, which comprises the following steps: cross-connect form and standard test features thereof;
step 2, under the condition of no box opening and electrification, applying a signal with a set frequency to a set cross interconnection box, detecting and recording the minimum phase of the coupling signal amplitude at a corresponding grounding box;
step 3, substituting the actual test features of the step 2 into the cross-connection box test feature table in the step 1, judging whether the actual test features are matched with the cross-connection box test feature table, if so, obtaining a cross-connection form, executing the step 4, and if not, executing the box opening and defect eliminating operation;
step 4, judging whether a complete cross interconnection section is completed, if yes, checking to pass; if not, opening any cross interconnection box, and adjusting the transposition order.
Preferably, step 1 specifically includes:
step 1.1, enumerating all cross interconnection forms of the 2# cross interconnection boxes and the 3# cross interconnection boxes, and numbering each cross interconnection form;
step 1.2, compiling standard test characteristics aiming at each cross interconnection form of step 1.1, wherein the standard test characteristics are formed by expected test results of each cross interconnection form of a 2# cross interconnection box and a 3# cross interconnection box, and a cross interconnection box standard test characteristic table is formed.
Preferably, step 1.1 specifically comprises:
enumerating all cross-connect versions of the 3# cross-connect boxes, numbering each cross-connect version, comprising:
the coaxial cable inner core is connected with a 4# grounding box, the outer core is connected with a 2# cross-connecting box, the A phase of the 3# cross-connecting box is connected with the B phase, the B phase is connected with the C phase, and the C phase is connected with the a phase;
the coaxial cable inner core is connected with a 2# cross-connecting box, the outer core is connected with a 4# grounding box, an A phase of the 3# cross-connecting box is connected with a B phase, a B phase of the 3# cross-connecting box is connected with a C phase, and the C phase of the 3# cross-connecting box is connected with a phase;
the coaxial cable inner core is connected with a 4# grounding box, the outer core is connected with a 2# cross-connecting box, an A phase and a C phase of the 3# cross-connecting box are connected, a B phase and a phase are connected, and a C phase and a B phase are connected;
the serial number 04, the coaxial cable inner core is connected with a 2# cross-connecting box, the outer core is connected with a 4# grounding box, the A phase of the 3# cross-connecting box is connected with a C phase, the B phase is connected with a phase, and the C phase is connected with a B phase;
enumerating all cross-connect versions of the 2# cross-connect boxes, numbering each cross-connect version, comprising:
the coaxial cable inner core is connected with a 3# cross-connection box, the outer core is connected with a 1# grounding box, an A phase of the 2# cross-connection box is connected with a B phase, a B phase of the 2# cross-connection box is connected with a C phase, and the C phase of the 2# cross-connection box is connected with a phase;
the coaxial cable inner core is connected with a 1# grounding box, the outer core is connected with a 3# cross-connecting box, the A phase of the 2# cross-connecting box is connected with a B phase, the B phase is connected with a C phase, and the C phase is connected with a phase;
the serial number 07, the coaxial cable inner core is connected with a 3# cross-connecting box, the outer core is connected with a 1# grounding box, the A phase of the 2# cross-connecting box is connected with a C phase, the B phase is connected with a phase, and the C phase is connected with a B phase;
and the serial number 08, the coaxial cable inner core is connected with a 1# grounding box, the outer core is connected with a 3# cross-connecting box, the A phase of the 2# cross-connecting box is connected with a C phase, the B phase is connected with a phase, and the C phase is connected with a B phase.
Preferably, the cross-connect box standard test signature table of step 1.2 is represented as a table,
table 1 3 minimum phase of amplitude of coupling signal detected at bin 4 when bin 4 is signaled
Table 22 phase with minimum amplitude of the coupling signal detected at bin # 1 when bin # is signaled
Preferably, step 2 specifically includes:
under the condition of no box opening and electrification, a signal with set frequency is applied to a first coaxial cable at the lower end part of the 2# cross-connection box, the minimum phase of the coupling signal amplitude is detected and recorded in the 1# grounding box, a signal with set frequency is applied to a second coaxial cable at the lower end part of the 2# cross-connection box, the minimum phase of the coupling signal amplitude is detected and recorded in the 1# grounding box, a signal with set frequency is applied to a third coaxial cable at the lower end part of the 2# cross-connection box, the minimum phase of the coupling signal amplitude is detected and recorded in the 1# grounding box, the obtained three minimum phases of the coupling signal amplitude are combined into the actual test characteristic of the 2# cross-connection box,
applying a signal with a set frequency to a first coaxial cable at the lower end part of the 3# cross-connection box, detecting and recording the minimum amplitude phase of the coupling signal in the 4# grounding box, applying a signal with a set frequency to a second coaxial cable at the lower end part of the 3# cross-connection box, detecting and recording the minimum amplitude phase of the coupling signal in the 4# grounding box, applying a signal with a set frequency to a third coaxial cable at the lower end part of the 3# cross-connection box, detecting and recording the minimum amplitude phase of the coupling signal in the 4# grounding box, and combining the obtained minimum amplitude phase of the three coupling signals into the 3# cross-connection box actual test characteristic.
Preferably, in step 2, the signal of the set frequency is an 8kHz signal.
Preferably, step 3 specifically includes:
substituting the actual test characteristics of the 2# cross interconnection boxes and the actual test characteristics of the 3# cross interconnection boxes into the cross interconnection box test characteristic table in the step 1, judging whether the actual test characteristics are matched with the cross interconnection box test characteristic table, if so, obtaining the cross interconnection form of the 2# cross interconnection boxes and the cross interconnection form of the 3# cross interconnection boxes, executing the step 4, and if not, executing the box opening and defect eliminating operation.
Preferably, if not matched in the step 3, executing the box opening and defect eliminating operation includes: if the standard test characteristics matched with the actual test characteristics of the 2# cross interconnection box do not exist in the cross interconnection box test characteristic table, the box opening and defect eliminating operation is carried out on the 2# cross interconnection box;
and if the standard test features matched with the actual test features of the 3# cross interconnection boxes do not exist in the cross interconnection box test feature table, executing the box opening and defect eliminating operation on the 3# cross interconnection boxes.
Preferably, step 4 specifically includes:
judging whether the 2# cross-connect box and the 3# cross-connect box complete a complete cross-connect section by combining the cross-connect form of the 2# cross-connect box and the cross-connect form of the 3# cross-connect box, if yes, checking; if not, opening any cross interconnection box, and adjusting the transposition order.
A second aspect of the present application provides an apparatus for a non-open box live-check cross-connect system, a method of implementing the non-open box live-check cross-connect system comprising: signal generating device, signal measuring device, storage device, input device and display device, characterized in that,
a signal generating device for generating a test signal of a set frequency and set amplitude;
a signal measurement device for measuring a response signal at the time of the test;
the storage device is used for storing the cross interconnection box standard test feature table and test data;
the input device is used for inputting a standard test characteristic table and test data of the fork interconnection box;
and the display device is used for displaying the test result and the operation prompt.
Compared with the prior art, the application has the beneficial effects that under the condition of not opening the cross interconnection box, whether the wiring in the 2# box and the 3# box is in a cross interconnection mode or not and whether the cross interconnection between the 2# box and the 3# box is matched with a correct cross interconnection section or not are judged in an electrified manner, and the cross interconnection box is opened only when the cross interconnection is in a cross interconnection error to adjust the transposition sequence. The operation and maintenance program is simplified, the time consumption is reduced, and the operation safety is improved.
Drawings
FIG. 1 is a schematic diagram of a cross-connect system for a method of non-open-box live-check cross-connect system of the present application;
FIG. 2 is a schematic diagram of a possible occurrence of a 3# cross interconnect;
FIG. 3 is a schematic diagram of the coupling signal at the first coaxial cable of the 3# cross-connect;
FIG. 4 is a schematic diagram of the coupling signal at the second coaxial cable of the 3# cross-connect;
fig. 5 is a schematic diagram of the coupling signal at the third coaxial cable of the 3# cross-connect.
FIG. 6 is a flow chart of a method of non-boxed live check cross-connect system of the present application.
Detailed Description
The application is further described below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and are not intended to limit the scope of the present application.
As shown in fig. 6, embodiment 1 of the present application provides a method of non-open box live check cross-connect system for a cable grounding system, as shown in fig. 1, comprising: sequentially adjacent 1# grounding boxes, 2# cross-connect boxes, 3# cross-connect boxes and 4# grounding boxes. In a preferred but non-limiting embodiment, the 1# grounding box and the 4# grounding box are direct grounding boxes. The method is used for judging whether wiring in the 2# cross-connected boxes and the 3# cross-connected boxes is in a cross-connected mode or not in a charged mode under the condition that the 2# cross-connected boxes and the 3# cross-connected boxes are not opened, and whether cross-connected matching between the 2# cross-connected boxes and the 3# cross-connected boxes is completed or not.
The method for checking the cross interconnection system without the unpacking power comprises the following steps:
step 1, establishing a standard test feature table of a cross interconnection box, which specifically comprises the following steps:
step 1.1, enumerating all cross-connect forms of the 3# cross-connect boxes, numbering each cross-connect form, as shown in fig. 2, comprising:
the coaxial cable inner core is connected with a 4# grounding box, the outer core is connected with a 2# cross-connecting box, the A phase of the 3# cross-connecting box is connected with the B phase, the B phase is connected with the C phase, and the C phase is connected with the a phase;
the coaxial cable inner core is connected with a 2# cross-connecting box, the outer core is connected with a 4# grounding box, an A phase of the 3# cross-connecting box is connected with a B phase, a B phase of the 3# cross-connecting box is connected with a C phase, and the C phase of the 3# cross-connecting box is connected with a phase;
the coaxial cable inner core is connected with a 4# grounding box, the outer core is connected with a 2# cross-connecting box, an A phase and a C phase of the 3# cross-connecting box are connected, a B phase and a phase are connected, and a C phase and a B phase are connected;
the serial number 04, the coaxial cable inner core is connected with a 2# cross-connecting box, the outer core is connected with a 4# grounding box, the A phase of the 3# cross-connecting box is connected with a C phase, the B phase is connected with a phase, and the C phase is connected with a B phase;
enumerating all cross-connect versions of the 2# cross-connect boxes, numbering each cross-connect version, comprising:
the coaxial cable inner core is connected with a 3# cross-connection box, the outer core is connected with a 1# grounding box, an A phase of the 2# cross-connection box is connected with a B phase, a B phase of the 2# cross-connection box is connected with a C phase, and the C phase of the 2# cross-connection box is connected with a phase;
the coaxial cable inner core is connected with a 1# grounding box, the outer core is connected with a 3# cross-connecting box, the A phase of the 2# cross-connecting box is connected with a B phase, the B phase is connected with a C phase, and the C phase is connected with a phase;
the serial number 07, the coaxial cable inner core is connected with a 3# cross-connecting box, the outer core is connected with a 1# grounding box, the A phase of the 2# cross-connecting box is connected with a C phase, the B phase is connected with a phase, and the C phase is connected with a B phase;
the coaxial cable inner core is connected with a 1# grounding box, the outer core is connected with a 3# cross-connecting box, an A phase and a C phase of the 2# cross-connecting box are connected, a B phase and a phase are connected, and a C phase and a B phase are connected;
step 1.2, compiling standard test characteristics for each cross-connect form of step 1.1, consisting of expected test results of each cross-connect form of the 2# cross-connect box and the 3# cross-connect box,
describing the scene number 01, when the 8kHz signal is coupled in the position of fig. 3, the signal 8kHz signal is collected at the 4# box, and the connection state of the inner core and the outer core of the scene number 01 can be seen: the A, C two phases at the 4# bin will detect a larger, opposite coupled signal, while the B phase coupled signal has the smallest amplitude.
When the 8kHz signal is coupled at the position of fig. 4, the 8kHz signal is collected at the 4# box, and the inner and outer core connection state of scene number 01 shows that: the A, B two phases at the 4# bin will detect a larger, opposite coupled signal, while the coupled signal amplitude is minimal at the C phase.
When the 8kHz signal is coupled at the position of fig. 5, the signal 8kHz signal is collected at the 4# box, and the inner and outer core connection state of scene number 01 shows that: the B, C two phases at the 4# bin will detect a larger, opposite coupled signal, while the a phase has the smallest coupled signal amplitude.
And so on, specifically tables 1 and 2 below,
table 1 3 minimum phase of amplitude of coupling signal detected at bin 4 when bin 4 is signaled
Table 22 phase with minimum amplitude of the coupling signal detected at bin # 1 when bin # is signaled
Step 2, under the condition of no box opening electrification, applying a signal with a set frequency to a first coaxial cable at the lower end part of the 2# cross-connection box, detecting and recording the minimum amplitude phase of a coupling signal at the 1# grounding box, applying a signal with a set frequency to a second coaxial cable at the lower end part of the 2# cross-connection box, detecting and recording the minimum amplitude phase of the coupling signal at the 1# grounding box, applying a signal with a set frequency to a third coaxial cable at the lower end part of the 2# cross-connection box, detecting and recording the minimum amplitude phase of the coupling signal at the 1# grounding box, combining the obtained three minimum amplitude phases of the coupling signals into the actual test characteristic of the 2# cross-connection box,
applying a signal with a set frequency to a first coaxial cable at the lower end part of the 3# cross-connection box, detecting and recording the minimum amplitude phase of the coupling signal in the 4# grounding box, applying a signal with a set frequency to a second coaxial cable at the lower end part of the 3# cross-connection box, detecting and recording the minimum amplitude phase of the coupling signal in the 4# grounding box, applying a signal with a set frequency to a third coaxial cable at the lower end part of the 3# cross-connection box, detecting and recording the minimum amplitude phase of the coupling signal in the 4# grounding box, combining the obtained three minimum amplitude phases of the coupling signal into the actual test characteristic of the 3# cross-connection box,
and 3, substituting the actual test characteristics of the 2# cross interconnection boxes and the actual test characteristics of the 3# cross interconnection boxes into the cross interconnection box test characteristic table in the step 1, judging whether the actual test characteristics are matched with the cross interconnection box test characteristic table, if so, obtaining the cross interconnection form of the 2# cross interconnection boxes and the cross interconnection form of the 3# cross interconnection boxes, executing the step 4, and if not, executing the box opening defect eliminating operation. The method specifically comprises the following steps:
and if the standard test features matched with the actual test features of the 2# cross interconnection box do not exist in the cross interconnection box test feature table, the box opening and defect eliminating operation is carried out on the 2# cross interconnection box. Similarly, if the standard test features matched with the actual test features of the 3# cross-connect box do not exist in the cross-connect box test feature table, the box opening and defect eliminating operation is performed on the 3# cross-connect box.
Step 4, judging whether the 2# cross-connect box and the 3# cross-connect box complete a complete cross-connect section or not by combining the cross-connect form of the 2# cross-connect box and the cross-connect form of the 3# cross-connect box, if yes, checking to pass; if not, opening any cross interconnection box, and adjusting the transposition order.
It is noted that the above test method, scenario number 01 and scenario number 04 test results, scenario number 02 and scenario number 03 test results, scenario number 05 and scenario number 08 test results, and scenario number 06 and scenario number 07 test results, indicate that the above non-open box test method cannot distinguish between scenario number 01 and scenario number 04, and scenario number 02 and scenario number 03, between scenario number 05 and scenario number 08, and scenario number 06 and scenario number 07, but nevertheless, the test method can correctly determine the correctness of the entire cross-connect segment,
the method specifically comprises the following steps:
1) When the 3# cross-connection box couples signals, the 4# grounding box detects a sequence BCA of the phase with the minimum signal amplitude, and the sequence corresponds to a scene 1 and a scene 4; when the 2# cross-connection box is used for coupling signals, and the 1# grounding box is used for detecting the sequence CAB of the phase with the minimum signal amplitude, the sequence CAB corresponds to the scene 5 and the scene 8; at this time, the two are combined, and 4 cases may occur, but all the 4 cases complete a complete cross-connection section.
2) When the 3# cross-connection box is used for coupling signals, and the 4# grounding box is used for detecting the sequence CAB of the phase with the minimum signal amplitude, the sequence CAB corresponds to the scene 2 and the scene 3; when the 2# cross-connect box couples signals, and the 1# grounding box detects the sequence BCA with the minimum signal amplitude, the sequence corresponds to the scene 6 and the scene 7; at this time, the two are combined, and 4 cases may occur, but all the 4 cases complete a complete cross-connection section.
3) When the 3# cross-connection box couples signals, the 4# grounding box detects a sequence BCA of the phase with the minimum signal amplitude, and the sequence corresponds to a scene 1 and a scene 4; when the 2# cross-connect box couples signals, and the 1# grounding box detects the sequence BCA with the minimum signal amplitude, the sequence corresponds to the scene 6 and the scene 7; at this time, the two-by-two combination is possible to generate 4 cases, but the 4 cases generate the error of the cross interconnection transposition, and any cross interconnection box is required to be opened, and the transposition order is required to be adjusted.
4) When the 3# cross-connection box is used for coupling signals, and the 4# grounding box is used for detecting the sequence CAB of the phase with the minimum signal amplitude, the sequence CAB corresponds to the scene 2 and the scene 3; when the 2# cross-connection box is used for coupling signals, and the 1# grounding box is used for detecting the sequence CAB of the phase with the minimum signal amplitude, the sequence CAB corresponds to the scene 5 and the scene 8; at this time, the two-by-two combination is possible to generate 4 cases, but the 4 cases generate the error of the cross interconnection transposition, and any cross interconnection box is required to be opened, and the transposition order is required to be adjusted.
Embodiment 2 of the present application provides an apparatus for a non-open box live-check cross-connect system, the method for operating the non-open box live-check cross-connect system of embodiment 1, comprising: signal generating device, signal measuring device, storage device, input device and display device, characterized in that,
a signal generating device for generating a test signal of a set frequency and set amplitude;
a signal measurement device for measuring a response signal at the time of the test;
the storage device is used for storing the cross interconnection box standard test feature table and test data;
the input device is used for inputting a standard test characteristic table and test data of the fork interconnection box;
and the display device is used for displaying the test result and the operation prompt.
Compared with the prior art, the application has the beneficial effects that under the condition of not opening the cross interconnection box, whether the wiring in the 2# box and the 3# box is in a cross interconnection mode or not and whether the cross interconnection between the 2# box and the 3# box is matched with a correct cross interconnection section or not are judged in an electrified manner, and the cross interconnection box is opened only when the cross interconnection is in a cross interconnection error to adjust the transposition sequence. The operation and maintenance program is simplified, the time consumption is reduced, and the operation safety is improved.
While the applicant has described and illustrated the embodiments of the present application in detail with reference to the drawings, it should be understood by those skilled in the art that the above embodiments are only preferred embodiments of the present application, and the detailed description is only for the purpose of helping the reader to better understand the spirit of the present application, and not to limit the scope of the present application, but any improvements or modifications based on the spirit of the present application should fall within the scope of the present application.
Claims (6)
1. A method of non-unpacking live-check cross-connect systems, comprising the steps of:
step 1, establishing a standard test characteristic table of a cross interconnection box, which comprises the following steps: cross-connect form and standard test features thereof; comprising the following steps:
step 1.1, enumerating all cross-connect forms of the 3# cross-connect boxes, numbering each cross-connect form, comprising: the coaxial cable inner core is connected with a 4# grounding box, the outer core is connected with a 2# cross-connecting box, the A phase of the 3# cross-connecting box is connected with the B phase, the B phase is connected with the C phase, and the C phase is connected with the a phase; the coaxial cable inner core is connected with a 2# cross-connecting box, the outer core is connected with a 4# grounding box, an A phase of the 3# cross-connecting box is connected with a B phase, a B phase of the 3# cross-connecting box is connected with a C phase, and the C phase of the 3# cross-connecting box is connected with a phase; the coaxial cable inner core is connected with a 4# grounding box, the outer core is connected with a 2# cross-connecting box, an A phase and a C phase of the 3# cross-connecting box are connected, a B phase and a phase are connected, and a C phase and a B phase are connected; the serial number 04, the coaxial cable inner core is connected with a 2# cross-connecting box, the outer core is connected with a 4# grounding box, the A phase of the 3# cross-connecting box is connected with a C phase, the B phase is connected with a phase, and the C phase is connected with a B phase; and
enumerating all cross-connect versions of the 2# cross-connect boxes, numbering each cross-connect version, comprising: the coaxial cable inner core is connected with a 3# cross-connection box, the outer core is connected with a 1# grounding box, an A phase of the 2# cross-connection box is connected with a B phase, a B phase of the 2# cross-connection box is connected with a C phase, and the C phase of the 2# cross-connection box is connected with a phase; the coaxial cable inner core is connected with a 1# grounding box, the outer core is connected with a 3# cross-connecting box, the A phase of the 2# cross-connecting box is connected with a B phase, the B phase is connected with a C phase, and the C phase is connected with a phase; the serial number 07, the coaxial cable inner core is connected with a 3# cross-connecting box, the outer core is connected with a 1# grounding box, the A phase of the 2# cross-connecting box is connected with a C phase, the B phase is connected with a phase, and the C phase is connected with a B phase; the coaxial cable inner core is connected with a 1# grounding box, the outer core is connected with a 3# cross-connecting box, an A phase and a C phase of the 2# cross-connecting box are connected, a B phase and a phase are connected, and a C phase and a B phase are connected;
step 1.2, compiling standard test characteristics aiming at each cross interconnection form of step 1.1, wherein the standard test characteristics are formed by expected test results of each cross interconnection form of a 2# cross interconnection box and a 3# cross interconnection box to form a cross interconnection box standard test characteristic table; as represented by the following table,
step 2, under the condition of no box opening and electrification, applying a signal with a set frequency to a set cross interconnection box, detecting and recording the minimum phase of the coupling signal amplitude at a corresponding grounding box; comprising the following steps:
under the condition that the box is not electrified, applying a signal with a set frequency to a first coaxial cable at the lower end part of the 2# cross-connection box, detecting and recording the minimum amplitude phase of a coupling signal at the 1# grounding box, applying a signal with a set frequency to a second coaxial cable at the lower end part of the 2# cross-connection box, detecting and recording the minimum amplitude phase of the coupling signal at the 1# grounding box, applying a signal with a set frequency to a third coaxial cable at the lower end part of the 2# cross-connection box, detecting and recording the minimum amplitude phase of the coupling signal at the 1# grounding box, and combining the obtained three minimum amplitude phase of the coupling signal into the actual test characteristic of the 2# cross-connection box; and
applying a signal with a set frequency to a first coaxial cable at the lower end part of the 3# cross-connection box, detecting and recording the minimum amplitude phase of the coupling signal at the 4# grounding box, applying a signal with a set frequency to a second coaxial cable at the lower end part of the 3# cross-connection box, detecting and recording the minimum amplitude phase of the coupling signal at the 4# grounding box, applying a signal with a set frequency to a third coaxial cable at the lower end part of the 3# cross-connection box, detecting and recording the minimum amplitude phase of the coupling signal at the 4# grounding box, and combining the obtained minimum amplitude phase of the three coupling signals into the actual test characteristic of the 3# cross-connection box;
step 3, substituting the actual test features of the step 2 into the cross-connection box test feature table in the step 1, judging whether the actual test features are matched with the cross-connection box test feature table, if so, obtaining a cross-connection form, executing the step 4, and if not, executing the box opening and defect eliminating operation;
step 4, judging whether a complete cross interconnection section is completed, if yes, checking to pass; if not, opening any cross interconnection box, and adjusting the transposition order.
2. A method of non-unpacking a live-check cross-connect system as in claim 1 wherein:
in step 2, the signal of the set frequency is an 8kHz signal.
3. A method of non-cartoning charged-check cross-connect system as claimed in claim 1 or claim 2, wherein:
the step 3 specifically comprises the following steps:
substituting the actual test characteristics of the 2# cross interconnection boxes and the actual test characteristics of the 3# cross interconnection boxes into the cross interconnection box test characteristic table in the step 1, judging whether the actual test characteristics are matched with the cross interconnection box test characteristic table, if so, obtaining the cross interconnection form of the 2# cross interconnection boxes and the cross interconnection form of the 3# cross interconnection boxes, executing the step 4, and if not, executing the box opening and defect eliminating operation.
4. A method of non-unpacking a live-check cross-connect system as in claim 3 wherein:
if not, the step 3 of executing the box opening and defect eliminating operation comprises the following steps: if the standard test characteristics matched with the actual test characteristics of the 2# cross interconnection box do not exist in the cross interconnection box test characteristic table, the box opening and defect eliminating operation is carried out on the 2# cross interconnection box;
and if the standard test features matched with the actual test features of the 3# cross interconnection boxes do not exist in the cross interconnection box test feature table, executing the box opening and defect eliminating operation on the 3# cross interconnection boxes.
5. A method of non-unpacking a live-check cross-connect system in accordance with claim 4, wherein:
the step 4 specifically comprises the following steps:
judging whether the 2# cross-connect box and the 3# cross-connect box complete a complete cross-connect section by combining the cross-connect form of the 2# cross-connect box and the cross-connect form of the 3# cross-connect box, if yes, checking; if not, opening any cross interconnection box, and adjusting the transposition order.
6. An apparatus for a non-open box live-check cross-connect system, implementing the method of a non-open box live-check cross-connect system of any of claims 1 to 5, comprising: signal generating device, signal measuring device, storage device, input device and display device, characterized in that,
a signal generating device for generating a test signal of a set frequency and set amplitude;
a signal measurement device for measuring a response signal at the time of the test;
the storage device is used for storing the cross interconnection box standard test feature table and test data;
the input device is used for inputting a standard test characteristic table and test data of the fork interconnection box;
and the display device is used for displaying the test result and the operation prompt.
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