SU1417024A1 - Simulator for training in location of cable link faults - Google Patents

Abstract

The invention relates to simulators for teaching methods for determining the nature and location of damage to cable connections and can be used both for educational purposes and for an objective assessment of the qualifications of specialists. The purpose of the invention is to expand the didactic capabilities of the simulator by providing the opportunity to train in determining the place of entanglement of the cable cores. The essence is that the introduction of the node 17 for switching the damage signals, the first and second nodes 18 and 19 for switching the distance signals, the first and second nodes 20 and 21 for simulating the distance made it possible to imitate the cable entanglement , increasing the effectiveness of training. The simulator also contains nodes 6–8 for simulating the parameters of cable cores, nodes 9 for simulating changes in parameters between communication lines, nodes 10 for simulating changes in parameters for communication lines, simulators 11 for remoteness of cable breaks, switches for remote location signals and types of cable breaks, switches 13 signals of cable core breakage, block 14 for regulating the capacitive asymmetry of the cable line, fault simulation blocks 15, limiting elements 16. 12 Il. i O)

Description

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The invention relates to training; frames for teaching methods of determination; nature and location of damage to cable connections and can be used

both for educational purposes and for the objective assessment of the qualifications of specialists.

The aim of the invention is to expand the didactic capabilities of the simulator by providing the opportunity to train in determining the place of entanglement of the cable conductor.

Figure 1 presents the functional diagram of the simulator; FIG. - a diagram of the first and third parameter imitation nodes and the third core on side A; FIG. 3 is a diagram of the node simulating the parameters of the cable cores on the side A; on 4; mg.4 - diagram of the node simulating the parameters of the cable cores on the B side FIG. 3 is a functional diagram of a node for simulating the change of parameters between communication lines; Fig. 6 is a functional diagram of a node simulating a change in communication link parameters; Fig. 7 is a diagram of a unit for adjusting the capacitive asymmetry of a cable line; Fig.8 is a block diagram of the simulation of faults; Fig. 9 is a diagram of a damage switching node; Fig. 10 is a diagram of the first and second distance signal switching nodes; Fig. 11 is a diagram of a first distance simulation node; Fig. 2 is a diagram of a second distance simulation node.

The simulator contains measuring outputs 1-4 and power input 5 simulating ground, nodes 6-8 for simulating the parameters of cable cores, nodes 9 for simulating changes in parameters between the centers of communication lines, nodes 10 for simulating changes of parameters for communication lines j, simulators 11 remoteness of the cable break site; commander; 12 remote location signals and the type of cable break; switch 13, cable break, cable capacitance asymmetry unit 14, fault simulation block 15, limiting elements 16, damage signal switching node 17, nodes 18 and 19 to 1 1utatsii distance signals, components 20 and 21 simulate distance.

Nodes 6-8 (FIGS. 2-4, respectively) contain a variable resistance 22 for isolating ohmic asymmetry of the cable cores. Element 16 and inductance 23 imitate resistance (loop)

lived and the inductance of the cable, respectively.

Nodes 9 (FIG. 3) contain series-connected magazine 24 containers, variable resistance 23, and a circuit containing two parallel branches with a resistance magazine 26 in one and with a series connection of resistance magazine 27 and a variable capacitance 28 in the other. Store 24 is used to work out the task of adjusting the coupling coefficient, but only after eliminating

5 capacitive asymmetry.

Nodes 10 (FIG. 6) are a series connection of a tank magazine 29 and a circuit containing two parallel branches with a resistance magazine 30 in one and with a series connection of a resistance magazine 31 and a tank 32 in the other ...

Simulators 1I are

5 adjustable delay lines, with the required delay time being set using switches.

Switches 12 are

0 a four position switch (the fourth position terminal is not connected anywhere). Switch 13 is a two position switch. Scheme block 14 is presented on

with FIG. 7. It contains four tank stores and a switch, for example, a set of multi-section switches, with which additional tanks from the tank stores are connected between the corresponding core and input 3, simulating the ground.

Block 13 (Fig. 8) contains a switch of the type of faults, a node for imitation of heterogeneity, a node for imitation

5 short circuits between the cores, a node simulating a short circuit between the core and the ground.

Node 17 contains a paired triple switch with the corresponding switching it klemchm (Fig.9).

Nodes 18 and 19 are the same and contain a switch (figure 10).

The node 20 contains a magazine of capacitors, in which the same terminals are connected and are the output of the node (Fig. 11). A similar device has a node 21. The difference lies in the size of the capacitances of the capacitors and their number (Fig. 12).

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the invention is

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in that with the help of the node 17, the entanglement of the cable cores is simulated, with the help of the nodes 18 and 19, by selecting the appropriate values of the capacities of the nodes 20 and 21, the distance to the place of the entanglement of the wires is simulated. This allows training to search for distances to the locations of the cable cable, which increases the effectiveness of training by expanding the training capabilities of the simulator.

The simulator works as follows.

The head using switches 12 and 13, switches of blocks 15, simulators 11, node 17 and nodes 18 and 19 exposes the malfunctions necessary for training and makes all control measurements to determine the nature and distance to the injury site. At the same time various devices are used.

During training, working out standards or Gntrol for forging to determine the nature and places of cable damage, the head with the help of switches exposes one damage. In this case, using the resistance 22, the ohmic asymmetry of the cable line is simulated, the capacitance asymmetry and the distance to it are simulated with the help of block 14, using the switches 12 and 13 and the simulators 11, the cable and the distances to it are simulated using a switch 12 and The blocks 15 simulate short circuits between the cores, between the core and the ground, as well as the cable heterogeneity and distance with it. Measuring instruments are connected to measurement outputs 1-4 and input 5, simulating earth. The measurement method is selected based on the nature of the damage and the availability of appropriate measuring instruments.

The entanglement of the cable cores is simulated using node 17, and the distance to the cable core entangling point is simulated by connecting the corresponding capacitors from nodes 20 and 21 with nodes 18 and 19. In this case, the measuring device is connected to measuring outputs 1–4.

The nature of cable malfunction (core entanglement) is determined by the continuity of the cable. Distance to month

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This entanglement is determined by two capacitance measurements and a formula.

Thus, the efficiency of training is increased due to the additional opportunity to train in determining the place of entanglement of cable cores, work out standards, control knowledge and skills in searching for places of damage to cable lines.

Claims (1)

Formula isotopic A simulator for training cable connection damage detection methods, containing the first, second, third, fourth, five, sixth, seventh and eighth nodes of the cable parameters imitation, the first conclusions of which are fftix are the corresponding measuring outputs of the simulator between the communication lines, the first and second terminals of which are connected to the second terminals of the first and the third nodes imitation parameters of the cable cores, respectively, the second node of the simulation of changes in parameters between the communication lines, the first and the second pins of which are connected to the second pins of the second and fourth nodes of the parameter simulation of the cable cores, respectively, the third node of the simulation of changing parameters between the communication lines, the first and second terminals of which are connected to the second terminals of the fifth and sixth parameters of the cable core simulation, fourth a parameter change simulation node between the communication lines, the first and second signals of which are connected to the second terminals of the seventh and eighth cable parameters simulation nodes, respectively, the first and second Evils of imitation of changing the parameters of communication lines, the first outputs of which are connected to the third conclusions of the first and fifth nodes of the cable parameters imitation and the first output of the asymmetry capacitance control unit of the cable line, the third and fourth nodes of the simulation of changing the parameters of communication lines, the first conclusions of which are connected to third pins of the second and sixth nodes of the cable parameters imitation, with the second output of the capacitance control unit of the cable line asymmetry, the fifth and sixth pairs of the imitation of the pair 5U KserpoB LIE1SHY communication, the first conclusions of which are connected to the third conclusions of the third and seventh simulation nodes: cable live parameters to the third: output of the capacitance control unit i of the cable line asymmetry, the seventh and eighth simulation nodes of the change of communication line parameters, the first terminals of which are connected to the third pins of the fourth and eighth nodes imitation parameters of the cable and the fourth output of the control unit capacitances of the cable line asymmetry, first, second, third and fourth simulators of the cable breakage location The first pins of which are connected to the first pins of the corresponding switches of the remote location signals and the type of cable break, and the second pins to the first terminals of the corresponding switches of the cable break wires, the second terminals of which are connected to the fourth pins of the corresponding cable simulating nodes, fifth, the sixth, seventh and eighth imitators of remoteness of the cable breakage site whose first terminals are connected to the second terminals of the first, second, third and fourth switches, respectively signals of location and type of cable break, the third outputs of which are connected to the first terminals of the first, second, third and fourth failure simulation blocks, the second and third outputs of which are connected to 2D6 The first terminals of the respective restrictive elements, the second terminals of which are connected to the third terminals of the respective commutators. Signal cable breakage, the first terminals of the first and second restrictive elements are connected to the fourth terminals of the fifth and eighth parameters of the cable cores simulation, the second terminals of the simulation nodes. changes in communication line parameters, the fifth output of the capacitive asymmetry control unit of the cable line and the fourth outputs of the fault simulation blocks are connected to the input m power simulator, characterized in that, in order to expand the didactic capabilities of the simulator, the damage signal switching node, the first, second, third inputs, the first and second outputs of which are connected to the first terminals of the first, second and third limiting elements and to the fourth pins of the sixth and seventh nodes simulating the parameters of the cable cores, the first and second distance signal switching nodes, the inputs of which are connected to the third output of the damage signal switching node, and the first and Second, distance simulation nodes, the outputs of which are connected to the fourth terminals of the sixth and eighth nodes imitations of the cable core parameters, respectively, and inputs to the outputs of the first and second distance signal switching nodes, respectively. / J srigL cpuff.S (ffu9.6 FIR.T srig.9 Srig.11 I i i Srig.GO cpue.ff