SU1107149A1 - Training system for teaching skills needed for operation with polyphase electricity supply networks - Google Patents

Abstract

1. SIMULATOR FOR TEACHING WORK SKILLS WITH MULTI-PHASE ELECTRICAL NETWORKS, containing a power supply and signaling unit connected to a transformer unit, a rectifier whose output is connected to one of the inputs of an inductive load unit, and a measuring unit that is different in order to improve the training efficiency It has an inductance simulation unit and a switch, while the outputs of the transformer unit are connected directly and through the inductance simulation unit to the inputs of the switch, the first output of which is connected to the second in the course of the inductive load unit, the other outputs — with the rectifier inputs, and the measuring output — with the input of the measuring unit. i 2. The simulator according to claim 1, which is based on the fact that it has a switch block, some of the terminals of which are connected to the inputs of an inductive simulation block C, connected by its outputs to other terminals of the switch block.

Description

1 The invention relates to a simulator for training in multiphase electrical network skills. A simulator for learning to work with multiphase power grids is known, comprising a power and signaling unit connected to a transformer unit, a rectifier whose output is connected to one of the inputs of an inductive load unit, and a measuring unit Cl. A disadvantage of the known simulator is the low efficiency of learning. The purpose of the invention is to increase the effectiveness of training. The goal is achieved by the fact that a simulator for teaching multiphase electrical grids, containing a power supply and signaling unit connected to a transformer unit, a rectifier whose output is connected to one of the inputs of an inductive load unit, and a measuring unit, has an inductance simulation unit and a switch, while the outputs of the transformer block are directly and via an inductance simulation block connected to the switch inputs, the first output of which is connected to the second input of the inductive load block, etc. The other outputs are with the rectifier inputs, and the measuring output is with the input of the measuring unit. In addition, the simulator has a switch block, some of the terminals of which are connected to the inputs of an inductance simulation unit connected by its outputs to other conclusions of the switch block. FIG. 1 shows a structural diagram of the simulator; in fig. 2 - circuit diagram in principle. The simulator for working with multiphase power grids contains a power supply unit 1 and an alarm unit 2 transformers with inputs 3–6 and outputs 7–10, a unit 11 with inductance training with outputs 13–15, a switch unit 16, a switch 17 with outputs 18 - 21, a rectifier 22 with an output 23, an inductive load unit 24, a measuring unit 92 25, a measuring output 26 of the switch and a terminal 27 of the switch block. Work with the simulator is carried out as follows. A power cable is connected to the input connector of the simulator. The network is connected. In this case, the alarm lamps of the unit 1. light up and signal the presence of voltage. By connecting the appropriate replacement chip of the switch 17, select the desired circuit of the investigated rectifier in block 22, for example, a three-phase rectifying circuit with an output of the zero point of the transformer. The switches of the block 16 are opened and thus the throttles 12 (Dr1, Dr2 and DRZ) of the simulator 11 of the transformer inductances are included in the phases. The inductive load unit 24 is disconnected from the output of the rectifier 22. The current in the circuit does not leak and the measuring instruments of the unit 25 record the values of currents and voltages in idle mode. After that, an inductive load unit 24 is connected and a load switch is changed by an appropriate switch and the load characteristic of the rectifier 22 is removed, taking into account the current switching processes in the phases that affect the average value of the rectified voltage. Similarly, the load characteristic is removed without taking into account switching processes, while the corresponding toggle switches of block 16 are turned on, they shunt the chokes in block 11 of the transformer inductance simulation. Using the readings of the measuring instruments under the indicated operating conditions of the rectifier 22, a comparative analysis is performed and the ratios of currents and voltages in the character of the | first points of the circuit are determined. Using an electronic oscilloscope, look at the diagrams of voltages and currents in the characteristic points of the circuit, plugging it into the corresponding sockets. The use of this simulator allows you to increase the effectiveness of training.

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Claims (2)

1. SIMULATOR FOR TRAINING SKILLS WITH MULTI-PHASE ELECTRICAL NETWORKS, comprising a power and signaling unit connected to a transformer unit, a rectifier, the output of which is connected to one of the inputs of the inductive load unit, and a measuring unit, characterized in that, in order to increase the learning efficiency , it has an inductance simulation block and a switch, while the outputs of the transformer block are directly and through the inductance simulation block connected to the inputs of the switch, the first output of which is connected to the second input inductive load, other outputs with rectifier inputs, and the measuring output with the input of the measuring unit. 2. The simulator according to p. ^ Characterized in that it has a block of switches, one of the outputs of which is connected to the inputs of the inductance simulation unit, connected by its outputs to other outputs of the switch block.