RU2624610C1 - Supply mains simulator (sms) - Google Patents

Abstract

FIELD: electricity.

SUBSTANCE: simulator contains at least one programmable DC power source, at least one programmable AC power source, an impulse noise generator, a switching unit, at least one measuring unit, a control unit, a local area network (LAN), a network switch, a data processing server, an insulation monitoring device, remote controls, at least one data acquisition controller, a precise time server connected to a GPS/GLONASS antenna. DC and AC power sources are made suitable for converting incoming electric power to their inputs into output currents with predefined parameters. The outputs of the current sources and the impulse noise generator are connected to the inputs of the switching unit, the outputs of which are configured to communicate with the corresponding inputs of at least one device under test and with at least one measuring unit. The control unit is made in form of an operator's computer work station (CNC), operator's CNC, a data processing server, a remote control, a data acquisition controller, a precise time server, inputs of current sources and an impulse noise generator are connected via LAN through a network switch. The insulation monitoring device is connected to at least one data acquisition controller and is configured to measure the insulation resistance of the simulator circuits. At least one measuring unit is configured to measure the signal characteristics at the output of the switching unit and is connected to a data acquisition controller. A remote control and the operator's CNC are additional configured to transmit information over the loudspeaker network.

EFFECT: providing the possibility of carrying out a comprehensive check of various types of equipment on one stand, the possibility of conducting of parallel tests, increasing the flexibility and efficiency of changing the operating modes of the equipment during testing, the ability to provide a minimum delay in the conversion of electricity from the time of the transfer of the relevant command, and also to provide the visualization of measurements and results of tests in real time, a significant quantity reduction of equipment failures in operation due to the identification at the stage of factory testing of equipment containing unstable power supply elements.

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Description

Technical field

The present invention relates to the field of electrical testing, and more specifically to testing equipment when simulating deviations of the parameters of the quality of electricity.

State of the art

At the moment, test systems are widely represented in the prior art that make it possible to test equipment for susceptibility to voltage surges and interference arising from power supply networks.

So, a simulator of network voltage dips (RU 2028642 C1, 02/09/1995) is known, which allows testing on-board radio navigation equipment.

The disadvantages of this simulator are narrow functional purpose without the possibility of its expansion for use with another type of equipment, as well as low information content of the results of the tests.

Also known is a complex for simulating instability of DC voltage (RU 2277713 C1, 06/10/2006), designed for testing aircraft electronic equipment.

The specified complex has the same drawback in the form of insufficient functionality, since it is not intended for testing equipment designed for use in AC networks.

As the closest analogue of the present invention, a simulator of the power supply network (journal "Modern Electronics", 2010, No. 4, p. 52-53) was selected, comprising: a direct current source, an alternating current source, an impulse noise generator, a switching unit, a measuring unit , Control block. In the decision taken as a prototype, sources of direct and alternating current are programmable converters of electricity supplied to their inputs. The output signals of these sources, as well as the output signal of the impulse noise generator, are fed to the input of the switching unit. On command from the control unit, the required signal is fed to the input of the equipment under test, while the measuring unit is configured to measure the characteristics of the signals received from the output of the switching unit.

The disadvantages of the closest analogue include the lack of the ability to conduct a comprehensive check of various types of equipment on one stand, the lack of the ability to conduct parallel tests, the lack of flexibility and speed of changing the operating modes of the equipment during testing.

The objective of the present invention is both to overcome these drawbacks of the prior art, and to ensure the implementation of additional technical results, the possibility of which will be obvious to a specialist when reading the following sections of the invention.

Disclosure of invention

To achieve the above, as well as other technical results disclosed below, a power supply network simulator (IPES) is proposed, comprising: at least one programmable direct current source, at least one programmable alternating current source, an impulse noise generator, a switching unit, at least at least one measuring unit, control unit, while the indicated sources of direct and alternating current are configured to convert the energy supplied to their inputs into output currents with predetermined parameters, while the outputs of the indicated current sources and the impulse noise generator are connected to the inputs of the switching unit, the outputs of which are configured to communicate with the corresponding inputs of at least one device under test and at least one measuring unit, characterized in that it additionally includes: a local area network (LAN), a network switch, a data processing server, an isolation control device, remote controls (at least one remote control) in the data collection controller, the exact time server associated with the GPS / GLONASS antenna, while the control unit is made in the form of an automated workstation (AWP) of the operator, and the operator's workstation, data processing server, remote control, data acquisition controller, exact time server, inputs the indicated current sources and the impulse noise generator are connected via a LAN via a network switch, the insulation monitoring device is connected to at least one data acquisition controller and is configured to measure the insulation resistance of the circuits by them at least one measuring unit is configured to measure the characteristics of the signal at the output of the switching unit and is connected to a data acquisition controller, and the operator’s remote control and operator workstation are additionally configured to transmit information over the speakerphone network.

The above distinguishing features of the proposed invention are aimed at achieving technical results consisting in the possibility of conducting a comprehensive check of various types of equipment at one stand, the possibility of conducting parallel tests, increasing the flexibility and efficiency of changing the operating modes of equipment during testing. In addition, the proposed invention allows to ensure a minimum delay in the conversion of electricity from the moment of transmission of the corresponding command, as well as to provide visualization of measurements and test results in real time. The result also provides a significant reduction in the number of equipment failures during operation due to the identification at the stage of factory testing of equipment containing unstable power components.

A more detailed explanation of the essence of the proposed invention and the rationale for achieving these technical results is given in the following section of the description.

The implementation of the invention

In a preferred embodiment, IPES is a hardware-software complex for testing and can be used as a test bench for equipment and / or power supply at enterprises, providing culling and deep factory tests of equipment, the repair of which during operation is difficult or involves considerable expenses.

IPES in its composition contains several basic functional subsystems.

The power subsystem includes series-connected and / or parallel-connected power converters and a surge generator. These devices are made with the possibility of programming their functioning. In particular, programming can be carried out by means of commands sent from the operator's workstation and / or the remote control via a local network, a network switch, and a data acquisition controller to the corresponding inputs of the indicated devices. In an advantageous embodiment, the network switch is an Ethernet switch.

The switching subsystem (block) includes switching devices (circuit breakers, contactors, relays) that ensure the connection of IPES devices to each other and change the electrical circuit of the IPES if necessary (turning on and off equipment and equipment blocks).

The communication subsystem provides for the interaction of the IPES functional subsystems via digital data transmission channels, including the transmission of electric parameter values from the monitoring (measurement) subsystem of electric power conversion parameters and commands for performing electric power conversion.

The data processing subsystem includes a data processing server responsible for receiving, converting and transmitting data between the remaining subsystems.

The I / O subsystem includes a controller (data collection), which performs the tasks of collecting data from IPES devices and transmitting control commands to remotely controlled devices (for example, such as programmable direct current sources, programmable alternating current sources, impulse noise generators).

The monitoring (measurement) subsystem performs the task of measuring electrical parameters in IPES.

The user interface subsystem provides a human-machine interface to the IPES user (s) for displaying measured values and issuing commands to switching devices and power converters.

The equipment is preferably housed in floor and wall cabinets. Power, measuring, switching equipment is located in floor cabinets equipped with a ventilation system. Telecommunications, data collection and processing equipment, and time-sensitive equipment are located in a wall cabinet. Remote controls are complete products and are based on wall mounted cabinets. Each remote control has a speakerphone station for user conversations during parallel tests.

Cable connections between cabinets are made in boxes and trays. Cable connections inside the cabinets are made using terminal connections.

It should be noted that the above options for the placement of equipment are for illustrative purposes only and do not serve to limit the scope of protection of the proposed invention.

For a specialist it will be obvious that these tools and interfaces can be made for interaction in accordance with methods known from the prior art. For example, remote controls and operator workstations can be made to operate in accordance with wireless communication standards, and in this case they can be mobile devices. Or, the functionality of the proposed remote control and workstation can be performed at the software level and can be provided when such a program is run on known hardware.

IPES operates according to the feedback principle: by a command entered by the user, IPES equipment generates electricity at the output connections with user-specified parameters.

Using the touch panel (equipped with a graphical interface) on the remote control, the user selects one of the electric power conversion modes, sets the conversion parameters and issues a command to start electric power conversion. These actions can also be performed using analog manipulators (for example, buttons or a joystick type) located on the remote control.

The set parameters and the command over the local area network in digital format are transmitted to the data processing server. The data processing server processes the received information and transmits the command and conversion parameters to the electric power converter in a digital format supported by the converter via a local area network. The electric power converter, having received the command and parameters, performs the electric power conversion of the supply network to which it is connected, and transfers the converted electric power to the output connections.

Electric power conversion is performed with high accuracy (up to 0.1 V) with minimal delay (from the moment the user issued the command), limited data transfer speed via digital communication channels (for example, up to 100 Mbit / s).

During the testing of the user command by the electric power converter, the current and voltage are measured at the output connections. The measured values for low-current electrical connections are transmitted in analog format to the controller, which converts the received data into digital format and transmits them over the local network to the remote control or operator workstation.

Using the touch panel (screen) on the remote control or operator’s workstation, the received data is visualized in real time in the form of graphs (trends) of measurements and numerical values.

If necessary, the user can execute a command to remotely turn on / off the switching devices at the power connection, as well as turn on / off the power of the IPES.

Remote control is performed using the touch panel of the remote control and / or analog manipulators located on the remote control. The command entered by the user with the remote control in digital form is transmitted to the controller (data acquisition).

The controller converts the command into analog format and transmits it via low-current electrical connections to the appropriate switching device (unit).

The switching device, having received the command, performs the switching. The current position of the switching device (on / off) is cyclically read by the controller for low-current electrical connections. The read value is converted by the controller into digital format and transmitted to the remote control for visualization on the touch panel.

An additional function of IPES is the ability to measure the insulation resistance of the circuits of IPES itself. This function allows you to increase the operational safety of the complex due to timely signaling about possible current leaks to the IPEC equipment cases.

As a result of the work of the proposed invention, the implementation of the following technical capabilities is provided:

1. Conversion of electric power of the 380 V AC mains into electric power of direct or alternating current in accordance with the specified characteristics, including:

a) dynamic variable voltage change in real time in the range from 0 to 500 V (direct current) to 520 V (alternating current);

b) instantaneous voltage dips from the current level to 0;

c) the generation of surge overvoltages up to 1000 V relative to the current voltage level lasting from 1 μs;

d) dynamic variable frequency change in real time in the range from 40 to 450 Hz (alternating current).

2. Dynamic (in real time) change of transformation parameters.

3. Conversion of electricity in accordance with pre-formed profiles.

4. The ability to simultaneously conduct multiple sessions of electric power conversion without impairing output characteristics.

5. Providing, for connected consumers, the main and backup input with synchronously or selectively variable parameters.

6. Monitoring the parameters of the electric power of the mains and output connections.

7. Remote control of output connections and remote setting of electric power conversion parameters.

8. Event logging, event logging.

9. Measurement of insulation resistance in electrical circuits and alarm about violations.

For a better understanding of the essence of the proposed invention in the application materials is shown in FIG. 1, which shows the general scheme of IPES.

At the reference numerals of FIG. 1 are presented:

1 - power converters (programmable direct current sources and / or programmable alternating current sources).

2 - pulse generator.

3 - controller.

4 - insulation monitoring device.

5 - server.

6 - remote control.

7 - operator workstation.

8 - Ethernet switch.

9, 9.1 - speakerphone system.

10 - an exact time server with an antenna.

In FIG. 1 also shows the corresponding connections between the blocks listed in the above description, and current sensors and voltage sensors are indicated as measuring blocks.

The above information allows a specialist to implement the proposed invention using known means and methods, while the considered significant distinguishing features ensure the achievement of the above technical results.

Information sources

1. RU 2028642 C1, 02/09/1995.

2. RU 2277713 C1, 06/10/2006.

3. The journal "Modern Electronics", 2010, No. 4, p. 52-53.

Claims (2)

A power supply network simulator comprising: at least one programmable direct current source, at least one programmable alternating current source, a pulsed noise generator, a switching unit, at least one measuring unit, a control unit, wherein said constant sources and alternating current is made with the possibility of converting the energy supplied to their inputs into output currents with predetermined parameters, while the outputs of these current sources and a pulse generator interference are associated with the inputs of the switching unit, the outputs of which are configured to communicate with the corresponding inputs of at least one device under test and at least one measuring unit, characterized in that a local area network (LAN), a network a switch, a data processing server, an isolation control device, remote controllers, at least one data acquisition controller, an exact time server connected to a GPS / GLONASS antenna, and the control unit The phenomena are made in the form of an automated workstation (AWS) of the operator, and the operator's AWS, data processing server, remote control, data acquisition controller, exact time server, inputs of the indicated current sources and impulse noise generator are connected via a LAN via a network switch, the isolation control device at least one data acquisition controller and configured to measure the insulation resistance of the circuit simulator, at least one measuring unit is configured to measure the characteristics of the signal at the output of the switching unit and is connected to the data acquisition controller, and the remote control and operator's workstation are additionally configured to transmit information over the speakerphone network. 2. The simulator according to claim 1, characterized in that the remote control contains control means made in the form of a touch panel and / or analog manipulators.

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