Power automatic converter test platform

Abstract

The utility model provides an electric power automatic converter test platform, which realizes automatic on-off operation and durability test of a converter through an electromagnetic counter and a time relay, and is equipped with a three-phase comprehensive electrical parameter instrument to monitor voltage, current and power in real time and comprehensively evaluate the performance of the converter under different load conditions. The platform adopts a modular design and comprises a control panel, a test assembly and a power supply module. The control panel integrates display and control functions, and the test assembly comprises an on-off durability test module, a load / no-load test module and a three-phase comprehensive electrical parameter instrument. Through the load / no-load test module and the ripple resistor, various load scenes can be simulated, and comprehensive performance test can be carried out on the converter. In addition, the platform is further provided with a cooling system, so that the stability of the equipment under long-time operation is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automation testing especially relates to a power automatic converter test platform. BACKGROUND

[0002] Power automatic converter is usually used to automatically switch to standby power when the main power fails, so as to maintain the normal operation of the system, and the power automatic converter is one of the important equipment to ensure the continuity of power supply in the power system. In order to ensure its long-term and stable working performance, the reliability test of the converter is an indispensable link.

[0003] The existing power automatic converter test equipment can complete the basic performance test, however, these existing equipment still has the following shortcomings in practical application:

[0004] The traditional power automatic converter test equipment is complex in operation, and the test process is tedious, usually manual intervention is needed to switch the test steps and record data, and the test efficiency is low. Especially when long-term durability test is needed, manual recording of test times and control time not only increases the operation difficulty, but also easily introduces human error, further reduces the credibility of test results.

[0005] At the same time, the existing power automatic converter test platform usually pays attention to the basic voltage and current information, and ignores the more critical power parameters such as power and frequency. Therefore, in actual test, the working performance of the converter under different load conditions cannot be comprehensively and accurately evaluated. This leads to inaccurate test results, and it is difficult to find potential fault hidden danger, which affects the safety and stability of the power system. UTILITY MODEL CONTENTS

[0006] In view of the deficiencies in the prior art, the utility model provides a power automatic converter test platform, which realizes automatic and accurate evaluation of the working performance of the power automatic converter under different load conditions.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme:

[0008] A power automatic converter test platform, comprising a test assembly, a control panel and a power module;

[0009] The control panel comprises a display module and a control module for controlling the test assembly; the test assembly comprises a on-off endurance test module, a load / no-load test module, a three-phase comprehensive electric parameter instrument, an electromagnetic counter and a time relay; the power module rectifies and filters the external AC power and connects the input end of the electromagnetic counter through the output end to provide power supply for the test assembly; the output end of the electromagnetic counter is connected to the input end of the time relay for recording the on-off times of the power supply, the counting output end of the electromagnetic counter is connected to the display module of the control panel and is used for outputting the recorded on-off times to the display module of the control panel in real time; the output end of the time relay is connected to the input end of the power automatic converter to be detected, and the control end of the time relay is connected to the control module of the control panel for setting the time interval of the on-off operation of the time relay.

[0010] The detection end of the three-phase comprehensive electric parameter instrument is connected to the output end of the power automatic converter to be detected for detecting the change of the electric parameters, the output end of the three-phase comprehensive electric parameter instrument is connected to the display module of the control panel and is used for displaying the three-phase voltage, current, active power, reactive power, power factor, frequency and other electric parameters in real time; the input end of the load / no-load test module is connected to the output end of the power automatic converter to be detected for the circuit no-load and load endurance test, and the control end of the load / no-load test module is connected to the control module of the control panel for switching the no-load and load lines; the input end of the on-off endurance test module is connected to the output end of the power automatic converter to be detected, and the control signal is sent to the control end of the on-off endurance test module when the switching state of the power automatic converter changes, triggering the on-off operation of the on-off endurance test module to simulate the on-off of the real load circuit, and the output end of the on-off endurance test module is connected to the display module of the control panel for displaying the on-off state of the system.

[0011] Further, the on-off endurance test module comprises a transformer and a circuit breaker; the input end of the transformer serves as the input end of the on-off endurance test module, and the output end of the transformer is connected to the input end of the circuit breaker; the control end of the circuit breaker receives the control signal output from the control end of the power automatic converter and performs the closing and opening actions, and the output end of the circuit breaker serves as the output end of the on-off endurance test module.

[0012] Further, the transformer comprises two voltage reduction units, and the outputs of the voltage reduction units are connected to the input end of the circuit breaker to provide power input for the circuit breaker.

[0013] Further, the test assembly further comprises a current transformer; the current transformer is arranged between the output end of the power automatic converter to be tested and the detection end of the three-phase comprehensive electric parameter instrument for directly monitoring the current of the power automatic converter and feeding back to the three-phase comprehensive electric parameter instrument.

[0014] Further, the utility model still includes a load cabinet, control panel is installed on the inclined plane of load cabinet surface front inclination angle 15 degrees to clear view the state of display module and control module on the panel under normal standing posture of operator, the front of control panel is provided with the test platform of extending out the cabinet body for placing the device of waiting for testing, test assembly is installed in the inside of load cabinet, load cabinet adopts glass fiber reinforced polyester board.

[0015] Beneficial effect: the utility model provides a kind of electric power automatic converter test platform, and the automatic recording of automatic on-off operation and durability test number of times of electric power automatic converter is realized by the combination of electromagnetic counter and time relay, significantly simplifies test procedure;Test platform is equipped with three-phase comprehensive electric parameter instrument, can real-time measurement and display voltage, current, power, frequency three kinds of key electric power parameters and convert into active power, reactive power and power factor, this improvement solves the deficiency that traditional equipment only pays attention to basic voltage and current information, so that test platform can more comprehensive evaluation to the performance of electric power automatic converter;Load cabinet adopts glass fiber reinforced polyester board to ensure the physical isolation between test module in test assembly and operator;Through the control panel inclination angle 15 degrees design and extension test platform, meet ergonomics, it is convenient for operator to clearly view display module and control module on the panel under normal standing posture and connect the device of waiting for testing, reduce excessive bending or head operation, to reduce operation fatigue, improve the convenience and safety of equipment operation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is test platform system structural diagram of an embodiment of the utility model;

[0017] Figure 2 It is load cabinet structural diagram of an embodiment of the utility model.

[0018] In the above drawing:

[0019] 1, test assembly;2, control panel;3, power module;4, on-off durability test module;5, load / no-load test module;6, three-phase comprehensive electric parameter instrument;7, electromagnetic counter;8, time relay;9, current transformer;10, transformer;11, circuit breaker;12, state display lamp;13, change-over switch;14, cooling system;15, load cabinet;16, nixie tube;17, liquid crystal display;18, power switch;19, test bench;20, knob. DETAILED DESCRIPTION

[0020] Embodiments of the present application are described in detail below with reference to the attached drawing figures, wherein the examples of embodiments can be implemented in a variety of forms, and should not be construed as being limited to the examples set forth herein; rather, these embodiments are provided so that the present application will be more thoroughly and completely conveyed to those skilled in the art, and so that the conceptual aspects of the example embodiments will be fully conveyed to those skilled in the art. In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", and "linking" should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integral connection; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be internal connection of two elements, and those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0021] The test platform system structure of one embodiment of the utility model for new type as Figure 1 The utility model discloses a test platform system structure of one embodiment of the utility model for new type as shown in the drawing, including test subassembly 1, control panel 2 and power module 3.

[0022] Test subassembly includes including on-off durability test module 4, load / no-load test module 5, three-phase comprehensive electric parameter appearance 6, electromagnetic counter 7 and time relay 8.

[0023] Power module 3 is connected with the input end of electromagnetic counter 7 after rectifying filter of external alternating current, and provides power supply for test subassembly 1, and power module 3 is connected with power switch 18 on control panel 2 and is used to switch test platform.

[0024] The output end of electromagnetic counter 7 is connected with the input end of time relay 8 and is used to record the number of power on-off, and the counting output end of electromagnetic counter 7 is connected with nixie tube 16 on control panel 2 and is used to display the recorded on-off number in real time, and the output end of time relay 8 is connected with the input end of the power automatic changer to be tested and is used to control the time interval of power automatic changer on-off operation, and the control end of time relay 8 is connected with knob 20 on control panel 2 and is used to set circuit on-off time interval;The combination of electromagnetic counter 7 and time relay 8 realizes the automatic on-off operation of power automatic changer and the automatic recording of durability test number, and significantly simplifies the test process.

[0025] The detection end of the three-phase comprehensive electric parameter instrument 6 is connected with the output end of the power automatic converter for detecting the change of electric parameters; the current transformer 9 is arranged between the output end of the power automatic converter to be tested and the detection end of the three-phase comprehensive electric parameter instrument 6, for directly monitoring the current of the power automatic converter and feeding back to the three-phase comprehensive electric parameter instrument 6. The three-phase comprehensive electric parameter instrument 6 configured in the embodiment can measure the voltage, current and frequency three electric power parameters in real time and convert them into active power, reactive power and power factor, which are displayed on the liquid crystal display screen 17 equipped on the control panel 2. The improvement solves the deficiency of the traditional device which only pays attention to the basic voltage and current information, so that the test platform can comprehensively evaluate the performance of the power automatic converter.

[0026] The on-off durability test module 4 includes a transformer 10 and a circuit breaker 11; the input end of the transformer 10 is connected with the output end of the power automatic converter, the transformer 10 includes two voltage reduction units, the voltage reduction units reduce the voltage of the power supply from 220V to 110V and connect the voltage to the circuit breaker 11 in two ways, to provide power input for the circuit breaker 11; the control end of the circuit breaker 11 receives the control signal output from the control end of the power automatic converter and performs the on-off action; the output end of the circuit breaker 11 is connected with the state display lamp 12 on the control panel 2 as the output end of the on-off durability test module 4, for displaying the on-off state of the system.

[0027] The load / no-load test module 5 includes a corrugated resistance and a switching switch 13; the corrugated resistance is a corrugated resistance with a rated power of 20kW and a rated current of 30A. The two ends of the corrugated resistance are respectively connected with the input end and the output end of the load / no-load test module 5; the switching switch 13 is arranged on the control panel 2; when the switching switch 13 is switched to the loading line, the corrugated resistance is connected with the output end of the power automatic converter as a load, to form a load circuit for simulating the actual load condition; in the no-load test mode, the switching switch 13 is switched to the no-load line, and the two ends of the no-load line are short-circuited to the corrugated resistance, to simulate the working condition of the system in the no-load state.

[0028] The output end of the load / no-load test module 5 is connected with the cooling system 14 for preventing the system from overheating during the load test; the cooling system 14 used in the embodiment is a fan.

[0029] In the embodiment, the automatic on-off operation of the power automatic converter and the automatic recording of the number of durability tests are realized by the combination of the electromagnetic counter 7 and the time relay 8, which significantly simplifies the test process.

[0030] As Figure 2The load cabinet 15 schematic view of one embodiment of the utility model is shown, the control panel 2 is installed on the inclined plane of the load cabinet surface front inclination angle 15 degrees, the front of control panel 2 is provided with the test bench 19 of extending out the cabinet body for placing the device to be tested;The test assembly 1 is installed in the inside of the load cabinet;The load cabinet 15 adopts glass fiber reinforced polyester board, to ensure the physical isolation between the test module in test assembly 1 and operator. Through the control panel 2 front inclination angle 15 degrees design and extension test bench 19, meet the ergonomics, facilitate operator to clearly view the display module and control module on the panel and connect the device to be tested under normal standing posture, reduce excessive bending or head operation, thereby reduce the operation fatigue, improve the convenience and safety of equipment operation.

[0031] The control panel 2 in the embodiment is connected with test assembly 1 and power module 3 through wire;In the embodiment, power module 3 is connected with alternating current and carries out rectification filtering, provides power for the whole system through electromagnetic counter 7 and time relay 8, and the system sets the time interval of time relay 8 (the time period of controlling on-off) and the initial value of electromagnetic counter 7 according to the no-load / load / on-off test mode selected on control panel 2.

[0032] The system runs in no-load test mode, and is not connected with any external load, at this time, time relay 8 carries out on-off operation according to the set time interval, controls the working period of power automatic converter;Three-phase comprehensive electric parameter instrument 6 is used for detecting the output voltage, current and frequency parameters of power automatic converter in real time, and displays the current voltage, current, power and other no-load state electric parameter information through the display module of control panel 2.

[0033] Finally, it is explained that the above embodiment is only used to illustrate the technical scheme of the application and is not limited, although the application is described in detail with reference to the preferred embodiment, those skilled in the art should understand that the technical scheme of the application can be modified or replaced, without departing from the purpose and scope of the technical scheme of the application, which should be covered in the claim range of the application.

Claims

1. A test platform for an automatic power converter, characterized in that, Includes test components, control panel, and power module; The control panel includes a display module and a control module for controlling the test components; The test components include a continuity test module, a load / no-load test module, a three-phase comprehensive electrical parameter meter, an electromagnetic counter, and a time relay; The power module rectifies and filters the external AC power and then connects the output terminal to the input terminal of the electromagnetic counter. The output terminal of the electromagnetic counter is connected to the input terminal of the time relay, and the counting output terminal of the electromagnetic counter is connected to the display module of the control panel, and is used to output the count to the display module of the control panel. The output terminal of the time relay is connected to the input terminal of the power automatic converter under test, and the control terminal of the time relay is connected to the control module of the control panel to set the time interval for the on and off operation of the time relay. The detection end of the three-phase integrated electrical parameter instrument is connected to the output end of the power automatic converter under test. The output end of the three-phase integrated electrical parameter instrument is connected to the display module of the control panel and displays three electrical parameters, namely voltage, current and frequency, as well as the converted active power, reactive power and power factor. The input terminal of the load / no-load test module is connected to the output terminal of the power automatic converter under test, and the control terminal of the load / no-load test module is connected to the control module of the control panel to switch between no-load and load lines. The input terminal of the continuity endurance test module is connected to the output terminal of the power automatic converter under test. When the switch state of the power automatic converter changes, it sends a control signal to the control terminal of the continuity endurance test module to trigger the continuity operation of the continuity endurance test module. The output terminal of the continuity endurance test module is connected to the control panel display module to display the continuity status of the system.

2. The power automatic converter test platform according to claim 1, characterized in that, The continuity and switching durability test module includes a transformer and a circuit breaker; The input terminal of the transformer serves as the input terminal of the continuity and breaking durability test module, and the output terminal of the transformer is connected to the input terminal of the circuit breaker. The control terminal of the circuit breaker receives the control signal output from the control terminal of the automatic power converter and performs closing and opening actions. The output terminal of the circuit breaker serves as the output terminal of the continuity and durability test module.

3. The power automatic converter test platform according to claim 2, characterized in that, The transformer includes two step-down transformer units, and the output of the step-down transformer unit is connected to the input of the circuit breaker.

4. The power automatic converter test platform according to claim 1, characterized in that, The test assembly also includes a current transformer; The current transformer is positioned between the output of the power automatic converter under test and the detection end of the three-phase integrated electrical parameter instrument, and is used to feed back current information to the three-phase integrated electrical parameter instrument.

5. A power automatic converter test platform according to claim 1, characterized in that, It also includes a cooling system; The output of the load module is connected to the cooling system for continuous heat dissipation during load testing to prevent the system from overheating. The cooling system is installed at the bottom of the load cabinet, and the load cabinet has ventilation holes for heat dissipation on the side near the cooling system. The cooling system includes one or more of a fan and a liquid cooling system.

6. A dual-power transfer switch system according to claim 1, characterized in that, The load / no-load test module includes a ripple resistor and a changeover switch; The control terminal of the changeover switch serves as the control terminal of the load / no-load test module and is connected to the control module of the control panel. The corrugated resistor is a corrugated resistor with a rated power of not less than 20kW and a rated current of not less than 30A. The two ends of the corrugated resistor are respectively used as the input and output terminals of the load / no-load test module. In load test mode, the changeover switch is switched to the load line, and the ripple resistor is connected as a load to the output terminal of the power automatic converter to form the load line; In the no-load test mode, the switch is switched to the no-load line, and the two ends of the no-load line are short-circuited with a ripple resistor to form a no-load line.

7. The power automatic converter test platform according to claim 1, characterized in that, The control panel's display module includes status indicator lights, an LCD screen, and a digital tube; the status indicator lights are connected to the output terminal of the circuit breaker to display the on / off status of the on / off durability test module; the LCD screen is connected to the output terminal of the three-phase comprehensive electrical parameter meter to display various electrical parameters; and the digital tube is connected to the electromagnetic counter display terminal of the electromagnetic counter. The control module of the control panel includes a knob, a power switch, and a selector switch; the knob is connected to the control terminal of the time relay for setting the on / off time interval of the time relay; the selector switch is connected to the control terminal of the load / no-load test module for switching the load / no-load circuit; the power switch is connected to the power module and is used to switch the test platform.

8. The power automatic converter test platform according to claim 1, characterized in that, It also includes a load cell; The control panel is mounted on an inclined surface of the load cabinet with a forward tilt angle of 15 degrees; a test platform extending from the control panel for placing the device under test is provided in front of the control panel; the test components are installed inside the load cabinet. The load cell is made of glass fiber reinforced polyester board.

Images