Electric power intelligent monitoring and protection module function test

functional testing

Project Case

Electric power intelligent monitoring and protection module function test

In the field of power, intelligent single-phase recloser, as a substitute product of fuse, solves some shortcomings of traditional fuse in protection performance and reliability, provides a more advanced and reliable protection scheme for power system, and reduces maintenance cost and workload. Its core functions are intelligent monitoring of high-voltage power lines (grid voltage/grid current/load current), remote control (remote power failure/remote closing)/and line protection (load grid short-circuit protection/load grid leakage protection). The products are powered by super capacitors and have long standby time/low power consumption. In order to ensure the normal and stable functions, its control module needs to carry out a series of strict functional tests.

Test requirements

ICT Static test
Voltage and current measurement
Program burning of main chip
Bluetooth communication test
Writing of SN of product
Boundary scan test
Low voltage charging test
High voltage charging test

Reed switch function test
Motor output test
NTC temperature function test
Power grid current acquisition module test
LED color brightness test
Test LOG data traceability
Support MES system
Fully automatic test

Embodiment

Through the detailed interpretation of the test requirements, PTI ‘s current standard equipment PTI818S meets all the required test functions, so this project uses PTI818S for scheme implementation. The scheme flow chart is as follows:

PTI-818SStandard Function

STANDARD FEATURES

Phase difference measurementPhase relation of fixed multi-period signal

Optical coupler measurementThe performance and working state of photoelectric coupler are detected

Multi-endpoint element measurementMulti-method inspection of electrical characteristics to ensure normal components

R,L,C Component value measurementMeasurement of resistance, capacitance and inductance

Diode measurementDiode and zener diode measurement

Capacitance polarity measurementLeakage current polarity test method, Test Jet measures the polarity of bile capacitor

GPIO16 input and output GPIO ports

Current measurementAutomatic test program generation technology

Program burning

Flashing Firmware

Use the Segger J-link lite utility to refresh the FCB eco-link board through the SWD interface.

Pin Name	Wire Color
3.3V Supply Pin	Red
GND	Brown
SWDIO	Orange
SWCLK	Yellow

LED Test

In the project, the power board of TPC11 is 8.2V @ 200mA, and the LED test module is used to detect the red and green intensity of LED. Specifically, the green LED is enabled by shorting M 26-Gate to GND, and the red LED is enabled by shorting M13-Gate to GND, and the results are recorded as Project -1 and Project -2.

Bluetooth communication test

The self-checking communication of circuit board (the state monitoring of voltage and current of products) is monitored and controlled remotely through Bluetooth. Write the program into the motherboard, and establish communication with the motherboard through an external RF receiver.

Equipment shot