Abstract
As production and life require more and more high-end and precise power equipment, high-quality electrical energy becomes the basis for the operation of these equipment. The impact of voltage sags on these devices has also increased. The quantification of the impact of voltage sags on various sensitive equipment through tests is an important basis for equipment manufacturers to improve the equipment’s ability to withstand voltage sag and users to take governance measures. The existing test schemes are to manually change the voltage sag conditions, repeatedly test, manually analyze the test data and draw the voltage sag tolerance curve. The actual process operation is trivial and has low degree automation, which consumes a lot of human resources. This paper put forward an auto test system, it comprehensively considers the characteristics of voltage sag, sensitive equipment types, attributes, and load status, automatically generates voltage characteristic vectors, automatically tests and resets the equipment, automatically analyzes the experimental results and draws the voltage sag tolerance curve, which greatly reduces the test time and labor costs.
Highlights
Voltage sag refers to the situation where the effective value of the output voltage suddenly drops in a certain period of time, and after maintaining for a period of time, it returns to the normal output voltage
Considering the shortcomings of traditional test point selection method, this paper proposes a new method of top-down with accurate calculation, which can realize the complete automation of the overall test, and greatly improve the accuracy and efficiency of the test
The automatic test system is used for the typical sensitive equipment of power system, so this paper just considers the characteristic of these equipment
Summary
Voltage sag refers to the situation where the effective value of the output voltage suddenly drops in a certain period of time, and after maintaining for a period of time, it returns to the normal output voltage. Based on the existing standard test items and test schemes, a complete set of automatic test methods for voltage sag tolerance of sensitive equipment is proposed. Considering the shortcomings of traditional test point selection method, this paper proposes a new method of top-down with accurate calculation, which can realize the complete automation of the overall test, and greatly improve the accuracy and efficiency of the test This automatic test system generates the required voltage sag characteristic vector for the typical test circuit of ACC, PLC and ASD. This system collects experimental data at the same time, automatically analyses and draws the voltage sag tolerance curve quickly. It greatly shortens the experiment time and reduces the workload of the experimenters, provides an experimental basis for quantifying the voltage sag tolerance of the equipment, and lays the foundation for understanding the tolerance level of sensitive equipment and formulating test standards for equipment tolerance levels
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
