NORMS AND METHODS FOR DETERMINING THE ELECTROMAGNETIC COMPATIBILITY OF MODERN AUTOMATIC LOCOMOTIVE SIGNALING SYSTEMS AND ELECTRIC ROLLING STOCK WITH AN ASYNCHRONOUS TRACTION DRIVE ON THE SUBWAY
Annotation:
The article provides a brief overview of the development and application of automatic control
systems for subway trains. Modern automatic locomotive signaling systems featuring automatic
speed control with signal transmission based on double-phase-diff erence modulation are analyzed.
The introduction of electric rolling stock with an asynchronous traction drive and advanced train traffi c
automation and remote control systems at the St. Petersburg Metro initiates the drive to ensure their
electromagnetic compatibility. For the subway train traffi c automation and remote control systems,
there have been no acceptance criteria for electromagnetic interference that occur in their operating
range when electric rolling stock with an asynchronous traction drive is put into operation. The
article identifi es the main sources of conducted electromagnetic interference and the routes of their
penetration into the receive path of automatic locomotive signaling devices with automatic speed
control. A method is proposed for determining the limits of hazardous and interfering eff ects (immunity
limits) for automatic train signaling systems with automatic speed regulation of the systems of the BARS
automatic speed control unit with phase-diff erence modulation and the upgraded PA-M (ПА-М) train
automation with phase-diff erence modulation for the St. Petersburg Metro lines. A method is given
for the transition from the immunity limits of automatic locomotive signaling systems with automatic
speed control to the emission limits of electric rolling stock at diff erent traction current unbalance
factors. A technique for measuring traction current at high-potential points on electric rolling stock is
considered. A technique for assessing the levels of conducted electromagnetic interference from
electric rolling stock by calculating the effective value in a sliding window of a pre-fi lteredtraction
current signal of an electric rolling stock is presented
Key words:
Automatic train signaling with automatic speed regulation with phase-diff erence modulation,
asynchronous traction drive, conducted electromagnetic interference, interference limit, interfering
electromagnetic interference, hazardous electromagnetic interference, traction current, digital signal
processing