Research Article

Reliability Estimation of Low-Voltage Power Distribution Systems

Table 4

Description of intermediate and BEs in the FT.

SymbolDescription

TELow-voltage electrocution
X1Direct low-voltage electrocution
X2Indirect low-voltage electrocution
X3Contact with electrified wet foundations
X4Contact with the body of electrified panels
X5Energizing of etrye
X6Contact with pedestals of the street lights
X7Contact of electrified wire with base
X8Energizing pole with etrye
X9Lack of protective layers (subcategory of X4)
X10Lack of protective layers (subcategory of X6)
X11Unwanted contact with the power grid
X12Unwanted electrification
X13No power outage
X14Human error of personnel
X15Entering the privacy of the electricity network
X16Availability of electrical network equipment
X17Human error (subcategory of X12)
X18Induction of parallel or cross lines
X19Reversible voltage
X20Human error (subcategory of X13)
BE1Sliding the wire over the insulator and hitting the base
BE2Unwanted collision with wires and conductors of adjacent circuits
BE3Tearing the wire and falling on the power poles
BE4Insulator leakage (subcategory of X8)
BE5Insulator breakage (subcategory of X8)
BE6Connecting the electrified wire and colliding with the body of the panel
BE7Lack of protective earth (subcategory of X9)
BE8Lack of double insulation (subcategory of X9)
BE9Insulator leakage (subcategory of X5)
BE10Insulator breakage (subcategory of X5)
BE11Unwanted collision with wires and conductors of adjacent circuits
BE12Connecting live wire and colliding with the metal body of the street light
BE13Lack of protective earth (subcategory of X10)
BE14Lack of double insulation (subcategory of X10)
BE15Lack of attention to adjacent networks
BE16Not using personal and group protection equipment to work with the electrical network
BE17Use of inappropriate tools
BE18Contact of metal objects with the live wire
BE19Scaffold contact with the live wire
BE20Contact of crane boom with the live wire
BE21Stealing electrical wires
BE22Non-observance of horizontal and vertical privacy in network construction
BE23The openness of doors for public distribution panels
BE24Dealing with adjacent conductors
BE25No installation of the earth (subcategory of X17)
BE26Connecting wrong
BE27No installation of the earth (subcategory of X18)
BE28Failure to observe the allowable line spacing
BE29No installation of the earth (subcategory of X18)
BE30Return of street lighting
BE31Return from subscribers
BE32Short circuit of the electrical circuit breaker equipment
BE33Defective power cut equipment
BE34Disconnecting the circuit incorrectly
BE35Lack of familiarity with network topology
BE36Starting work in a hurry and forgetting about the circuit breaker