A Fault Prediction and Cause Identification Approach in Complex Industrial Processes Based on Deep Learning

Table 2

Fault description.

Fault index	Type	Time delay	Number of samples	Description
Fault1	Step	None	600	A/C feed ratio, B composition constant
Fault2	Step	None	600	B composition, A/C ratio constant
Fault3	Step	None	600	D feed temperature
Fault4	Step	40 minutes	600	Reactor cooling water inlet temperature
Fault5	Step	40 minutes	600	Condenser cooling water inlet temperature
Fault6	Step	40 minutes	600	A feed loss
Fault7	Step	40 minutes	700	C header pressure loss-reduced availability
Fault8	Random	40 minutes	600	A, B, C feed composition
Fault9	Random	40 minutes	600	D feed temperature
Fault10	Random	None	600	C feed temperature
Fault11	Random	None	600	Reactor cooling water inlet temperature
Fault12	Random	50	700	Condenser cooling water inlet temperature
Fault13	Slow drift	None	600	Reaction kinetics
Fault14	Sticking	40 minutes	600	Reactor cooling water valve
Fault15	Sticking	None	600	Condenser cooling water valve
Fault16	Unknown	40 minutes	700	Unknown
Fault17	Unknown	40 minutes	600	Unknown
Fault18	Unknown	None	600	Unknown
Fault19	Unknown	None	600	Unknown
Fault20	Unknown	None	600	Unknown
Normal	—	—	17700	A/C feed ratio, B composition constant