Smart Grid Nontechnical Loss Detection Based on Power Gateway Consortium Blockchain

Algorithm 1

Contract for audit.

	Input: HANpurchaseInfo = {UserID, SMID, Purchase amount, TimeStamp}
	Output: Audit Result
(1)	functionNTL(HANpurchaseInfo)
(2)	get the state of the Smart Meter
(3)	if State = offline then
(4)	return Send warning to Auditors
(5)	else
(6)	Send request to the corresponding Smart Meter
(7)	get HANsm = {SMID, UserID, SOC} sent from Smart Meter
(8)	get HANgw = {SMID, UserID, Current Time, Tlast,Elast} from HAN
(9)	if (Elast-SOC)-E_Output > threshold then
(10)	return Send warning to Auditors
(11)	else
(12)	Purchasing Time = TimeStamp
(13)	SOC = SOC + Purchase amount
(14)	send HANgw1 = {SMID, UserID, Current Time, Purchasing Time, ATE} to BlockChain
(15)	send update to user’s smart meter
(16)	return Normal
(17)	end if
(18)	end if
(19)	end function