Research on Electrical Equipment Monitoring and Early Warning System Based on Internet of Things Technology

Table 1

Comparison between measured voltage and predicted voltage.

Serial number	Measured value	Kalman algorithm		BP algorithm		Kalman-BP algorithm
Time	Company_V	Forecast	Error	Forecast	Error	Forecast	Error
1	224.0	220.3	−3.7	221.3	−2.7	223.0	−1.0
2	227.0	222.0	−5	222.7	−4.3	223.5	−3.5
3	227.1	221.2	−5.9	223.2	−3.9	224.0	−3.1
4	228.5	223.6	−4.9	223.7	−4.8	224.3	−4.2
5	224.1	226.1	2.0	225.9	1.8	224.8	0.7
6	223.9	220.5	−3.4	226.6	2.7	224.9	1.0
7	227.8	221.1	−6.7	225.1	−2.7	225.7	−2.1
8	227.5	223.3	−4.2	223.2	−4.3	223.9	−3.6
9	226.5	221.4	−5.1	220.2	−6.3	222.0	−4.5
10	222.0	228.8	6.8	229.5	7.5	227.8	5.8
11	222.2	230.1	7.9	229.6	7.4	227.5	5.3
12	222.5	232.5	10	231.2	8.7	228.5	6.0