5 Calculation formulas
35
Active energy (consumed
and supplied)
E
P+
E
P-
Wh
𝐸
𝑃+
= ∑ 𝑃
+
(𝑖)𝑇(𝑖)
𝑀
𝑖=1
𝑃
+
(𝑖) = {
𝑃(𝑖) 𝑓𝑜𝑟 𝑃(𝑖) > 0
0 𝑓𝑜𝑟 𝑃(𝑖) ≤ 0
𝐸
𝑃−
= ∑ 𝑃
−
(𝑖)𝑇(𝑖)
𝑀
𝑖=1
𝑃
−
(𝑖) = {
|𝑃(𝑖)| 𝑓𝑜𝑟 𝑃(𝑖) < 0
0 𝑓𝑜𝑟 𝑃(𝑖) ≥ 0
where:
i
is subsequent number of the 10/12-period measure-
ment window
P(i)
represents active power
P
calculated in
i
-th measur-
ing window
T(i)
represents duration of
i
-th measuring window (in
hours)
Budeanu reactive energy
(consumed and supplied)
E
QB+
E
QB-
varh
𝐸
𝑄𝐵+
= ∑ 𝑄
𝐵+
(𝑖)𝑇(𝑖)
𝑀
𝑖=1
𝑄
𝐵+
(𝑖) = {
𝑄
𝐵
(𝑖) 𝑓𝑜𝑟 𝑄
𝐵
(𝑖) > 0
0 𝑓𝑜𝑟 𝑄
𝐵
(𝑖) ≤ 0
𝐸
𝑄𝐵−
= ∑ 𝑄
𝐵−
(𝑖)𝑇(𝑖)
𝑀
𝑖=1
𝑄
𝐵−
(𝑖) = {
|𝑄
𝐵
(𝑖) | 𝑓𝑜𝑟 𝑄
𝐵
(𝑖) < 0
0 𝑓𝑜𝑟 𝑄
𝐵
(𝑖) ≥ 0
where:
i
is subsequent number of the 10/12-period measure-
ment window
Q
B
(i)
represents Budeanu active power
Q
B
calculated in
i
-th measuring window
T(i)
represents duration of
i
-th measuring window (in
hours)
Reactive energy of fun-
damental component
(consumed and supplied)
E
Q1+
E
Q1-
varh
𝐸
𝑄1+
= ∑ 𝑄
1+
(𝑖)𝑇(𝑖)
𝑀
𝑖=1
𝑄
1+
(𝑖) = {
𝑄
1
(𝑖) 𝑓𝑜𝑟 𝑄
1
(𝑖) > 0
0 𝑓𝑜𝑟 𝑄
1
(𝑖) ≤ 0
𝐸
𝑄1−
= ∑ 𝑄
1−
(𝑖)𝑇(𝑖)
𝑀
𝑖=1
𝑄
1−
(𝑖) = {
|𝑄
1
(𝑖) | 𝑓𝑜𝑟 𝑄
1
(𝑖) < 0
0 𝑓𝑜𝑟 𝑄
1
(𝑖) ≥ 0
where:
i
is subsequent number of the 10/12-period measure-
ment window
Q
1
(i)
represents reactive power of fundamental compo-
nent
Q
1
calculated in
i
-th measuring window
T(i)
represents duration of
i
-th measuring window (in
hours)
Summary of Contents for PQM-700
Page 85: ...85 Notes...
