The megavolt-ampere reactive (MVAR) is a unit of measurement used in electrical systems to quantify reactive power, which is the non-working power component in an AC circuit. Unlike real power (measured in watts), which performs actual work, reactive power is essential for maintaining voltage levels necessary for active power to flow through the grid. Think of it like the foam on a latte—it doesn’t contribute to the coffee’s caffeination but is critical for its quality and structure.
Engineers use MVARs to optimize the efficiency of power delivery, ensuring systems don’t become overloaded. This balance is vital for the stability of power grids, especially as renewable energy sources like wind and solar, which are often variable and intermittent, become more prevalent in our energy mix.
Millivolt-Ampere Reactive (mVAR) is a lesser-known unit often used in electrical engineering to measure reactive power in smaller-scale applications. Unlike active power, which does the actual work, reactive power is essential for maintaining voltage stability and transferring energy in AC circuits. Reactive power exists due to the phase difference between current and voltage in inductive or capacitive loads, causing energy to oscillate between source and load rather than being consumed.
The “milli” prefix denotes one-thousandth, making 1 mVAR equal to 0.001 VARs. Understanding and managing reactive power at this scale is crucial in sensitive electronics or communication systems, where even minor fluctuations can affect performance. It highlights the delicate balance within power systems that engineers must maintain for efficiency and reliability.
Megavolt-Amperes Reactive | Millivolt-Amperes Reactive |
---|---|
0
MVAR
|
0
mVAR
|
1
MVAR
|
1e+9
mVAR
|
2
MVAR
|
2e+9
mVAR
|
3
MVAR
|
3e+9
mVAR
|
4
MVAR
|
4e+9
mVAR
|
5
MVAR
|
5e+9
mVAR
|
6
MVAR
|
6e+9
mVAR
|
7
MVAR
|
7e+9
mVAR
|
8
MVAR
|
8e+9
mVAR
|
9
MVAR
|
9e+9
mVAR
|
10
MVAR
|
1e+10
mVAR
|
11
MVAR
|
1.1e+10
mVAR
|
12
MVAR
|
1.2e+10
mVAR
|
13
MVAR
|
1.3e+10
mVAR
|
14
MVAR
|
1.4e+10
mVAR
|
15
MVAR
|
1.5e+10
mVAR
|
16
MVAR
|
1.6e+10
mVAR
|
17
MVAR
|
1.7e+10
mVAR
|
18
MVAR
|
1.8e+10
mVAR
|
19
MVAR
|
1.9e+10
mVAR
|
20
MVAR
|
2e+10
mVAR
|
21
MVAR
|
2.1e+10
mVAR
|
22
MVAR
|
2.2e+10
mVAR
|
23
MVAR
|
2.3e+10
mVAR
|
24
MVAR
|
2.4e+10
mVAR
|
25
MVAR
|
2.5e+10
mVAR
|
26
MVAR
|
2.6e+10
mVAR
|
27
MVAR
|
2.7e+10
mVAR
|
28
MVAR
|
2.8e+10
mVAR
|
29
MVAR
|
2.9e+10
mVAR
|
30
MVAR
|
3e+10
mVAR
|
31
MVAR
|
3.1e+10
mVAR
|
32
MVAR
|
3.2e+10
mVAR
|
33
MVAR
|
3.3e+10
mVAR
|
34
MVAR
|
3.4e+10
mVAR
|
35
MVAR
|
3.5e+10
mVAR
|
36
MVAR
|
3.6e+10
mVAR
|
37
MVAR
|
3.7e+10
mVAR
|
38
MVAR
|
3.8e+10
mVAR
|
39
MVAR
|
3.9e+10
mVAR
|
40
MVAR
|
4e+10
mVAR
|
41
MVAR
|
4.1e+10
mVAR
|
42
MVAR
|
4.2e+10
mVAR
|
43
MVAR
|
4.3e+10
mVAR
|
44
MVAR
|
4.4e+10
mVAR
|
45
MVAR
|
4.5e+10
mVAR
|
46
MVAR
|
4.6e+10
mVAR
|
47
MVAR
|
4.7e+10
mVAR
|
48
MVAR
|
4.8e+10
mVAR
|
49
MVAR
|
4.9e+10
mVAR
|
50
MVAR
|
5e+10
mVAR
|
51
MVAR
|
5.1e+10
mVAR
|
52
MVAR
|
5.2e+10
mVAR
|
53
MVAR
|
5.3e+10
mVAR
|
54
MVAR
|
5.4e+10
mVAR
|
55
MVAR
|
5.5e+10
mVAR
|
56
MVAR
|
5.6e+10
mVAR
|
57
MVAR
|
5.7e+10
mVAR
|
58
MVAR
|
5.8e+10
mVAR
|
59
MVAR
|
5.9e+10
mVAR
|
60
MVAR
|
6e+10
mVAR
|
61
MVAR
|
6.1e+10
mVAR
|
62
MVAR
|
6.2e+10
mVAR
|
63
MVAR
|
6.3e+10
mVAR
|
64
MVAR
|
6.4e+10
mVAR
|
65
MVAR
|
6.5e+10
mVAR
|
66
MVAR
|
6.6e+10
mVAR
|
67
MVAR
|
6.7e+10
mVAR
|
68
MVAR
|
6.8e+10
mVAR
|
69
MVAR
|
6.9e+10
mVAR
|
70
MVAR
|
7e+10
mVAR
|
71
MVAR
|
7.1e+10
mVAR
|
72
MVAR
|
7.2e+10
mVAR
|
73
MVAR
|
7.3e+10
mVAR
|
74
MVAR
|
7.4e+10
mVAR
|
75
MVAR
|
7.5e+10
mVAR
|
76
MVAR
|
7.6e+10
mVAR
|
77
MVAR
|
7.7e+10
mVAR
|
78
MVAR
|
7.8e+10
mVAR
|
79
MVAR
|
7.9e+10
mVAR
|
80
MVAR
|
8e+10
mVAR
|
81
MVAR
|
8.1e+10
mVAR
|
82
MVAR
|
8.2e+10
mVAR
|
83
MVAR
|
8.3e+10
mVAR
|
84
MVAR
|
8.4e+10
mVAR
|
85
MVAR
|
8.5e+10
mVAR
|
86
MVAR
|
8.6e+10
mVAR
|
87
MVAR
|
8.7e+10
mVAR
|
88
MVAR
|
8.8e+10
mVAR
|
89
MVAR
|
8.9e+10
mVAR
|
90
MVAR
|
9e+10
mVAR
|
91
MVAR
|
9.1e+10
mVAR
|
92
MVAR
|
9.2e+10
mVAR
|
93
MVAR
|
9.3e+10
mVAR
|
94
MVAR
|
9.4e+10
mVAR
|
95
MVAR
|
9.5e+10
mVAR
|
96
MVAR
|
9.6e+10
mVAR
|
97
MVAR
|
9.7e+10
mVAR
|
98
MVAR
|
9.8e+10
mVAR
|
99
MVAR
|
9.9e+10
mVAR
|
100
MVAR
|
1e+11
mVAR
|
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