Dispatching method for overcoming current unbalance of wind power grid-connected system
A technology of system power flow and scheduling method, applied in the field of wind power, can solve the problem of unbalanced power flow of wind power grid-connected system
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[0064] Taking the improved New England 10-machine 39-node test system as an example, the method of the present invention is used for optimal scheduling. Node 31 is a balance node. The wind farms are respectively connected to nodes 32, 33 and 35, and the installed capacity is 5.0p.u. The parameters of the 10 conventional units are shown in Table 1. Install the same type of ESS in 3 wind farms, with a capacity of 5.0p.u. The maximum charging and discharging power is 1.5p.u.h -1 and 3.0p.u.h -1 . ESS
[0065] The comprehensive charge and discharge efficiency is 95%.
[0066] Table 1 Conventional Unit Parameters
[0067] unit
30
31
32
33
34
35
36
37
38
39
Active upper limit / p.u.
3
5
4
3
6
5
3
5
5
6
Active lower limit / p.u.
0.9
1.5
1.2
0.9
1.8
1.5
0.9
1.5
1.5
1.8
Upper limit of climbing rate / p.u.·h -1
0.6
0.6
0.6 ...
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