Reactive power optimization method

Patent metadata

Field	Value
Publication number	US-10673237-B2
Application number	US-201715638648-A
Country	US
Kind code	B2
Filing date	Jun 30, 2017
Priority date	Aug 2, 2016
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

A reactive power optimization method for integrated transmission and distribution networks related to a field of operation and control technology of an electric power system is provided. The reactive power optimization method includes: establishing a reactive power optimization model for a transmission and distribution network consisting of a transmission network and a plurality of distribution networks, in which the reactive power optimization model includes an objective function and a plurality of constraints; performing a second order cone relaxation on a non-convex constraint of a plurality of distribution network constraints of the plurality of constraints; and solving the reactive power optimization model by using a generalized Benders decomposition method so as to control each generator in the transmission network and each generator in the plurality of distribution networks.

First claim

What is claimed is:

1. A reactive power optimization method, comprising:
establishing a reactive power optimization model for an integrated network consisting of a transmission network and a plurality of distribution networks based on a first active power output of a generator at each node in the transmission network acquired from a dispatch schedule of a transmission network operator, a first load at each node in the transmission network acquired from a load forecast system of the transmission network, a second active power output of a generator at each node in the plurality of distribution networks acquired from a dispatch schedule of each distribution network operator and a second load at each node in the plurality of distribution networks acquired from a load forecast system of each distribution network, wherein the reactive power optimization model comprises an objective function and a plurality of constraints, and the plurality of constraints include a plurality of transmission network constraints, a plurality of distribution network constraints and boundary constraints between the transmission network and the plurality of distribution networks, wherein, the plurality of transmission network constraints comprise first power flow constraints and first security constraints, wherein the first power flow constraints are represented as:

P
ij
t

=

V
i
t

⁢

V
j
t

⁡

(

G
ij
t

⁢
cos
⁢

⁢

θ
ij
t

+

B
ij
2

⁢
sin
⁢

⁢

θ
ij
t

)

(
2
)

Q
ij
t

=

V
i
t

⁢

V
j
t

⁡

(

G
ij
t

⁢
sin
⁢

⁢

θ
ij
t

-

B
ij
2

⁢
cos
⁢

⁢

θ
ij
t

)

(
3
)

∑

j
∈

⁢

π
⁡

(
i
)

⁢

P
ij
t

=

P
Gi
t

-

P
Di
t

(
4
)

∑

j
∈

⁢

π
⁡

(
i

Assignees

• Univ Tsinghua

Inventors

• Wu Wenchuan
• Zhang Boming
• Sun Hongbin
• Lin Chenhui
• Wang Bin
• Guo Qinglai

Classifications

• G06F17/11 Primary

  for solving equations {, e.g. nonlinear equations, general mathematical optimization problems (optimization specially adapted for a specific administrative, business or logistic context G06Q10/04)} · CPC title

• H02J3/20 Primary

  Electricity · mapped topic

• H02J3/18 Primary

  Arrangements for adjusting, eliminating or compensating reactive power in networks · CPC title

• H02J2203/20

  Electricity · mapped topic

• H02J2103/30

  Simulating, planning, modelling, reliability check or computer assisted design [CAD] of electric power networks · CPC title