Reactive power optimization method
US-2018041036-A1 · Feb 8, 2018 · US
Reactive power and voltage control method
US11923685B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11923685-B2 |
| Application number | US-202117347036-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 14, 2021 |
| Priority date | Jun 15, 2020 |
| Publication date | Mar 5, 2024 |
| Grant date | Mar 5, 2024 |
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Abstract
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A reactive power-voltage control method for integrated transmission and distribution networks is provided. The reactive power-voltage control method includes: establishing a reactive power-voltage control model for a power system consisting of a transmission network and a plurality of distribution networks; performing a second order cone relaxation on a non-convex constraint of the plurality of distribution network constraints to obtain the convex-relaxed reactive power-voltage control model; solving the convex-relaxed reactive power-voltage control model to acquire control variables of the transmission network and control variables of each distribution network; and controlling the transmission network based on the control variables of the transmission network and controlling each distribution network based on the control variables of the distribution network, so as to realize coordinated control of the power system.
First claim
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What is claimed is: 1. A reactive power-voltage control method, performed by a power system, comprising: establishing a reactive power-voltage control model for the power system consisting of a transmission network and a plurality of distribution networks, wherein the plurality of distribution networks are radial in nature, the reactive power-voltage control model comprises an objective function and a plurality of constraints, the objective function is established for minimizing a sum of active power outputs of generators at a slack bus in the transmission network, and the plurality of constraints include a plurality of transmission network constraints, a plurality of distribution network constraints and a plurality of transmission-distribution network boundary constraints; performing a second order cone relaxation on a non-convex constraint of the plurality of distribution network constraints to obtain a convex-relaxed reactive power-voltage control model; solving the convex-relaxed reactive power-voltage control model to acquire control variables of the transmission network and control variables of each distribution network; and performing coordinated reactive power-voltage control on the transmission network and each distribution network based on the control variables of the transmission network and the control variables of the distribution network, wherein the objective function is represented as: min ∑ i ∈ G PCC T P i G where G PCC T presents a set of indexes of the generators at the slack bus in the transmission network, and P i G represents an active power output of an i th generator in G PCC T , wherein the plurality of transmission network constraints comprise a first power flow constraint, a first power input equilibrium constraint, a first voltage limit constraint, a first power output constraint, and a first line capacity constraint; wherein the first power flow constraint is represented as: P ij = 1 τ ij 2 g ij ɛ V i 2 - 1 τ ij V i V j [ g ij ɛ cos ( θ i - θ j - ϕ ij ) + b ij ɛ sin ( θ i - θ j - ϕ ij ) ] , ∀ ij ∈ IL T P ji = g ij ɛ V j 2 - 1 τ ij V i V j [ g ij ɛ cos (
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Classifications
Simulating, planning, modelling, reliability check or computer assisted design [CAD] of electric power networks · CPC title
Grid-level management of power transmission or distribution systems, e.g. load flow analysis or active network management · CPC title
- H02J3/1814Primary
having reactive elements actively controlled by bridge converters, e.g. unified power flow controllers [UPFC] or controlled series voltage compensators · CPC title
Arrangements for monitoring electric power systems, e.g. power lines or loads; Logging · CPC title
Arrangements for handling faults or abnormalities, e.g. emergencies or contingencies · CPC title
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- What does patent US11923685B2 cover?
- A reactive power-voltage control method for integrated transmission and distribution networks is provided. The reactive power-voltage control method includes: establishing a reactive power-voltage control model for a power system consisting of a transmission network and a plurality of distribution networks; performing a second order cone relaxation on a non-convex constraint of the plurality of…
- Who is the assignee on this patent?
- Univ Tsinghua, State Grid Jibei Electric Power Company
- What technology area does this patent fall under?
- Primary CPC classification H02J3/1814. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Mar 05 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).