Feasible domain analysis of interprovincial transmission power in AC/DC interconnected power grids

Abstract

The relationship between power transmission and reception in AC/DC interconnected power grids is complex， with numerous constraints on grid operation and regulation. Therefore， relying solely on manual expertise to assess the adjustment of power transmission and reception plans presents significant challenges. In response to the precise requirements of market-oriented transactions for adjusting interprovincial power transmission and reception plans， a method for analyzing the feasible domain of interprovincial transmission power is proposed. Firstly， based on the operational characteristics of AC/DC interconnected power grids， the modeling of operational constraints within the feasible scheduling domain is expanded. Subsequently， a model for the feasible domain of interprovincial transmission power is constructed， and solved using the ordered vertex search method. Finally， case studies are conducted based on the actual operational scenarios of the regional power grid in the south， and the effectiveness of the feasible domain for interprovincial transmission power is validated using the computational results of the entire network scheduling and optimization model. The calculation results of the feasible domain provide insight into the limit range of interprovincial transmission power under specific transmission and reception scenarios， thereby providing a reference basis for the verification and adjustment of medium to long-term power transmission and reception plans.

Keywords

• ac/dc interconnection
• interprovincial transmission power
• feasible domain
• medium and long-term