Simulation method for operation time sequence of active power distribution network

Abstract

The invention discloses a simulation method for an operation time sequence of an active power distribution network, and the method comprises the steps: performing medium- and long-term load predictionof the active power distribution network; establishing a growth probability model of the access capacity of a distributed generation device; respectively establishing tie sequence output power modelsof photovoltaic power generation and wind turbine power generation in the active power distribution network; obtaining the charging and discharging states of an energy storage device according to themedium- and long-term load prediction of the active power distribution network and the output powers of photovoltaic power generation and wind turbine power generation; selecting an interactive operation strategy of the active power distribution network with high economic benefit, performing the simulation of the evolution operation of the active power distribution network in a process that the growth probability model of the access capacity of the distributed generation device is added to an operation scenario of the active power distribution network according to the time sequence, and generating an active power distribution network time sequence operation sample which meets the operation balance constraint and includes the growth probability. The method can be effectively used for the correlation analysis of technical paths and indicators in the subsequent active power distribution network investment planning.

Description

Technical field [0001] The invention relates to the technical field of power systems, and in particular to a time sequence simulation method for active distribution network operation. Background technique [0002] In recent years, with the rapid development of intermittent renewable energy power generation represented by wind and photovoltaics, the penetration rate of distributed generation (DG) in active distribution networks has increased, and the types and numbers of active components have increased. Active power distribution The network structure of the network is becoming more and more complicated, and the distributed characteristics of the system are becoming more prominent, which puts forward new requirements for the autonomous operation and control ductility of the system. Distributed renewable energy output has obvious randomness and volatility. A large number of scattered communication data will cause the communication of traditional centralized control methods to be sl...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the existing technology cannot effectively guide the investment planning and decision-making of the active distribution network, the present invention provides a timing simulation method for the operation of the active distribution network. Proxy operation simulation to generate time-series operation samples of active distribution network that satisfy operation balance constraints and include growth probability, which is used for correlation analysis of technical paths and indicators in active distribution network investment planning

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