Distributed event-driven electric power economic dispatching method based on communication noise

Abstract

The invention provides a distributed event-driven electric power economic dispatching method based on communication noise, which aims at the communication noise in a renewable energy power generation system, assumes that the cost of a generator is a quadratic function, and takes the incremental rate of the cost function of each unit as a consistency variable. And a decision unit is selected to carry out containment control on the whole system according to the system power deviation. By constructing a consistency gain function, the distributed scheduling algorithm can converge, so that the influence of communication noise on the power system is effectively inhibited. Aiming at the problem that topological structures of flexible loads and power elements in a power system are changeable under plug-and-play conditions, an event-driven control mode is adopted, the system can meet the requirement of a smart power grid for plug-and-play while economic dispatching is achieved, dependence on communication is reduced, the operation cost of the power grid is reduced, and meanwhile, the benefit generated by electricity utilization is maximum, so that the economic benefit maximization of the operation of the whole power system is realized.

Description

Technical field [0001] The present invention relates to a distributed event-driven power economy scheduling method based on communication noise, belonging to the economic scheduling field of power system. Background technique [0002] Traditional power economy scheduling is the centralized scheduling, all-line load and unit information by the scheduling center, and issues a control command to protect the power grid information from infringement. However, with the continuous development of new energy, technology continues to innovate, renewable energy gradually incorporated into the grid, and the penetration rate is increasing, resulting in an increase in communication burden. In particular, there is better wind power generation and photovoltaic power generation. When transmitting, transmission and accepting communication signals are interfected with communication noise, resulting in unable to communicate, unable to make quick and correct action on system failures, in addition to ...

AI Technical Summary

Problems solved by technology

However, with the continuous development of new energy and technological innovation, renewable energy is gradually integrated into the power grid, and the penetration rate continues to increase, resulting in an increase in the communication burden

Especially well-developed wind power generation and photovoltaic power generation will be interfered by communication noise when sending, transmitting and receiving communication signals, resulting in failure to communicate normally, and unable to make fast and correct actions for system failures. Flexible load will lead to high cost of communication topology construction, and power components will change topology under "plug and play" technology, which will cause great trouble to dispatch

Therefore, in the smart grid where the network and the physical network are highly integrated in the future, the centralized economic dispatch method is no longer applicable, and a new method needs to be proposed to solve these problems

Images