Active power scheduling method for power distribution network-level optical storage cluster and power distribution network measurement and control device

Abstract

The invention discloses an active power scheduling method for a power distribution network-level optical storage cluster. The optical storage cluster includes two or more of a group consisting of a photovoltaic power station, an energy storage device, a household optical storage device and a household uncontrollable photovoltaic device. The method includes the step of scheduling active power of each device in the optical storage cluster through an active power scheduling value delivered by a power distribution network. Moreover, the invention also discloses a power distribution network monitoring and control device adopting the method. According to the active power scheduling method for the power distribution network-level optical storage cluster, direct scheduling control is performed ondistributed devices such as photovoltaic and energy storage devices, the barrier of integrated dispatching of a photovoltaic power plant and an energy storage device in a traditional dispatching modeis broke through, and the load forecasting link is processed by a power grid scheduling center, so that the scheduling operation of the active power is more accurate and more reliable.

Description

technical field [0001] The present invention relates to the field of distribution network technology, in particular to a method for dispatching active power of a distribution network-level optical storage cluster and a distribution network measurement and control device. Background technique [0002] With the vigorous development of smart grid and renewable energy power generation technology, the application of photovoltaic power generation in power system is increasing day by day. Photovoltaic power generation devices mainly include photovoltaic power stations, solar storage power stations, household solar storage devices, and household photovoltaic devices. Photovoltaic power generation technology has the characteristics of randomness and intermittency. Due to the limited capacity of the power grid to absorb photovoltaic active power, the problem of light abandonment is prone to occur. Therefore, most photovoltaic devices are equipped with energy storage devices at the sam...

AI Technical Summary

Problems solved by technology

However, household photovoltaic installations currently adopted on a large scale do not accept power grid dispatching, resulting in serious light abandonment and a decline in energy utilization

The unscheduled optical storage device feeds the random and intermittent reverse power flow into the power grid, which makes the voltage limit at the end of the distribution network prominent, greatly affects the stability of the power grid, and reduces the accuracy of power scheduling by the upper power grid

[0004] The existing technology does not fully consider the deviation caused by the large number of grid-connected clusters of household low-power photovoltaic devices to the active power dispatching of the grid; the combination of photovoltaic power stations and energy storage devices as a whole to output external power makes the grid dispatching center not capable of both. Ability to schedule devices individually

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