Solar peak and valley power regulating system

Abstract

The invention provides a solar peak and valley power regulating system which is applied to development and utilization of renewable energy sources. The solar peak and valley power regulating system comprises a solar photovoltaic grid-connected generation system, a multi-way inverter, an energy storage system and unloading equipment. By detecting whether the terminal voltage of a public supply network is higher or lower, the excess energy on the public supply network can be used for charging the energy storage system, or the solar photovoltaic grid-connected generation system is used for supplying power to the public supply network. When the generation power of the solar photovoltaic grid-connected generation system is greater than the required power of the public supply network, the excess energy can be stored in the energy storage equipment or can be unloaded; and when the generation power of the solar photovoltaic grid-connected generation system is less than the required power of the public supply network, the energy in the energy storage equipment is used as a supplement. In the drawing, part (1) is the solar photovoltaic grid-connected generation system, part (2) is the multi-way inverter, part (3) is the energy storage equipment, part (4) is the public supply network, and part (5) is the unloading equipment.

Description

Technical field [0001] The invention is applied to the development and utilization of renewable energy. Background technique [0002] With the continuous development of social economy, the proportion of electricity consumption in different regions or at different times has changed greatly, which is reflected in the electricity load curve, which is manifested by the gradual increase of the peak-to-valley difference of the power grid. The grid power supply gap is caused by the limitation of the transmission capacity of the grid and the power grid; when the power consumption is low, the power quality and the grid stability level are reduced due to insufficient load and reactive power compensation. [0003] At present, the main measures to solve the problem of power grid peak regulation include limiting the power consumption during the peak period of electricity consumption through double-rate electricity prices and power rationing, and encouraging users to use electricity durin...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of social economy, the proportion of electricity consumption in different regions or at different times has changed greatly, which is reflected in the electricity load curve, which is manifested by the gradual increase of the peak-to-valley difference of the power grid. The grid power supply gap is caused by the limitation of grid transmission capacity; in the low power consumption period, the power quality and grid stability level decline due to insufficient load and reactive power compensation

[0003] At present, the main measures to solve the problem of power grid peak regulation include limiting the power consumption during the peak period of electricity consumption through double-rate electricity prices and power rationing, and encouraging users to use electricity during low-load periods of the power grid. These measures have limited peak-shaving capabilities, and at the same time It has an impact on the normal production and living order, and cannot fundamentally solve the problem of power grid imbalance

Images