BESS Energy Offset Control for Standby Parasitic Losses
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Solution Overview
Problem
Battery energy storage systems (BESS) in renewable energy facilities face inefficiencies due to parasitic losses when in standby mode, leading to insufficient power for equipment, necessitating energy from the grid, which may not be available or restricted, causing equipment downtime.
Innovation Solution
An energy offset system utilizing a processor to control additional renewable energy sources and a secondary BESS to supply power to devices within the facility, bypassing the primary BESS during standby mode, ensuring continuous operation by redirecting energy from renewable sources or the grid as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the BESS operates in standby mode to remain operational, then the BESS can provide energy to equipment within the facility, but parasitic losses cause energy depletion and insufficient power for equipment
Solution Approach 1:
A controller acts as an intermediary between the BESS, renewable energy sources, and equipment. The controller monitors energy levels and automatically switches between the BESS and renewable energy sources (solar panels, wind turbines) to power equipment, preventing energy depletion from parasitic losses while ensuring continuous operation.
Solution Approach 2:
The system uses renewable energy sources (solar panels, wind turbines) within the facility to self-offset the parasitic losses incurred by the BESS in standby mode. The controller directs renewable energy to compensate for losses, making the system self-sufficient and eliminating the need for external grid energy.
2Reliability
If energy is requested from the energy grid to overcome losses, then equipment can be sufficiently powered, but energy availability is restricted and grid stress increases
Solution Approach 1:
The controller serves as an intermediary that manages energy flow between multiple sources (BESS, renewable energy sources, grid) and equipment. It prioritizes renewable energy sources and BESS storage, only accessing the grid when necessary, thereby reducing grid stress and adapting to energy availability constraints.
Solution Approach 2:
The system incorporates multiple energy sources (BESS, solar panels, wind turbines, grid) that can interchangeably serve the equipment. This multi-functional energy supply system ensures equipment power sufficiency while adapting to the availability and restrictions of each energy source.
3Ease of operation
If the BESS is used to power equipment within the facility, then equipment operation is enabled, but natural losses result in insufficient power during standby mode
Solution Approach 1:
The controller acts as an intermediary that monitors the BESS energy levels and equipment power requirements. When natural losses cause the BESS to deplete energy during standby mode, the controller automatically switches to renewable energy sources or the grid to maintain equipment operation, ensuring ease of operation while compensating for energy losses.
Solution Approach 2:
The system converts the harmful effect of parasitic losses into a beneficial trigger for switching to renewable energy sources. The energy depletion caused by natural losses signals the controller to activate renewable energy sources, which then benefit the system by providing free, sustainable energy to offset future losses.
Data Source
AI summary
A method may include measuring, by a processor from a load energy meter, energy provided to an energy grid or from the energy grid or a renewable energy source (RES) to a renewable energy power plant; determining, by the processor based on the measuring, a battery energy storage system is not providing enough energy to satisfy energy requirements of a device operating in the renewable energy power plant; identifying, by the processor based on the measuring, an amount of energy that is needed to satisfy the energy requirements of the device in combination with energy provided by a battery energy storage system to the device; and directing, by the processor, the identified amount of energy from the RES to the device.