New energy auxiliary battery on the transmission and distribution side

Which power supplies are insured by auxiliary services?

Actually, DC and AC power supplies of auxiliary services are insured by batteries, generator, rectifiers and inverters. In this work, we want to add another source based on renewable energies to obtain a hybrid system and reinforce the main service of transformer substations.

Which auxiliary electrical sources are required for exploitation of substations?

The exploitation of transmission or distribution network of substations requires auxiliary electrical sources with low continuous and alternative voltage. Actually, DC and AC power supplies of auxiliary services are insured by batteries, generator, rectifiers and inverters.

How do battery energy storage systems work?

Integrating renewable energy resources into electrical distribution networks necessitates using battery energy storage systems (BESSs) to manage intermittent energy generation, enhance grid reliability, and prevent reverse power flow.

What are 127V DC power supplies in a substation?

Fig. 2. 127v DC power supplies in a substation. The system resulting from the work presented in , consists of a photovoltaic generator, a storage system with either a lead-acid battery or a lithium battery, a primary source such as a generator or a wind turbine and converters to control the energy produced by the sources to power consumers.

What auxiliary power sources are needed for EHV / HV transformer station?

In addition to DC power supplies, the operation of the EHV / HV transformer station requires the availability of auxiliary low voltage AC sources, to ensure various functions (power, lighting, heating, air conditioning, pumping…). The alternative power source is provided by an MV / LV transformer called Auxiliary Services Transformer or TSA.

How does the state of charge affect a battery?

The state of charge influences a battery’s ability to provide energy or ancillary services to the grid at any given time. Round-trip eficiency, measured as a percentage, is a ratio of the energy charged to the battery to the energy discharged from the battery.