Power Plant Controller + SCADA | PPC
Reivax’s Power Plant Controller (PPC) da REIVAX offers a unique environment for the coordinated control and operation of assets involved in renewable energy generation and storage, such as: capacitors/inductors and transformers.
The PPC is responsible for ensuring compliance with the grid connection criteria for the power plant, and its presence is mandatory in centralized renewable power plants. Optionally, it guarantees an appropriate voltage band for local loads within the plant, supplied by the power plant itself at low and medium voltage levels.
SCADA | SCX
A Supervisory Control and Data Aquisition (SCADA) system encompasses hardware and software that monitor and control power plant equipment. SCADA collects and processes real-time operational data, interacts directly with process equipment, stores values and events locally, and enables the transmission of this data to high-level systems.
SCADA systems are used in a wide range of applications; in Reivax’s case, they are applied to the control and supervision of the power generation process.
PPC HYBRID
The PPC HYBRID coordinates different sources of generation and storage to ensure joint operation of the equipment. To increase energy production, it is possible to combine different technologies within the same cluster, taking advantage of the highest energy potential depending on the available resources at a given moment. Furthermore, it is possible to make even existing plants with one technology operational hybrid. The objective of this association is generally to increase the capacity factor of the generating substation and avoid the expansion of the transmission power margin.
Features
COMPLEMENTARITY OF POWER SOURCES
An example of hybridization potential can be seen in the image alongside, where for a given location we have the generation profile of two distinct sources as a function of the time of day.
It is observed that, on average, the peak generation of each source occurs at different times for each type of source, around 12:00 for solar and between 00:00 and 06:00 for wind.
Therefore, it is possible to utilize the same substation for the outflow of the combination of these sources.
POWER LIMITATION
In another case, we have a plant that originally only had wind generation and was expanded with the installation of a solar plant.
An increase in the daily energy generation at the substation can be observed, without altering the contracted demand of the plant.
In the case of high simultaneous generation from both sources, the PPC acts to limit the plant’s demand to the contracted value.
GENERATION FLOW OVERLOAD RELIEF
In certain locations, the power margin limitation of the grid leads to wasted energy resources.
Intelligent Solution:The PPC commands the storage of excess energy in batteries, preventing loss
Strategic Use:The stored energy is injected into the grid when there is no more overload or during more advantageous times.
Características Técnicas
INTERFACE DE COMUNICAÇÃO
Ethernet
Fibra óptica monomodo ou multimodo
RS 485
PROTOCOLO
INDUSTRIAIS
Modbus TCP, Modbus RTU, IEC 60870-5-101, IEC 60870-5-104, IEC 61850, DNP3, OPC DA, OPC UA, Profibus DP, Ethernet IP
REDE
VLAN (IEEE 802.1Q), QoS (IEEE 802.1D), RSTP (IEEE 802.1w) e MRP
PAINEL DE CONTROLE
ALIMENTAÇÃO
125 Vcc / 100-240 Vca (opcional)
UPS
24 Vcc, 5A 7,2 Ah (opcional)
GRAU PROTEÇÃO
IP54
Energy Sources
Solar
The regularity of its generation is simultaneously its greatest virtue and its greatest limitation. Supplementing generation with batteries is a commonly made association aimed at increasing the number of hours of generation.
It is also frequently added to wind generation to enhance the capacity factor of the combined system, without the need to expand the substation’s capacity.
Wind
This renewable source has the advantage of providing energy for 24 hours; however, it is difficult to predict its generation. Wind plants depend on winds with sufficient speed to produce energy, making the careful selection of tower installation sites necessary.
One strategy that has been adopted is the association of wind plants with solar plants, as it is possible to harness good irradiation potential in almost any territory.
Hydro
To better utilize the reservoir area and increase generation, hydropower plants can “hybridize“ with floating photovoltaic modules. This association is referred to as a hydrosolar plant.
Solar panels benefit from the availability of installation area already belonging to the plant and from the natural cooling provided by the proximity to the lake water, allowing for increased panel efficiency.
Thermal
Thermal power plants have the advantage of being less influenced by environmental conditions for their operation; however, they have a long startup time and face difficulties in generating power away from nominal conditions.
Thus, its typical use is as a baseload, ensuring a constant minimum level of generation. Its supplementation with solar photovoltaic generation aims to conserve fuel while still meeting the customer’s energy needs.
Diesel
Quick startup, a wide power control range, and 24-hour availability make this source quite versatile. A negative aspect is the emission of pollutant gases due to diesel combustion.
The combination with solar power balances fuel economy on one hand and flexibility and generation availability on the other.
BESS
The availability of storage provides great flexibility for the plant that has it. It can operate during times when the alternative generation source has low efficiency, such as a diesel generator at low power.
It can also complement generation during peak demand periods, a situation where it does not justify oversizing the generator for use only in this extreme case.