PVET® is an advanced performance analysis service that assures a real time and comprehensive audit of large PV plants portfolios. PVET® is based on a Big Data system aimed at optimizing the long-term production and O&M costs of PV plants to maximize their economic return. Its main advantage are low uncertainty procedures for an intelligent detection, diagnosis and prediction of failures, what allows predictive maintenance to be implemented, as well as accurate energy forecasting to comply with energy market requirements.
“Low uncertainty procedures for detection, diagnosis and prediction of any performance failure”
The assessments are not limited to individual plants, but they consider cross-analyses through entire portfolios, achieving higher levels of optimization. This approach allows our clients to have a greater strategic vision of the assets and to be able to manage their operation in a more precise way.
PVET® is delivered through an intuitive, simple and convenient front-end that incorporates additional functionalities to the system, giving it a great ﬂexibility.
Cross-platform integrated at web, app and control centr levels, which allows supervising large PV plant portfolios from any place and at any time.
FUNCTIONALITIES: DATA ADQUISITION
PVET® integrates the SCADA dataand synchronizes them real time on cloud together with other additional data sources:
I-V curve campaigns with the E-1000 tracer.
DATA COHERENCE VERIFICATION
Automatic real time access to the client’s databases.
Detection of communication failures and lack of data. Management of the gaps in the data series and separation between communication, registration and operation failures.
Filtering of anomalous values. Management of data with values outside the usual operation ranges together with validation of the data source by means of value coherence algorithms.
Digital recalibration of the measurement sensors.
1. KEY PERFORMANCE INDICATORS
Calculation of the main PV plant KPIs: productivity, PR, PRSTC, PI, uptime contractual and energy-based availabilities, expected yield, losses breakdown...
Calculation of the main equipment KPIs: efficiency, operating voltage response, temperature derating, MPP tracking accuracy...
Calculation of the main O&M KPIs: acknowledge, intervention, response and resolution times, spare parts levels...
Monitoring of the economic evolution of the project and comparison with initial expectations.
Comparison with historical evolution according to weather conditions.
Calculation of long-term component degradation, which is one of the main reliability and life-time indices.
Study of the quality of the AC signal: reactive component, power factor, current and voltage imbalances, response to the grid constrictions.
Comparison of operating conditions measurement sensors.
Calculation of soiling losses.
2. FAILURES ANALYSIS
Fault detection. Low uncertainty procedures for the detection of anomalies. Our advanced algorithms allow detecting failures a ecting a string in only 2% of its power generation capacity (For example, due to a shorted diode).
Advanced fault diagnosis based on ‘big data’ and ‘machine learning’ techniques. For example: shorted diodes, low STC power, tracking errors, MPPtracking defects, imbalances between phases, anomalous temperatures, PID, LID, open series, inverter stops, grid limitations, low performance, soiling, hot spots...
Inclusion and management of native alarms as a reinforcement to the diagnosis of anomalies.
Development of spatial and temporal analysis methods for the improvement of false alarms in detection, especially on days with meteorological variability.
Expert system with cross-plant analyses, which allows managing O&M portfolios in a more precise way, anticipating degradation failures and identifying the best-performing equipment.
3. PRODUCTION ESTIMATION
Calculation of the losses breakdown: temperature, low irradiance, inverters, transformation, soiling, shading, dispersion, wiring, power factor, grid restrictions...
Estimation of production, with a precision better than 2% from the operating conditions records.
Algorithms for production prediction at 24 hours horizon, to satisfy the requirements of the generation markets, based on satellite meteorological predictions. This way, installations will be able to minimize production deviations when attending to the energy sales markets, minimizing the risk and achieving the maximum economic return.
Calculation of losses due to grid curtailments.
4. PREVENTIVE AND PREDICTIVE ANALYSIS
Analysis of degradation and estimated life time of equipment that allows anticipating the maintenance work.
Planning of cleaning campaigns to maximize production and reduce cleaning costs.
Forecast of failures due to fatigue or wear and solution planning.
Cross-analysis between PV plants and devices.
5. ASSET PORTFOLIO ANALYSIS
Comparison of plant operation.
Analysis of technical and economic e ciency of O&M tasks.
Analysis of technical and economic e ciency of equipment manufacturers and distributors.
The PVET® is delivered through an on-line platform that allows the continuous monitoring of the PV assets by the client, showing all the functionalities of the PVET® service:
1. MULTI-PLATFORM VISUALIZATION:
Web platform as the main service tool.
Control Centre mode for a continuous visualization of the whole operating assets.
2. USER MANAGEMENT:
Different types of users.
Control of user’s permissions and information access.
User management by group of plants.
3. GENERATION AND MANAGEMENT OF REPORTS:
Daily, weekly, monthly, quarterly and annual reports with the most relevant information.
Reports adapted to types of users.
Periodical report libraries and other reports associated to the plants.
Automatic mail reporting.
4. NOTIFICATION SYSTEM BY EMAIL AND APP.
5. INCIDENCES AND EVENTS SYSTEM:
Calendars to manage incidences and events.
Incident management by text and picture tickets.
Planning of preventive actions and measurement campaigns.
Download tool. Possibility of downloading any PVET system information in a simple and intuitive way.
PVET® service adds a continuous audit and advice by our expert engineers’ team:
Personal attention to the client during his daily operation.
Analysis and performance reports of speciﬁc failures.
Customized development to meet speciﬁc customer needs.
Advice on improvement actions in the plant monitoring system.
Recommendation of in-ﬁeld actions for analyzing and solving speciﬁc problems.