What Should a Rooftop PV Monitoring Data Dictionary Define

Define what each monitoring value represents before using it to judge performance. Equipment identifiers, units, timestamps and aggregation rules should be clear to the owner and operator. Missing telemetry and zero production are different data states; record how each is displayed and investigated in the chosen monitoring system.

Concept illustration for what should a rooftop pv monitoring data dictionary define.

Concept illustration • X-SOLAR • 屋顶光伏监控数据字典应定义什么

Practical review checklist

· List the signals. Record source equipment, measurement meaning and units without relying on a dashboard label alone.

· Define time handling. Document time zone, interval, aggregation and how late or duplicate samples are treated.

· Mark data quality. Keep missing, invalid, estimated and measured values distinguishable in exported reports.

· Assign ownership. State who reviews anomalies, maintains mappings and preserves an accessible copy of the records.

When to request clarification

Request clarification before accepting a report that silently fills missing values with zero. Data quality issues need investigation before performance conclusions.

Questions buyers ask

Is a blank dashboard proof the array has stopped? No. Communication, data processing and electrical operation require separate checks.

What makes a review record useful? It identifies the actual equipment, source evidence, responsible person and unresolved conditions so a later reviewer can follow the decision.

Information to send with an enquiry

Send signal definitions, sample exports, equipment mapping and a description of known gaps or clock changes.

This is a project discussion checklist, not an installation instruction or an approval. The selected manufacturers, project engineer and local authority must confirm the applicable requirements.

Related X-SOLAR guide: Roof engineering assessment checklist

Further reading: US DOE FEMP — operate and maintain an existing PV system

屋顶光伏监控数据字典应定义什么

利用监控判断表现前，应定义每个数值代表什么。业主与运维方需要理解设备编号、单位、时间及汇总规则；遥测缺失与零发电是不同状态，应明确显示与调查方法。

实用核对清单

· 列出信号：记录来源设备、含义及单位，不仅依赖面板标签。

· 定义时间：明确时区、间隔、汇总及迟到、重复样本处理。

· 标记质量：导出报告中区分缺失、无效、估算及实测值。

· 分配责任：明确异常审阅、映射维护及记录保管人。

需要澄清的情况

报告把缺失数据静默补零时须澄清；先调查数据质量，再作性能判断。

常见问题