DATA ANALYTICS

Distribution Transformer Management System (DTMS)

Background

• Problems with using distribution transformers that are not suitable for the amount of electricity used in the area, such as Overload, Underutilization
• Issues in risk assessment and service life of distribution transformers including maintenance plan
• The push from the private sector to bring the TLM system into use
• The trend of increasing EVs and solar rooftops from government policy support

Timeline for the Installation and Commissioning
of 565 DTM Units During 2022–2025

DTMS Platform

Distribution Transformer Monitoring : DTM

A device that monitors and measures key parameters of distribution transformers.

Communication

Responsible for transferring data from DTM devices to the DTMS Platform.

DTMS Platform

A central hub for connecting transformer monitoring devices, operating on a cloud computing platform.

 

Web Application

Displayed through a dashboard web application, showing real-time electrical energy values and transformer temperatures in the distribution system, along with analysis and summary reports of transformer usage.

Features of the DTMS Dashboard

• Displays the locations of distribution transformers equipped with DTM devices
• Provides alerts for abnormal conditions in distribution transformer power supply, such as power outages, overvoltage, and undervoltage

• Graphical display of measurement values over time, including Apparent Power (kVA), Active Power (kW), Voltage, Load Current, Temperature, and Energy Consumption (kWh), with historical data access
• Alerts for improper load distribution on distribution transformers, such as Overloading and Current Unbalance

• Heat map showing the load distribution of transformers over specific time intervals, displaying the loading performance as a percentage of rated capacity per phase

• Display of real-time measurement values of power distribution from distribution transformers

• Display of real-time measurement values of power distribution from distribution transformers

Distribution Transformer Monitoring Analysis Dashboard (DTMA)

Features of the DTMA Dashboard

• Summarize the overall power distribution of all transformers in the distribution system that are equipped with DTM in a simple format. Users can filter by area, transformer, and time period of interest

• Rank the risk of transformers based on load distribution to facilitate planning for transformer improvements and repairs

• Display analysis of load distribution, load quality, and the proportion of time transformers provide inadequate load. The analysis is shown both in total and per-phase.

Transformer Power Optimizer (TPO)

Pilot Project in Pattaya City, Chonburi Province

This system was developed to address power quality issues in the low-voltage distribution network. The core functionality of the Transformer Power Optimizer utilizes power electronics technology to mitigate current imbalance problems occurring at distribution transformers.

Main Function

• Three-phase load imbalance compensation
• Reactive power compensation
• Filter harmonics
• Stabilize the receiving terminal voltage
• Suppress voltage fluctuation and flicker

Integrated TPO with modular design and improved power quality

The TPO, built on state-of-the-art technology, has the latest high efficiency bidirectional converter technology, ensure efficiency and a long lifetime of the imbalance solution. PQTPO has the working modes such as imbalance priority, imbalance only, reactive priority, reactive only, harmonic priority, harmonic only.

Example graph from DTMS with TPO in operation