Power Factor Control

Hino Systech Vietnam implements point-by-point power factor measurement and monitoring systems, providing continuous data to assess current operational status and determine optimal corrective solutions.

Challenges facing your business

  • Financial Obligations Related to Reactive Power

    Under current regulations on reactive power purchasing, electricity consumers maintaining a power factor lower than the required threshold must pay reactive power charges in addition to standard active energy costs. This cost arises in each billing cycle and is frequently unmonitored as a distinct item within factory cost management.

  • Power Factor Is Only Known at the Main Supply Level

    Power factor is typically recorded only at the main connection point via monthly utility bills. With data restricted to this level, factories cannot identify which specific area or load group causes power factor degradation, nor can they pinpoint operational timeframes during the day when drops occur. Evaluating performance after installing or servicing compensation equipment also lacks the necessary baseline data.

  • Degradation of Compensation Efficiency Goes Unnoticed

    Capacitor banks lose capacity over time, switching contacts deteriorate, controllers operate on incorrect configurations, or compensation capacity no longer aligns with changes in factory load structure. These issues develop gradually without clear symptoms during daily operation. Without continuous monitoring, businesses only become aware through utility bills after costs have accumulated over multiple billing cycles.

Advanced Technology Solutions from Hino Systech

Our approach

  • 1

    Measuring Point Placement at Distribution Levels

    The metering system is deployed hierarchically across distribution levels: the main connection point, regional distribution panels, and high-power load groups. Power factor parameters are recorded along with active power, reactive power, current, and voltage at each point, establishing a solid foundation for section-by-section analysis rather than relying solely on total main-level values.

  • 2

    Time-Series and Regional Trend Monitoring

    Data is transmitted to the monitoring platform to track real-time and historical power factor trends, enabling cross-comparison between operational areas and timeframes. The system issues automated alerts when values at any measuring point fall below pre-configured thresholds, allowing engineering teams to inspect corresponding compensation equipment before penalty fees appear on utility bills.

  • 3

    Data-Driven Foundation for Compensation Planning

    Collected data serves as a precise baseline for determining required compensation capacity and placement, evaluating existing compensation equipment status, and verifying post-implementation performance. Specific compensation plans are determined by factory management or technical specialists based on this data, alongside load characteristics and system technical conditions.

Power Factor Control

New Operating System

Hino Systech Data Collection & Control Architecture

Hino Systech system solution details

  • Japanese Technological Standards

    Hino Systech Vietnam is a 100% Japanese-owned enterprise belonging to the Hino Systech Group (established in Japan in 1950), operating in Vietnam for over 10 years with a team of more than 20 Japan-trained engineers. For power factor metrics, installation errors in current transformers (CTs), incorrect phase sequencing, or improper CT ratio configurations directly cause measurement inaccuracies. Installation and point-by-point testing prior to handover are strictly conducted following standardized corporate procedures.

  • Single-Source Metering and Monitoring Architecture

    Metering devices, data acquisition cabinets, transmission systems, and monitoring software are synchronously designed and deployed by Hino. Power factor values displayed on the system can be traced back directly to their specific measurement point and configuration, facilitating verification whenever data discrepancies arise. For facilities with pre-existing metering infrastructure, the scope of work can be flexibly tailored to integrating and auditing configurations of existing measurement points.

  • Cost Control and Power Quality Optimization

    Point-by-point power factor monitoring allows factories to pinpoint the root causes of reactive power charges and verify effectiveness after each corrective measure. Maintaining power factor at optimal levels also reduces current flow across the distribution system, thereby lowering line losses and reducing load on existing transformers and cabling infrastructure.

Get a Power-Quality Survey & Switchboard Design Quote

Optimize your plant's energy costs today with a smart power-factor correction system. Hino Systech's expert engineers will run an on-site measurement survey and propose the optimal technical plan — completely free.

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