Power Quality Performance Module Design

The Power Quality (PQ) Performance Module analyzes power quality event and disturbance data as well as power factor measurements. It determines the potential impacts of power quality on the monitored power system and displays the results in graphical formats, with color coding to highlight problem areas. The module combines standard software features with specialized components to produce its outputs. The module can also analyzes power quality event and disturbance data as well as power factor measurements based on the hierarchy sites, which are assigned to a user group.

The following diagram shows the different elements that are part of this module:

For definitions and classifications of power quality phenomena, see power quality events and disturbances.

Components

The following applications and features are used for this module:

Diagrams
- PQ Indicator diagrams
- Standardized Equipment diagrams
Dashboards
- Power Quality Rating gadget
- Power Quality Rating Trend gadget
- Power Quality Incident Breakdown gadget
- Power Quality Incident Impact gadget
- Power Quality Incident Location gadget
- Power Quality Impact gadget
- Power Quality Impact Trend gadget
- Power Factor Impact gadget
- Power Factor Impact Trend gadget
Reports
- Power Quality Impact report
- Power Quality Analysis report
VIP

Prerequisites

This module has very specific requirements regarding system configuration and available measurements:

Most of the gadgets and reports require advanced power quality measurements taken by the monitoring devices. The power quality data is aggregated across multiple devices and depends on data from the right device types in the right monitoring locations, see Device Selection for Power Quality Performance monitoring for more information.
The Standardized Equipment diagrams are designed for very specific equipment types. See the Standardized Equipment Diagrams device list for details on compatible device types.
For the Impact gadgets and report, process impact alarms are required. These alarms might require measurements from third party equipment, which might have to be brought into the system.
For the Impact gadgets and report, billing rates must be defined to convert the measured values into cost data.

The following diagrams show the power quality inputs that are required for the different diagrams, gadgets, and reports:

Indicator diagrams

Rating gadgets

Incident gadgets

PQ Impact gadgets and report

PF Impact gadgets

PQ Analysis report

See Required measurements for Power Quality Performance monitoring for more information.

Design Considerations

The power quality information provided by this module is only as good as the data monitored by the devices. To get the full value, use the device types recommended for the different monitoring locations.

Use the Advanced Systems hardware and SQL Server database servers (not Express) for systems with the PQ Performance Module.

Time synchronization of the devices and the software is very important for this module. The standard time synchronization methods for devices in the software are sufficient. High accuracy time synchronization, such as IRIG-B, can be used, but is not required.

Review the configuration steps for this module to identify any unexpected requirements or dependencies.

If the devices that are used for power quality performance monitoring do not support all the required power quality measurements, then the information that is based on these measurements is not displayed in the gadgets, diagrams, and reports. However, other power quality information, that is based on available measurements might still be displayed. In this case, analyze which module outputs are affected and manage the user expectations accordingly.