Dynamic Containment

National Grid has recently introduced the Dynamic Containment frequency response service to regulate frequency response ancillary services more effectively.
Similar to its predecessor, the Firm Frequency Response (FFR) scheme, Dynamic Containment is designed to manage the network of providers offering frequency balancing solutions.
These providers often utilize battery energy storage systems (BESS), commonly found on photovoltaic (PV) farms and other solar installations.
Description
Dynamic Containment is a fast-acting frequency response service designed to maintain grid stability. It quickly and precisely adjusts power output to stabilize system frequency, preventing deviations beyond the statutory ±0.5Hz limit during sudden demand or generation fluctuations.
The dynamic containment guidelines outline the technical requirements for fast frequency response, including specific metering and reporting obligations to be fulfilled and transmitted to National Grid's data concentrator.

Submitting Dynamic Containment reports Using SATEC PRO Series Meters
The meter of the PRO Series - PM335 and EM235 have been uniquely adjusted to comply and exceed the requirements for monitoring, specified in Dynamic Containment.
This includes:
- Providing frequency readings at a 4 decimal resolution
- Providing a bespoke data log for the required parameters to be sent to the data concentrator
The PRO meter is an extremely advanced analyzer, compliant with the Class S category of power quality analysis, per IEC 61000-4-30.
PRO highlights include:
- Class 0.2S accuracy
- IEC 61850 / DNP3
- Power Quality: Class A, Ed. 3
- DC Metering via Hall Effect Sensors
- Waveform Recording
- 16GB on board memory
- Dual Port Ethernet
- Up to 27 Digital and analog I/O
For further information, please visit the PRO Series product pages.
PRO Series Advanced Power Meters
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PM335 PRO
Satec PM335 PRO is used for advanced power monitoring applications of both AC and DC current. With waveform recording capabilities and 16GB of storage, it is a powerful Class A, Ed. 3.1 power-quality analyzer and event recorder.
Featuring multiple protocols (IEC 61850, DNP3 and IEC 60870-5-101/104) and dual-port ethernet, this is the ultimate solution for power monitoring, meeting and exceeding the most current requirements in utility and industrial applications.Advanced IEC61850 Multifunction AC/DC Power Meter and Power Quality Analyser
- Class 0.2S accuracy
- IEC 61850 / DNP3
- Power Quality Analyzer: Class A, Ed. 3.1
- DC Metering via Hall Effect Sensors
- Compliance with ENA EREC G99
- Waveform Recording
- 16GB on board memory
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EM235 PRO
Satec EM235 PRO is used for advanced power monitoring applications of both AC and DC current. It is a powerful IEC 61000-4-30 Class A, edition 3.1 compliant power-quality analyzer and event recorder with waveform recording capabilities.
With support for multiple protocols (including IEC 61850, DNP3, and IEC 60870-5-101/104) and dual-port Ethernet connectivity, the EM235 PRO stands as the ultimate choice for power monitoring, meeting the latest requirements in utility and industrial applications.Ultra-compact IEC61850 Multifunction AC/DC Power Meter and Power Quality Analyser
- IEC 61000-4-30 Class A, Edition 3.1
- Class 0.2S accuracy
- IEC 61850 / DNP3 / IEC 60870-5-101/104
- DC Metering via Hall Effect Sensors
- Compliance with ENA EREC G99
- Waveform Recording
- 16GB on board memory
- DIN-rail form factor
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RTR
SATEC RTR software is designed for high-speed polling and data collection from SATEC meters and other MODBUS-compatible devices.
Suitable for building cost-effective solutions based on SATEC meters and industrial embedded computers that meets demanding requirement of National Grid ESO (UK) and Frequency Control Ancillary Services (FCAS).Realtime Recorder Software
- Frequency Control and Monitoring Services
- Polling data at rates up to 10ms
- Low resource consumption
- Multi-Platform support: x86/ARM, Linux/Windows
- Command Line Interface
- Multiple Data Formats: CSV, XML, JSON, SQL DBs
- Highly customizable and tailored builds