===== Dynamic Disturbance Recording (DDR) =====
[[ddsf:public:guidebook:06_append:glossary:start| Return to Glossary ]]

**Dynamic Disturbance Recording (DDR)** involves capturing incidents that represent behaviour of the power system during dynamic events, such as low frequency oscillations, abnormal under/over frequency, voltage excursions and system’s wide transients.

DDR can be used for wide-area disturbance monitoring to analyse the system’s transient and post-transient response and predict system model [[ddsf:public:guidebook:06_append:glossary:p:performance|performance]].

Source: [[https://insulect.com/power-system-performance-monitoring/dynamic-disturbance-recording | Dynamic Disturbance Recording (DDR) ]]