Which is a key consequence of failing to manage reactive power effectively?

Managing reactive power effectively is vital for the stability and reliability of electrical systems. Reactive power plays a critical role in maintaining voltage levels, which is essential for the proper functioning of electrical equipment and to ensure efficient power delivery. When reactive power is not managed correctly, it can lead to voltage instability.

Voltage instability occurs when there is an insufficient reactive power supply to support the voltage throughout the network. If voltage levels drop too low, it can result in equipment malfunction, inefficient operation, and ultimately, system failures. In severe cases, this can prompt cascading failures that lead to blackouts. Blackouts are significant disruptions in electricity supply, representing a serious operational issue for utility providers and a major inconvenience for consumers.

Thus, failing to manage reactive power effectively can directly contribute to voltage instability and increased risk of system blackouts, making it a key consequence of poor reactive power management.