As solar adoption surges globally, a critical question emerges: how do we protect batteries from overcharging when sunlight exceeds demand? With 68% of off-grid solar failures traced to improper charge management (2023 IRENA report), this issue costs the industry $2.3 billion annually. What makes solar overcharging particularly insidious is its cumulative damage – a single thermal runaway event can reduce battery lifespan by 40%.
Imagine a 500kV transmission line suddenly developing a ground fault during peak demand. Neutral-grounding resistors (NGRs) become the unsung heroes here, but how exactly do they prevent catastrophic system failures? Recent data from CIGRE shows 43% of unplanned outages originate from improper grounding practices, making this question more urgent than ever.
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