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Jun 13,2026
A factory operates on a three-phase, four-wire power supply system. Recently, due to a break in the external neutral wire and the absence of protective circuits such as zero-sequence current protection in the distribution system, multiple PLCs and instruments were damaged, resulting in production and financial losses. Below, we discuss how to diagnose and prevent neutral wire breakage...
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Jun 15,2026
Analysis of the reasons for the decrease in power factor on the power supply side after the AHF only performs harmonic filtering: I. Increased total apparent power naturally leads to a decrease in the overall power factor. Power factor λ = P/S. Active power P is determined only by the fundamental active power; harmonics do not contribute. After filtering, the fundamental reactive power remains unc...
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Jun 17,2026
In high- and low-voltage power distribution systems, "capacitor compensation" is an indispensable technical term. Whether in factories, commercial buildings, or data centers, the capacitor compensation units housed within low-voltage cabinets act like "invisible electricians," quietly enhancing the operational efficiency of the power system. To understand capacitive compensation, one must first gr...
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Jun 18,2026
Choose the right one, not the most expensive one. This principle also applies to reactive power compensation. In the power industry's reactive power compensation process, the selection of high-voltage reactive power compensation equipment has always been crucial. Today, we'll discuss the applicable scope of high-voltage reactive power compensation equipment. In the context of reactive power compen...
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Jun 23,2026
Understanding Four-Quadrant Reactive Power Compensation Controller The four-quadrant reactive power compensation controller solves this pain point with full-range PQ vector detection. It accurately distinguishes four operating modes: grid supply with inductive loads, grid supply with capacitive loads, on-site power generation with inductive reactive power, and grid feedback with capacitive reactiv...
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