PQE Power System Sdn Bhd

𝐏𝐨𝐰𝐞𝐫 𝐐𝐮𝐚𝐥𝐢𝐭𝐲 𝐂𝐡𝐚𝐥𝐥𝐞𝐧𝐠𝐞𝐬 𝐢𝐧 𝐭𝐡𝐞 𝐌𝐨𝐝𝐞𝐫𝐧 𝐄𝐥𝐞𝐜𝐭𝐫𝐢𝐜𝐚𝐥 𝐋𝐚𝐧𝐝𝐬𝐜𝐚𝐩𝐞

A productive session with electrical engineering consultants, discussing how modern loads are reshaping power system behaviour—and why traditional design approaches are no longer sufficient.

Key discussions included:
* Emerging power quality challenges in today’s systems
* The importance of accurate measurement & monitoring
* Limitations of conventional capacitor banks
* Practical approaches using modern PQ solutions

Good engagement, practical questions, and valuable exchange of real project experiences.

We at PQE Power System Sdn Bhd thank all participants for the active discussion.

𝐌𝐚𝐬𝐭𝐞𝐫𝐢𝐧𝐠 𝐏𝐨𝐰𝐞𝐫 𝐐𝐮𝐚𝐥𝐢𝐭𝐲 𝐢𝐧 𝐒𝐨𝐥𝐚𝐫 𝐏𝐕 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 — 2𝐧𝐝 𝐒𝐞𝐬𝐬𝐢𝐨𝐧

Following the strong response from our earlier session, we were pleased to host another round of focused discussions with Solar PV stakeholders.

As Solar PV and BESS adoption accelerates, power quality is becoming a key factor in ensuring stable, efficient, and reliable system performance.

This session centred on practical insights into measurement, performance optimisation, and reducing energy losses — reinforcing the importance of going beyond installation.

Thank you to all participants for your continued engagement.

Driving better solar performance takes more than generation — it takes collaboration.

Installing a Solar PV system is only the first step.

“What challenges are you facing after PV installation?”

- Frequent tripping and system instability
- Difficulty meeting grid and compliance requirements
- Integration challenges with existing electrical systems

As Solar PV adoption continues to grow, the focus must go beyond installation. Achieving stable operation, compliance, and optimal performance requires deeper visibility and a clearer understanding of how solar interacts with the overall electrical system.

This is a critical step towards delivering more reliable, efficient, and high-performance solar solutions.

“𝐌𝐨𝐝𝐞𝐫𝐧 𝐞𝐥𝐞𝐜𝐭𝐫𝐢𝐜𝐚𝐥 𝐬𝐲𝐬𝐭𝐞𝐦𝐬 𝐚𝐫𝐞 𝐧𝐨 𝐥𝐨𝐧𝐠𝐞𝐫 𝐝𝐞𝐟𝐢𝐧𝐞𝐝 𝐛𝐲 𝐬𝐢𝐦𝐩𝐥𝐞, 𝐩𝐫𝐞𝐝𝐢𝐜𝐭𝐚𝐛𝐥𝐞 𝐥𝐨𝐚𝐝 𝐩𝐫𝐨𝐟𝐢𝐥𝐞𝐬.”

Today’s networks are shaped by non-linear loads — variable speed drives, data centres, EV chargers, and power electronics — all contributing to increasingly complex harmonic signatures across the system.

Yet, many measurement practices still stop at the 50th harmonic order, creating critical blind spot in modern operations.

Higher-order harmonics — often dismissed or simply unmeasured — can introduce:
* Additional thermal stress on transformers and cables
* Interference with sensitive electronics and control systems
* Reduced effectiveness of conventional filtering solutions

When these components remain outside your visibility, power system behaviour becomes harder to explain and control.

What is not captured… is not analysed. And what is not analysed… is not managed..

At PQE Power System Sdn Bhd, we believe accurate data is the starting point of every reliable and suitable solution.

Extending harmonic analysis beyond conventional limits enables:
✔ Deeper understanding of true system conditions
✔ More precise mitigation strategies
✔ Improved long-term reliability and asset performance

In today’s ever-growing electrical landscape, measurement boundaries should not define system understanding.

See beyond the standard. Measure what truly matters!

Due to overwhelmingly positive response from our previous session, we’re opening a second session focused on power quality in solar PV systems. ☀️

As solar adoption grows, so do the practical challenges surrounding integration, stability, and system performance.

This session is designed for solar providers to exchange insights on how power quality considerations can support better outcomes; not just in installation, but in long-term power system's power quality and performance. ⚡

🔒 Limited seats to ensure meaningful discussion
📅 22 April 2026 | 9AM – 12PM
👉 Register here: https://forms.office.com/r/ektFexeAQ0

𝐀𝐫𝐞 𝐲𝐨𝐮𝐫 𝐩𝐫𝐨𝐭𝐞𝐜𝐭𝐢𝐨𝐧 𝐫𝐞𝐥𝐚𝐲𝐬 𝐬𝐭𝐢𝐥𝐥 𝐫𝐞𝐥𝐢𝐚𝐛𝐥𝐞—𝐨𝐫 𝐣𝐮𝐬𝐭 𝐩𝐚𝐬𝐬𝐢𝐧𝐠 𝐭𝐞𝐬𝐭𝐬?

With increasing system complexity—VFDs, solar integration, and non-linear loads—relay performance can drift without obvious signs… until a false trip or failure occurs.

⚡ 𝐌𝐮𝐥𝐭𝐢-𝐏𝐨𝐢𝐧𝐭 𝐓𝐞𝐬𝐭𝐢𝐧𝐠 𝐌𝐚𝐭𝐭𝐞𝐫𝐬
Protection curves are not a single point.
Testing across multiple injection points ensures your relay responds correctly across real operating conditions—not just one setting.

⏱ 𝐓𝐫𝐢𝐩𝐩𝐢𝐧𝐠 𝐓𝐢𝐦𝐞 𝐈𝐬 𝐂𝐫𝐢𝐭𝐢𝐜𝐚𝐥
A relay that trips is not enough.
It must trip within the correct time window—too fast or too slow can both lead to coordination issues, equipment damage, or unnecessary shutdowns.

⚠️ Today’s risk isn’t just failure—it’s misoperation.
Incorrect settings, ageing components, and system changes can silently compromise protection.

𝐏𝐫𝐞𝐜𝐢𝐬𝐢𝐨𝐧 𝐢𝐬𝐧’𝐭 𝐨𝐩𝐭𝐢𝐨𝐧𝐚𝐥—𝐢𝐭’𝐬 𝐜𝐫𝐢𝐭𝐢𝐜𝐚𝐥 𝐭𝐨 𝐫𝐞𝐥𝐢𝐚𝐛𝐥𝐞 𝐨𝐩𝐞𝐫𝐚𝐭𝐢𝐨𝐧.

💬 Not sure if your relay settings still match your current system? Let’s talk.

For more updates and newsletters, visit our website at www.PQE.com.my

𝐂𝐨𝐧𝐯𝐞𝐧𝐭𝐢𝐨𝐧𝐚𝐥 𝐜𝐚𝐩𝐚𝐜𝐢𝐭𝐨𝐫 𝐛𝐚𝐧𝐤𝐬 𝐝𝐨𝐧’𝐭 𝐟𝐚𝐢𝐥 𝐛𝐲 𝐚𝐜𝐜𝐢𝐝𝐞𝐧𝐭—𝐭𝐡𝐞𝐲 𝐟𝐚𝐢𝐥 𝐨𝐧 𝐬𝐜𝐡𝐞𝐝𝐮𝐥𝐞.

Every switching event engages contactors, reactors, and stepped capacitor stages, generating..
- Contact arcing
- Thermal cycling
- Introduce harmonics from VFD-driven motors, EV chargers, and solar inverters
- Dielectric stress, reactor saturation, and switchgear fatigue accelerate, quietly eroding system reliability.

This is a design flaw in relation to our modern day power system demand response. Step-based capacitor banks assume loads are slow-changing and linear, but modern electrical systems are dynamic, non-linear, and digitally controlled. When your reactive power compensation depends on consumable electromechanical components, predictable failure isn’t just likely; it’s engineered into the system.

The consequences?? Voltage excursions, nuisance breaker trips, harmonic amplification, and power factor penalties increase OPEX, strains downstream equipment, and shortens the lifecycle of inverters, transformers, and switchgear.

Systems that fail “on schedule” silently degrade overall power quality while giving operators the illusion of normal operations.

Solution! Modern loads demand solid-state, real-time reactive power solutions that handle rapid load transients without mechanical bottlenecks or built-in failure points. If your capacitor bank still relies on stepped stages, contactors, and reactors, it’s already obsolete in today’s dynamic power system landscape.

Harmonic measurement standards have evolved — but field practices are lagging behind. ⚡

While earlier benchmarks focused on 50th harmonic orders, decades have passed and modern international expectations now extend to 100th as per UK Engineering Recommendation G5/5.

Yet many marketed power measurement tools remain configured to outdated standards..

The question is: are we comfortable making decisions based on outdated visibility & measurement tools?

A focused session on Mastering Power Quality in Solar PV Systems.

As solar PV systems and related technologies such as BESS' adoption accelerates, power quality increasingly determines how efficiently energy is delivered, utilised, and sustained across the end users' power systems. Solar PV systems' power generation is innovative— but like all real-world systems, performance depends on how well limitations are understood and managed.

This session brought solar PV system stakeholders together to explore practical measurement insights, performance optimisation, and collaborative approaches to reducing energy losses.

Maximising solar efficiency works best when industry partners work together.

Thank you again to all participants for your valuable engagement and contributions!