Long-term investigation of unstable input, affected by electrical and network conditions

[kimchi man]

Guys, if you think it's your body acting like a capacitor, try this: play for a few days using only wireless devices (keyboard, mouse, headset). After that, don't touch your PC at all for a few days. Then, ask someone else to play on it for a couple of days — a friend, your girlfriend, your parents, anyone — and see if the issue is still there.

I've already tested this many times. Friends, family members, engineers, my parents, grandparents, my sister - many different people have used my setup. The experience is always the same regardless of who is sitting at the PC.

We've also tested different keyboards, mice, monitors, laptops, and complete PCs brought from other places. Once they're connected in my environment, they behave almost exactly like my own system. So there is no point in those tests.

I suspect the issue may be caused by high impedance in the neutral conductor.

A loose connection, oxidation, or some other factor could cause the neutral conductor's impedance to rise beyond its normal range.

In practice, neutral conductor impedance is difficult to measure with a standard multimeter. Because of that, it's possible for someone to assume the neutral is fine when, in reality, it has an impedance problem that simply wasn't detected.

[fa1kk]

Guys, if you think it's your body acting like a capacitor, try this: play for a few days using only wireless devices (keyboard, mouse, headset). After that, don't touch your PC at all for a few days. Then, ask someone else to play on it for a couple of days — a friend, your girlfriend, your parents, anyone — and see if the issue is still there.

I've already tested this many times. Friends, family members, engineers, my parents, grandparents, my sister - many different people have used my setup. The experience is always the same regardless of who is sitting at the PC.

We've also tested different keyboards, mice, monitors, laptops, and complete PCs brought from other places. Once they're connected in my environment, they behave almost exactly like my own system. So there is no point in those tests.

I suspect the issue may be caused by high impedance in the neutral conductor.

A loose connection, oxidation, or some other factor could cause the neutral conductor's impedance to rise beyond its normal range.

In practice, neutral conductor impedance is difficult to measure with a standard multimeter. Because of that, it's possible for someone to assume the neutral is fine when, in reality, it has an impedance problem that simply wasn't detected.

Has anyone had this diagnosed as a high-impedance neutral and taken action to address it? If so, what exactly was repaired? A joint? A span of conductors? The transformer neutral? Additional grounding? Or did anyone even try to measure it?

[kimchi man]

Guys, if you think it's your body acting like a capacitor, try this: play for a few days using only wireless devices (keyboard, mouse, headset). After that, don't touch your PC at all for a few days. Then, ask someone else to play on it for a couple of days — a friend, your girlfriend, your parents, anyone — and see if the issue is still there.

I've already tested this many times. Friends, family members, engineers, my parents, grandparents, my sister - many different people have used my setup. The experience is always the same regardless of who is sitting at the PC.

We've also tested different keyboards, mice, monitors, laptops, and complete PCs brought from other places. Once they're connected in my environment, they behave almost exactly like my own system. So there is no point in those tests.

I suspect the issue may be caused by high impedance in the neutral conductor.

A loose connection, oxidation, or some other factor could cause the neutral conductor's impedance to rise beyond its normal range.

In practice, neutral conductor impedance is difficult to measure with a standard multimeter. Because of that, it's possible for someone to assume the neutral is fine when, in reality, it has an impedance problem that simply wasn't detected.

Has anyone had this diagnosed as a high-impedance neutral and taken action to address it? If so, what exactly was repaired? A joint? A span of conductors? The transformer neutral? Additional grounding? Or did anyone even try to measure it?

There is a reason I started suspecting that electricity is the root cause of this issue.

I approached it by dividing the possible causes into three categories: hardware, software, and the surrounding environment. After testing them as thoroughly as I could, I concluded that neither the hardware nor the software was responsible.

By the process of elimination, I came to the conclusion that the only remaining factor capable of affecting the PC is its electrical environment.

With that in mind, I started digging through the Blur Busters forums. I found quite a few posts from people who completely resolved the issue after rewiring parts of their electrical system or repairing their electrical panel. What's interesting is that those users never returned to the forum afterward, suggesting that their problem was genuinely solved.

The people who actually managed to fix the issue all seemed to point toward electrical problems as the root cause.

This is only my personal theory, but I believe the neutral conductor always carries electrical noise and high-frequency interference. For that noise to be dissipated effectively, the impedance between the neutral and the protective earth conductor may need to be very low, allowing the unwanted noise to be safely diverted to ground.

Conversely, if that impedance becomes too high, I suspect the noise can no longer be dissipated effectively. Instead, it may disturb the computer's common reference (ground reference), leading to the kinds of problems we've been experiencing.

I've seen two people suggest that the neutral conductor was the source of the problem.

One of them repaired the main neutral busbar in the electrical panel and installed a new dedicated circuit from the panel to the room where the PC was located. In other words, they rewired that part of the electrical system.

According to them, that completely resolved the issue.

I haven't seen anyone explicitly say that they measured the neutral conductor's impedance themselves. However, I would expect that most qualified electricians have the appropriate equipment to perform those measurements.

Before hiring an electrician, you could also ask whether they have the equipment necessary to measure neutral conductor impedance.

[fa1kk]

I've already tested this many times. Friends, family members, engineers, my parents, grandparents, my sister - many different people have used my setup. The experience is always the same regardless of who is sitting at the PC.

We've also tested different keyboards, mice, monitors, laptops, and complete PCs brought from other places. Once they're connected in my environment, they behave almost exactly like my own system. So there is no point in those tests.

I suspect the issue may be caused by high impedance in the neutral conductor.

A loose connection, oxidation, or some other factor could cause the neutral conductor's impedance to rise beyond its normal range.

In practice, neutral conductor impedance is difficult to measure with a standard multimeter. Because of that, it's possible for someone to assume the neutral is fine when, in reality, it has an impedance problem that simply wasn't detected.

Has anyone had this diagnosed as a high-impedance neutral and taken action to address it? If so, what exactly was repaired? A joint? A span of conductors? The transformer neutral? Additional grounding? Or did anyone even try to measure it?

There is a reason I started suspecting that electricity is the root cause of this issue.

I approached it by dividing the possible causes into three categories: hardware, software, and the surrounding environment. After testing them as thoroughly as I could, I concluded that neither the hardware nor the software was responsible.

By the process of elimination, I came to the conclusion that the only remaining factor capable of affecting the PC is its electrical environment.

With that in mind, I started digging through the Blur Busters forums. I found quite a few posts from people who completely resolved the issue after rewiring parts of their electrical system or repairing their electrical panel. What's interesting is that those users never returned to the forum afterward, suggesting that their problem was genuinely solved.

The people who actually managed to fix the issue all seemed to point toward electrical problems as the root cause.

This is only my personal theory, but I believe the neutral conductor always carries electrical noise and high-frequency interference. For that noise to be dissipated effectively, the impedance between the neutral and the protective earth conductor may need to be very low, allowing the unwanted noise to be safely diverted to ground.

Conversely, if that impedance becomes too high, I suspect the noise can no longer be dissipated effectively. Instead, it may disturb the computer's common reference (ground reference), leading to the kinds of problems we've been experiencing.

I've seen two people suggest that the neutral conductor was the source of the problem.

One of them repaired the main neutral busbar in the electrical panel and installed a new dedicated circuit from the panel to the room where the PC was located. In other words, they rewired that part of the electrical system.

According to them, that completely resolved the issue.

I haven't seen anyone explicitly say that they measured the neutral conductor's impedance themselves. However, I would expect that most qualified electricians have the appropriate equipment to perform those measurements.

Before hiring an electrician, you could also ask whether they have the equipment necessary to measure neutral conductor impedance.

I ended up reaching almost the same conclusion two years ago. I ruled out hardware and software and RF noise. The only factor that consistently remained was the electrical environment.

I'm currently working with my power company to locate the source. So far we've confirmed that my 0.4 kV overhead line already has documented power quality issues, and they're once again logging the entire line.

PEN is one of my main suspects, but I can't honestly say it's the cause yet. At this point it's only a guess.

I'm also trying to find an independent electrical laboratory. But in those 2 years, I didn't really find anyone who had equipment or knowledge. I'll try to call 2 labs that I have found recently and see what they say.

[kimchi man]

I suspect the issue may be caused by high impedance in the neutral conductor.

A loose connection, oxidation, or some other factor could cause the neutral conductor's impedance to rise beyond its normal range.

In practice, neutral conductor impedance is difficult to measure with a standard multimeter. Because of that, it's possible for someone to assume the neutral is fine when, in reality, it has an impedance problem that simply wasn't detected.

Has anyone had this diagnosed as a high-impedance neutral and taken action to address it? If so, what exactly was repaired? A joint? A span of conductors? The transformer neutral? Additional grounding? Or did anyone even try to measure it?

There is a reason I started suspecting that electricity is the root cause of this issue.

I approached it by dividing the possible causes into three categories: hardware, software, and the surrounding environment. After testing them as thoroughly as I could, I concluded that neither the hardware nor the software was responsible.

By the process of elimination, I came to the conclusion that the only remaining factor capable of affecting the PC is its electrical environment.

With that in mind, I started digging through the Blur Busters forums. I found quite a few posts from people who completely resolved the issue after rewiring parts of their electrical system or repairing their electrical panel. What's interesting is that those users never returned to the forum afterward, suggesting that their problem was genuinely solved.

The people who actually managed to fix the issue all seemed to point toward electrical problems as the root cause.

This is only my personal theory, but I believe the neutral conductor always carries electrical noise and high-frequency interference. For that noise to be dissipated effectively, the impedance between the neutral and the protective earth conductor may need to be very low, allowing the unwanted noise to be safely diverted to ground.

Conversely, if that impedance becomes too high, I suspect the noise can no longer be dissipated effectively. Instead, it may disturb the computer's common reference (ground reference), leading to the kinds of problems we've been experiencing.

I've seen two people suggest that the neutral conductor was the source of the problem.

One of them repaired the main neutral busbar in the electrical panel and installed a new dedicated circuit from the panel to the room where the PC was located. In other words, they rewired that part of the electrical system.

According to them, that completely resolved the issue.

I haven't seen anyone explicitly say that they measured the neutral conductor's impedance themselves. However, I would expect that most qualified electricians have the appropriate equipment to perform those measurements.

Before hiring an electrician, you could also ask whether they have the equipment necessary to measure neutral conductor impedance.

I ended up reaching almost the same conclusion two years ago. I ruled out hardware and software and RF noise. The only factor that consistently remained was the electrical environment.

I'm currently working with my power company to locate the source. So far we've confirmed that my 0.4 kV overhead line already has documented power quality issues, and they're once again logging the entire line.

PEN is one of my main suspects, but I can't honestly say it's the cause yet. At this point it's only a guess.

I'm also trying to find an independent electrical laboratory. But in those 2 years, I didn't really find anyone who had equipment or knowledge. I'll try to call 2 labs that I have found recently and see what they say.

Have you been able to identify what type of power quality issue is affecting the 0.4 kV overhead distribution line?

If the problem is on a line connected to that overhead network, then the affected area is much larger than I expected.

It sounds like you believe the issue originates upstream of the building's electrical system, somewhere in the power distribution network before the electricity even enters the building.

That's a very interesting theory.

[astroasis]

Has anyone had this diagnosed as a high-impedance neutral and taken action to address it? If so, what exactly was repaired? A joint? A span of conductors? The transformer neutral? Additional grounding? Or did anyone even try to measure it?

There is a reason I started suspecting that electricity is the root cause of this issue.

I approached it by dividing the possible causes into three categories: hardware, software, and the surrounding environment. After testing them as thoroughly as I could, I concluded that neither the hardware nor the software was responsible.

By the process of elimination, I came to the conclusion that the only remaining factor capable of affecting the PC is its electrical environment.

With that in mind, I started digging through the Blur Busters forums. I found quite a few posts from people who completely resolved the issue after rewiring parts of their electrical system or repairing their electrical panel. What's interesting is that those users never returned to the forum afterward, suggesting that their problem was genuinely solved.

The people who actually managed to fix the issue all seemed to point toward electrical problems as the root cause.

This is only my personal theory, but I believe the neutral conductor always carries electrical noise and high-frequency interference. For that noise to be dissipated effectively, the impedance between the neutral and the protective earth conductor may need to be very low, allowing the unwanted noise to be safely diverted to ground.

Conversely, if that impedance becomes too high, I suspect the noise can no longer be dissipated effectively. Instead, it may disturb the computer's common reference (ground reference), leading to the kinds of problems we've been experiencing.

I've seen two people suggest that the neutral conductor was the source of the problem.

One of them repaired the main neutral busbar in the electrical panel and installed a new dedicated circuit from the panel to the room where the PC was located. In other words, they rewired that part of the electrical system.

According to them, that completely resolved the issue.

I haven't seen anyone explicitly say that they measured the neutral conductor's impedance themselves. However, I would expect that most qualified electricians have the appropriate equipment to perform those measurements.

Before hiring an electrician, you could also ask whether they have the equipment necessary to measure neutral conductor impedance.

I ended up reaching almost the same conclusion two years ago. I ruled out hardware and software and RF noise. The only factor that consistently remained was the electrical environment.

I'm currently working with my power company to locate the source. So far we've confirmed that my 0.4 kV overhead line already has documented power quality issues, and they're once again logging the entire line.

PEN is one of my main suspects, but I can't honestly say it's the cause yet. At this point it's only a guess.

I'm also trying to find an independent electrical laboratory. But in those 2 years, I didn't really find anyone who had equipment or knowledge. I'll try to call 2 labs that I have found recently and see what they say.

Have you been able to identify what type of power quality issue is affecting the 0.4 kV overhead distribution line?

If the problem is on a line connected to that overhead network, then the affected area is much larger than I expected.

It sounds like you believe the issue originates upstream of the building's electrical system, somewhere in the power distribution network before the electricity even enters the building.

That's a very interesting theory.

That'd make more sense than the problem originating just inside your one home. I had the issue in 2 houses on the same road, but its fixed in a different house on a different road in the same town.

[lila]

I've tried using solar panels and batteries to power my computer when the UPS isn't working, but that didn't solve the problem; the symptoms persist. The issue isn't caused by electricity; I suspect it's due to high-frequency electromagnetic interference in the air or high-frequency common-mode interference on the line.If it's a power issue, why didn't trying to generate your own power source or isolate the battery solve the problem?

[lila]

Are there any 5G base stations nearby? Or high-frequency Wi-Fi at home? And satellite TV dishes? I've heard these are all sources of interference. Will unplugging my home Wi-Fi cause any problems?

[fa1kk]

Has anyone had this diagnosed as a high-impedance neutral and taken action to address it? If so, what exactly was repaired? A joint? A span of conductors? The transformer neutral? Additional grounding? Or did anyone even try to measure it?

There is a reason I started suspecting that electricity is the root cause of this issue.

I approached it by dividing the possible causes into three categories: hardware, software, and the surrounding environment. After testing them as thoroughly as I could, I concluded that neither the hardware nor the software was responsible.

By the process of elimination, I came to the conclusion that the only remaining factor capable of affecting the PC is its electrical environment.

With that in mind, I started digging through the Blur Busters forums. I found quite a few posts from people who completely resolved the issue after rewiring parts of their electrical system or repairing their electrical panel. What's interesting is that those users never returned to the forum afterward, suggesting that their problem was genuinely solved.

The people who actually managed to fix the issue all seemed to point toward electrical problems as the root cause.

This is only my personal theory, but I believe the neutral conductor always carries electrical noise and high-frequency interference. For that noise to be dissipated effectively, the impedance between the neutral and the protective earth conductor may need to be very low, allowing the unwanted noise to be safely diverted to ground.

Conversely, if that impedance becomes too high, I suspect the noise can no longer be dissipated effectively. Instead, it may disturb the computer's common reference (ground reference), leading to the kinds of problems we've been experiencing.

I've seen two people suggest that the neutral conductor was the source of the problem.

One of them repaired the main neutral busbar in the electrical panel and installed a new dedicated circuit from the panel to the room where the PC was located. In other words, they rewired that part of the electrical system.

According to them, that completely resolved the issue.

I haven't seen anyone explicitly say that they measured the neutral conductor's impedance themselves. However, I would expect that most qualified electricians have the appropriate equipment to perform those measurements.

Before hiring an electrician, you could also ask whether they have the equipment necessary to measure neutral conductor impedance.

I ended up reaching almost the same conclusion two years ago. I ruled out hardware and software and RF noise. The only factor that consistently remained was the electrical environment.

I'm currently working with my power company to locate the source. So far we've confirmed that my 0.4 kV overhead line already has documented power quality issues, and they're once again logging the entire line.

PEN is one of my main suspects, but I can't honestly say it's the cause yet. At this point it's only a guess.

I'm also trying to find an independent electrical laboratory. But in those 2 years, I didn't really find anyone who had equipment or knowledge. I'll try to call 2 labs that I have found recently and see what they say.

Have you been able to identify what type of power quality issue is affecting the 0.4 kV overhead distribution line?

If the problem is on a line connected to that overhead network, then the affected area is much larger than I expected.

It sounds like you believe the issue originates upstream of the building's electrical system, somewhere in the power distribution network before the electricity even enters the building.

That's a very interesting theory.

Something has already been identified.

The distribution company installed three power quality analyzers simultaneously: at the 0.4 kV transformer, in the middle of the overhead line, and at the end of the line near my connection.
According to their own report:
Long-term flicker (Plt) exceeded the standard at all three measurement points.
The flicker generally increased toward the end of the line.
A measurable voltage drop was observed along the line.
The measurements also showed phase unbalance on the downstream part of the line.

Based on these measurements, the utility concluded that the transformer itself is unlikely to be the primary source of the problem because similar disturbances were recorded along the entire feeder. While the effect becomes more pronounced toward the end of the overhead line. Since the transformer was replaced. And it didn't fix anything.

At the moment, they believe the disturbances originate somewhere on the 0.4 kV overhead distribution feeder downstream of the transformer, although they have not identified the exact source.

The overhead line has not yet been transferred to the utility's ownership, which has significantly delayed the investigation.

So yes, at this point the evidence suggests the issue originates somewhere upstream of my house, before the electricity enters the building, rather than inside my house.

0.4 kV Transformer (EVM PQ3+):
Frequency (Frequency Compliance) - Compliant / Within limits
RMS Voltage (Voltage Magnitude) - Compliant / Within limits
Long-Term Flicker Severity (Plt) - Non-Compliant / Exceeds limits
Voltage Unbalance / Negative Sequence (u2) - Compliant / Within limits
Voltage Unbalance / Zero Sequence (u0) - Compliant / Within limits
Total Harmonic Distortion (THD U) - Compliant / Within limits
Voltage Harmonics - Compliant / Within limits

Air Overhead Line Pole No. 1 (First Overhead Support) (EVM PQ3+):

Frequency (Frequency Compliance) - Compliant / Within limits
RMS Voltage (Voltage Magnitude) - Compliant / Within limits
Long-Term Flicker Severity (Plt) - Non-Compliant / Exceeds limits
Voltage Unbalance / Negative Sequence (u2) - Non-Compliant / Exceeds limits
Voltage Unbalance / Zero Sequence (u0) - Non-Compliant / Exceeds limits
Total Harmonic Distortion (THD U) - Compliant / Within limits
Voltage Harmonics - Compliant / Within limits

Air Overhead Line Pole No. 2 (Second Overhead Support) (EVM PQ3+):

Frequency (Frequency Compliance) - Compliant / Within limits
RMS Voltage (Voltage Magnitude) - Compliant / Within limits
Long-Term Flicker Severity (Plt) - Non-Compliant / Exceeds limits
Voltage Unbalance / Negative Sequence (u2) - Non-Compliant / Exceeds limits
Voltage Unbalance / Zero Sequence (u0)- Non-Compliant / Exceeds limits
Total Harmonic Distortion (THD U) - Compliant / Within limits
Voltage Harmonics - Compliant / Within limits

These measurements were performed by the utility itself, not by me. The investigation is still ongoing because the exact source of the disturbances has not yet been identified.

Here I attached:
Info At the 0.4 kV transformer;
Info At Air Overhead Line Pole No. 1
Info At Air Overhead Line Pole No. 2

[Ziehesh]

Хорошее расследование ,это энергокомпания с анализатором спектра родэ шварц гоняет?Или ГИЭ?
Попробуй взять Ам приемник походить вдоль линии 0.4 кв,возможно где то микроискрение ,хотя по идее анализатор бы уловил,но не всегда.
И ещё как вариант ищите электродвигатель ,или насос,чаще всего они такие сильные помехи в сеть вносят ,тиристоры,или частотно регулируемый привод.

A good investigation, is it the energy company with a Rode Schwarz spectrum analyzer? Or the GIE?
Try to take the Am receiver to walk along the 0.4 kv line, perhaps somewhere micro-sparking, although in theory the analyzer would have caught, but not always.
And another option is to look for an electric motor, or a pump, most often they are such strong interference in the network, thyristors, or a variable frequency drive.