High voltage power lines are harmful to health. Harm of high voltage lines near the house

If you start talking about impact of power lines on human health– it has increased greatly over the past 30 years.

For those who still do not really understand what, in fact, a power transmission line is, I will say that these are power lines that, like a web, have enveloped our Earth.

And, if weak powers are passed through these lines, then even more or less.

But if the power is 500 kV or more, then you need to seriously think about the place of residence or work, as well as about being in this zone.

A particularly dangerous situation has developed in modern cities, where you can often see not only a dense network of wires, but also powerful substations to power nearby areas. And, if in the Soviet Union they even more or less followed human safety standards, now the situation has changed.

The bottom line is that you can now see for yourself that in big cities new buildings are springing up like mushrooms. Yes, a house, of course, can be beautiful and comfortable, but the fact that there is a substation or a high voltage line nearby is secondary.

And where earlier, for example, sanitary standards forbade living, since the impact of power lines on human health was enormous, now the developer's money can solve a lot.

And now about the impact of power lines on human health:

I know a specific case on this topic that took place in Kyiv. A woman and her son bought an apartment at a bargain price on the ground floor of the building. But, she did not take into account the fact that under her floor, in the basement, there was a transformer that powered the entire house.

After a while, her son, in the literal sense of the word, went crazy, and he was sent for treatment, and the woman began to suffer from terrible mental disorders. Why did this happen, you ask? There is scientific evidence for this.

Back in 1989, G.N. Alexandrov, published a book, the title of which is "Ultra-high voltage installations and environmental protection." He described that a long stay of a person under the influence of a field of tension, which is created from electricity passing through the wires, causes disorders in a person.

Disorders of the cardiovascular system, disruption of the functioning of the brain, can lead to its tumor, and the immune system, reproductive and excretory systems also suffer.

The reason for such imbalances is the impact of the electromagnetic field on the human biofield. Roughly speaking, our brain, as a source, sends nerve impulses to all parts of the body. Thanks to this, all reactions in the body and its full functioning take place.

But, when some field from the outside begins to act, the full-fledged transmission of signals from the brain to organs and systems is disrupted. It is because of this that many processes are disrupted.

Now, let's think about the following fact for a second. In the United States, there is a state standard that says that wires carrying high power and voltage must be located at least 1 kilometer from residential buildings.

And it is known for sure that, for example, in Ukraine and in the same Russia, the norms state that the distance should not be 1 kilometer, but only 50 meters. How do you like that? And all right, if a person lives somewhere in the countryside, where one such line can pass. And in big cities there are dozens of such lines. And less power and even more.

Therefore, I want to warn you that the impact of power lines on human health is enormous, and unambiguously, is harmful to health. And don't neglect it. What do you think?

Long-term stay for months and years of people in the zone of power lines, which emit electromagnetic waves and create an electromagnetic field, leads to negative changes in the body. This condition causes disturbances in the nervous, cardiovascular, endocrine, reproductive, hematological, immune systems and increases the risk of oncopathology.

That is why, in order to protect people from the harmful effects of an electromagnetic field along the passage of a high-voltage line, the installation of sanitary protection zones is prescribed, the size of which is set taking into account the voltage of the power line.

Are power lines harmful?

In some cases, a high-voltage (more than 150 kW) power line runs next to residential buildings. This fact is extremely worrying for the residents of such areas, so they have a completely logical question - are power lines (power lines) harmful to health?

People's fears are not unfounded. So, if you stay in the area of the electromagnetic field emitted by power lines for a long time, your well-being and health may deteriorate.

High voltage power lines harm to health

The health status of people in close contact with power lines in production conditions or living nearby is approximately the same. People complain of increased fatigue, irritability, memory impairment, sleep disturbance, depression, migraine, disorientation in space, muscle weakness, problems with the cardiovascular system, hypotension, visual impairment, color perception atrophy, decreased immunity, potency, changes in blood composition.

Living under stress

When choosing real estate, we weigh many factors - the quality of access roads, remoteness from the city center, the development of communications, etc. But when communications in the form of high-voltage power lines (power lines) are directly above our heads, the question arises of how safe it is. And often selling housing near power lines is a big problem.

In the USSR, the magnetic component of the radiation of high-voltage power lines was not taken into account at all in safety standards.

Protection against electromagnetic radiation. Gamma 7

In the 60s, specialists in Russia paid attention to the electromagnetic fields of power lines (TL). After lengthy and in-depth studies on the health of people who have contact with power lines at work, the results of these studies showed that people who were in the electromagnetic field for a long time often complained of weakness, irritability, fatigue, memory loss and sleep disturbance.

What is the impact of power lines on human health?

For those who still do not really understand what, in fact, a power transmission line is, I will say that these are power lines that, like a web, have enveloped our Earth.

How harmful to health is the power line passing next to the site?

With a long stay (months - years) of people in the electromagnetic field, power lines can lead to adverse changes in health, cause changes in the state of the cardiovascular, nervous, endocrine, hematological, reproductive, immune systems, and also increases the risk of developing oncopathology.

In order to protect the population from the effects of EMF, sanitary protection zones (SPZ) are established along the route of the high-voltage line, the size of which depends on the voltage class of the power transmission line.

About the dangers of power lines on the human body

They talk a lot about the dangers of high-voltage power lines and most often in vain. Whatever theories have been put forward about how power lines affect a person, here the statistics of the incidence of cancer of people living in an area with a nearby high-voltage line, and the effect of power lines on brain cells, and even widespread hair loss are associated with closely spaced high-voltage lines.

Just about health

Thomas Edison, who invented the first incandescent lamp back in 1880, could not imagine how dependent his descendants would be on this invention. Light, TV, cordless telephone, electric stove and kettle, heaters and pumps - how can we now do without these familiar things? Power lines have entangled the whole world, invisible energy runs through the wires to the most remote corners of the planet.

Sanitary zone of the power line. The influence of electromagnetic fields on humans

Power lines during operation create electric and magnetic fields of industrial frequency in the adjacent space. The distance over which electromagnetic fields propagate from the wires of the line reaches tens of meters. The range of propagation of the electromagnetic field depends on the magnitude of the voltage of the power transmission line (the number indicating the voltage class is in the name of the transmission line - for example, a 220 kV transmission line), the higher the voltage, the larger the zone of an increased level of the electromagnetic field, while the dimensions of the zone do not change during the operation of the transmission line.

In the 1960s it was discovered dangerous exposure to electromagnetic fields of power lines on the human body.

It has been proven that people living near power lines have oncological diseases, serious reproductive disorders, as well as the so-called electromagnetic hypersensitivity syndrome. It is quite scary to hear reports of research by some foreign scientists on the impact of high-voltage power lines on children's health. It was found that children living at a distance of up to 150 meters from power lines, substations, are twice as likely to suffer from leukemia, and almost every one of them has disorders of the nervous system.

In some countries, there is such a medical term as electromagnetic allergy. People suffering from it have the opportunity to change their place of residence for free to another, located as far as possible from sources of electromagnetic radiation. All this is officially sponsored by the government! How do I comment on the power industry about the possible danger posed by power lines? First of all, they insist that the voltage of electric current in power lines can be different, and therefore one should distinguish between safe and dangerous voltage. The range of influence of the magnetic field created by the power line is directly proportional to the power of the line itself. A professional determines the voltage class of a power transmission line by the number of wires in a bundle not on the support itself:

- 2 wires - 330 kV;

- 3 wires - 500 kV;

- 4 wires - 750 kV.

The lower voltage class of the power transmission line is determined by the number of insulators:
- 3-5 insulators - 35 kV;

- 6-8 insulators - 110 kV;

- 15 insulators - 220 kV.

In order to protect the population from the harmful effects of power lines, there are special standards that define a certain sanitary zone, conditionally starting from the outermost wire of the power line projected onto the ground:

- Voltage less than 20 kV - 10 m;

- Voltage less than 35 kV - 15 m;

- Voltage less than 110 kV - 20 m;

- Voltage less than 150-220 kV - 25 m;

- Voltage less than 330 - 500 kV - 30 m;

- Voltage less than 750 kV - 40 m.

These norms apply to Moscow and the Moscow region, and in accordance with them, building plots are also allocated. These standards do not take into account the harmful effects of electromagnetic radiation, and in fact it is sometimes tens, and sometimes hundreds of times more dangerous to health!

To prevent the magnetic field from affecting health status, multiply each of the listed indicators by 10. It turns out that a low-power power line is harmless only at a distance of 100 meters! The wires of power lines conceal a voltage that is in maximum contact with the threshold of a corona discharge. In bad weather, this discharge releases a cloud of oppositely charged ions into the atmosphere. The electric field created by them, even at a great distance from power lines, can be much larger than the permissible harmless values.

A new project of the Moscow government on the transfer of some sections of high-voltage power lines underground. The mayor's office plans to put the vacated area under construction. This is where a logical question arises - will underground power lines be safe for people living above them? Will developers call energy specialists to the area planned for housing construction? The electromagnetic radiation of underground power lines and its impact on the human body, unfortunately, is still poorly understood.

The first to go underground will be power lines located in the districts - Leninsky Prospekt, Prospekt Mira and Shchelkovskoye Highway. Further, it is planned to remove under the ground power lines of the North-Eastern Administrative District, namely in Northern and Southern Medvedkovo, as well as in Bibirevo and Altufyevo. These territories have already been put up for sale and are waiting for their investors. In total, there are more than a hundred power lines and open-type electrical substations in the capital. Potential developers of land from under power lines, and with them the Moscow government, argue that modern technologies will completely isolate electromagnetic radiation. For this, it is planned to use coaxial cables laid in special shielded collectors.

The transfer of power lines underground is an expensive procedure (approximately 1 million euros per 1 km of cable being laid), and therefore there is no guarantee that developers will not “save”. Therefore, there is no certainty that housing built over power lines will be safe in all respects.

The most correct decision is to buy a home located in a safe area - where there is no harm to health! ♌

Catching goldfish online

Currently, there are many problems associated with prolonged exposure to power lines on the nervous system, cardiovascular, immune and reproductive systems.

Power line(TL) - one of the components of the electrical network, a system of power equipment designed to transmit electricity through electric current.

The wires of a working power line create electric and magnetic fields of industrial frequency in the adjacent space. The distance to which these fields propagate from the wires of the line reaches tens of meters.

Within the sanitary protection zone of power lines it is prohibited:

place residential and public buildings and structures;

arrange areas for parking and stopping all types of transport;

to locate car service enterprises and warehouses for oil and oil products;

carry out operations with fuel, repair machines and mechanisms.

SanPiN №2971-84

And now what is happening in reality:

One of the most powerful electromagnetic wave exciters is industrial frequency currents (50 Hz). So, the electric field strength directly under the power line can reach several thousand volts per meter soil, although due to the property of reducing the tension by the soil, already at a distance of 100 m from the line, the tension drops sharply to several tens of volts per meter.

Studies of the biological effects of the electric field found that already at a tension of 1 kV / m, it has an adverse effect on the human nervous system, which in turn leads to disorders of the endocrine apparatus and metabolism in the body (copper, zinc, iron and cobalt), disrupts physiological functions: heart rate, blood pressure, brain activity, metabolic processes and immune activity.

As for electricians and other power line workers, the situation is even worse.

The personnel of power transmission lines had visual impairments, changes in color perception, narrowing of visual fields in green, red and especially blue, vascular changes in the retina. Studies have been conducted of professionals working 8 hours a day in contact with AMY. Some have experienced a decrease in sex drive, a tendency to depression and irritability. There was a decrease in the number of lymphocytes in the blood.

See what happens to the biofield of a person living near power lines:

Human biofield- this is its electromagnetic field, that is, the totality of the radiation of each cell of our body. In fact, it is possessed by any object on Earth, any living organism.

Our electromagnetic field was formed under the influence of the Earth's electromagnetic field. And since today's electromagnetic background is tens of thousands of times higher than natural, our field cannot withstand such an onslaught.

If other sources of radiation, much more powerful than the radiation of our body, begin to act on our electromagnetic field, then chaos begins in the body. This leads to a drastic deterioration in health.

From an energetic point of view, the biofield performs a protective function. It is also called an aura. In fact, this is the first protective barrier.

Fig. 1 - Normal human biofield. A person has protection from electromagnetic radiation

Rice. 2 - The biofield of a person living near power lines and in the geopathic zone

Facts:

One of the largest studies of this issue took place in England and Wales from 1962 to 1995.

Medical records of more than 29,000 children under 15 were reviewed

It turned out that the risk of leukemia in children who lived from birth at a distance of up to 200 meters from power lines is 70%, and from 200 to 600 m - 20%.

Statistical data showed that power lines have a significant negative impact.

“Our study shows that about 5 out of 400 cases of childhood leukemia can be associated with high-voltage lines, which is about 1% of cases,” said Gerald Draper, head of the research team at the University of Oxford.

The works of V. N. Anisimov cite the facts of Swedish scientists:

They analyzed data on the incidence of cancer among people living in close proximity to high-voltage power lines (at a distance less than 300 m).

In a group of 400 thousand. person was found 142 children with various types of malignant neoplasms and 548 adults with a brain tumor or leukemia.

Also, a survey was conducted on the subject of reproductive function in 542 workers substations power lines. This analysis revealed such pathologies as:
1) an increase in the number of congenital malformations if the father worked at a power plant;
2) decrease in the function of fertilization among a part of male workers
3) the birth rate of boys has decreased.

Was also examined youth group under 18 living and within 150 m from substations, transformers, metro, railway power lines and power lines. They were twice as likely to have disorders of the nervous system and leukemia.

In Denmark, 1707 children under the age of 16 were examined during the period. Due to living near power lines, some have developed brain tumors, leukemia.

Protection against electromagnetic fields of power lines:

And what to do??

We understand that if a power line is built near your house, you cannot move it. And not everyone can afford to move today.

And even if you don’t live near power lines, then, believe me, they make a very good contribution to the general electromagnetic background of the city in which you live anyway.

Today, there is already a reliable protection against electromagnetic fields and their torsion components.

This must be done because the situation concerns your health and the health of your entire family. Especially if you are young and just planning it, or you have small children.

The biological influence of electric and magnetic fields on the organism of people and animals has been studied quite a lot. The effects observed in this case, if they occur, are still not clear and difficult to determine, so this topic remains relevant.

Magnetic fields on our planet have a dual origin - natural and anthropogenic. Natural magnetic fields, so-called magnetic storms, originate in the Earth's magnetosphere. Anthropogenic magnetic disturbances cover a smaller area than natural ones, but their manifestation is much more intense, and therefore, brings more tangible damage. As a result of technical activity, a person creates artificial electromagnetic fields, which are hundreds of times stronger than the natural magnetic field of the Earth. Sources of anthropogenic radiation are: powerful radio transmitting devices, electrified vehicles, power lines.

One of the most powerful pathogens is industrial frequency currents (50 Hz). Thus, the strength of the electric field directly under the power line can reach several thousand volts per meter of soil, although due to the property of lowering the strength of the soil, already at a distance of 100 m from the line, the intensity drops sharply to several tens of volts per meter.

Studies of the biological effects of the electric field found that already at a strength of 1 kV / m it has an adverse effect on the human nervous system, which in turn leads to endocrine apparatus and metabolism disorders in the body (copper, zinc, iron and cobalt), disrupts physiological functions: heart rate, blood pressure, brain activity, metabolic processes and immune activity.

Since 1972, publications have appeared in which the effect on humans and animals of electric fields with strengths of more than 10 kV / m was considered.

Proportional to current and inversely proportional to distance; the strength of the electric field is proportional to the voltage (charge) and inversely proportional to the distance. The parameters of these fields depend on the voltage class, design features and geometric dimensions of the high-voltage transmission line. The appearance of a powerful and extended source of the electromagnetic field leads to a change in those natural factors under which the ecosystem was formed. Electric and magnetic fields can induce surface charges and currents in the human body.

Studies have shown that the maximum current in the human body induced by an electric field is much higher than the current caused by a magnetic field. So, the harmful effect of the magnetic field is manifested only when its intensity is about 200 A / m, which happens at a distance of 1-1.5 m from the wires of the line phase and is dangerous only for maintenance personnel when working under voltage. This circumstance made it possible to conclude that there is no biological effect of magnetic fields of industrial frequency on people and animals under power lines. Thus, the electric field of power lines is the main biologically effective factor in an extended power transmission, which can be a barrier to the migration of various types of aquatic and terrestrial fauna.

Based on the design features of power transmission (wire sagging), the greatest influence of the field is manifested in the middle of the span, where the intensity for over- and ultra-high voltage lines at the level of human growth is 5 - 20 kV / m and above, depending on the voltage class and line design.

At the supports, where the height of the suspension of the wires is the greatest and the shielding effect of the supports affects, the field strength is the smallest. Since there can be people, animals, vehicles under the wires of power lines, it becomes necessary to assess the possible consequences of long-term and short-term stay of living beings in an electric field of various strengths.

The most sensitive to electric fields are ungulates and humans in footwear that isolates them from the ground. Animal hoof is also a good insulator. The induced potential in this case can reach 10 kV, and the current pulse through the body when touching a grounded object (a branch of a bush, a blade of grass) is 100 - 200 μA. Such current impulses are safe for the body, but unpleasant sensations make ungulates avoid the route of high-voltage power lines in the summer.

In the action of an electric field on a person, the currents flowing through his body play a dominant role. This is determined by the high conductivity of the human body, where organs with blood and lymph circulating in them predominate.

At present, experiments on animals and human volunteers have established that a current density with a conductivity of 0.1 μA/cm and below does not affect the functioning of the brain, since the impulse biocurrents that usually flow in the brain significantly exceed the density of such a conduction current.

At a conductivity current density of 1 μA/cm, light circles flicker in the eyes of a person, higher current densities already capture the threshold values of stimulation of sensory receptors, as well as nerve and muscle cells, which leads to the appearance of fear, involuntary motor reactions.

In the case of a person touching objects isolated from the ground in the zone of an electric field of significant intensity, the current density in the heart zone strongly depends on the state of the “underlying” conditions (type of footwear, soil condition, etc.), but can already reach these values.

At the maximum current corresponding to Em ax == 15 kV/m (6.225 mA), the known fraction of this current flowing through the head region (about 1/3) and the head area (about 100 cm), the current density

For human health, the problem is to determine the relationship between the current density induced in the tissues and the magnetic induction of the external field, V. Calculation of the current density

is complicated by the fact that its exact path depends on the distribution of conductivity y in body tissues.

So, the specific conductivity of the brain is determined by y=0.2 cm/m, and the heart muscle y=0.25 cm/m. If we take the radius of the head as 7.5 cm and the radius of the heart as 6 cm, then the product yR is the same in both cases. Therefore, one idea can be given for the current density at the periphery of the heart and brain.

It has been determined that the magnetic induction that is safe for health is about 0.4 mT at a frequency of 50 or 60 Hz. In magnetic fields (from 3 to 10 mT, f = 10 - 60 Hz), the appearance of light flickers was observed, similar to those that occur when pressing on the eyeball.

The density of the current induced in the human body by an electric field with a magnitude of intensity E is calculated as follows:

with different k coefficients for the brain and heart regions.

The value of k=3-10 -3 cm/Hzm.

According to German scientists, the field strength at which hair vibration is felt by 5% of the tested men is 3 kV / m, and for 50% of the men tested, it is 20 kV / m. At present, there is no evidence that the sensations caused by the action of the field create any adverse effect. With regard to the relationship of current density with biological influence, four areas can be distinguished, presented in the table.

The latter range of current density refers to exposure times on the order of one cardiac cycle, i.e. approximately 1 s for a human. For shorter exposures, the thresholds are higher. To determine the threshold value of the field strength, physiological studies were performed on humans in the laboratory at a field strength of 10 to 32 kV/m. It has been established that at a voltage of 5 kV/m, 80% of people do not experience pain during discharges when they touch grounded objects. It was this value that was adopted as the standard when working in electrical installations without the use of protective equipment.

The dependence of the allowable time spent by a person in an electric field with a strength E more than the threshold is approximated by the equation

The fulfillment of this condition ensures the self-healing of the physiological state of the body during the day without residual reactions and functional or pathological changes.

Let us get acquainted with the main results of studies of the biological effects of electric and magnetic fields, carried out by Soviet and foreign scientists.

The influence of electric fields on personnel

During the studies, an integrating dosimeter was fixed on the upper part of the forearm of each worker. It was found that the average daily exposure for workers on high-voltage lines ranged from 1.5 kV/(m-h) to 24 kV/(m-h). Maximum values are noted in very rare cases. From the data obtained from the study, it can be concluded that there is no noticeable relationship between exposure in the fields and the general health of people.

Overhead power lines and cancer in children

In residential premises, it can be created by household electrical equipment and wiring, external underground cables, as well as overhead power lines. The studied and control objects were grouped at intervals of 25 m to the overhead power line, and the degree of risk at a distance of more than 100 m from the line was taken as one.

The results obtained do not support the hypothesis that power frequency magnetic fields affect the occurrence of cancer in children.

Electrostatic effect on human and animal hair

Research was carried out in connection with the hypothesis that the effect of the field felt on the surface of the skin is caused by the action of electrostatic forces on the hair. As a result, it was found that at a field strength of 50 kV/m, the subject felt itching associated with hair vibration, which was recorded by special devices.

The influence of the electric field on plants

The experiments were carried out in a special chamber in an undistorted field with a strength of 0 to 50 kV/m. A slight damage to the leaf tissue was detected at an exposure of 20 to 50 kV/m, depending on the configuration of the plant and the initial moisture content in it. Tissue necrosis has been observed in plant parts with sharp edges. Thick plants with a smooth rounded surface were not damaged at a voltage of 50 kV/m. Damage is a consequence of the crown on the protruding parts of plants. In the weakest plants, damage was observed already 1–2 hours after exposure. Importantly, in wheat seedlings, which have very sharp ends, crown and damage were visible at a relatively low tension of 20 kV/m. This was the lowest threshold for damage in the studies.

The most probable mechanism of plant tissue damage is thermal. Tissue injury occurs when the field strength becomes high enough to cause corona and a high density corona current flows through the tip of the leaf. The heat released at the same time on the resistance of the leaf tissue leads to the death of a narrow layer of cells, which relatively quickly lose water, dry out and shrink. However, this process has a limit and the percentage of dried plant surface is small.

The effect of the electric field on animals

The research was carried out in two directions: the study at the level of the biosystem and the study of the thresholds of detected influences. Among chickens placed in a field with a tension of 80 kV/m, there was an increase in weight, viability, and low mortality. The field perception threshold was measured on domestic pigeons. Pigeons have been shown to have some sort of mechanism for detecting low-strength electric fields. No genetic changes were observed. It has been noted that animals exposed to a high electric field may experience a mini-shock due to extraneous factors depending on the conditions of the experiment, which can lead to some anxiety and arousal of the test subjects.

In a number of countries, there are regulatory documents that limit the field strength limits in the area of overhead power lines. A maximum voltage of 20 kV/m has been recommended in Spain and the same value is currently considered as the limit in Germany.

Public awareness of the effects of the electromagnetic field on living organisms continues to grow, and some interest and concern about these effects will lead to continued relevant medical research, especially on people living near overhead power lines.

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