scholarly journals On the relationship of power lines outages caused by thunderstorms with Forbush decreases of cosmic rays

2021 ◽  
Vol 946 (1) ◽  
pp. 012017
Author(s):  
L P Shadrina ◽  
V I Kozlov ◽  
Yu M Grigoriev
Keyword(s):  
Cosmic Rays ◽  
Power Transmission ◽  
Geomagnetic Storms ◽  
Atmospheric Electricity ◽  
Power Lines ◽  
Storm Events ◽  
Forbush Decreases ◽  
Summer Time ◽  
Relationship Of ◽  
The Relationship

Abstract It is known that power lines outages often occur during thunderstorms. Here are the results of comparing of power lines outages in Yakutia from 2012 to 2018 with the database of Forbush-Storm events. This database contains information on geomagnetic storms and Forbush-decreases of cosmic rays from 1996 to 2018. There are 3 classes of the events: if these two ground-based manifestations of solar wind disturbances occur simultaneously (Forbush with Storm, F+S) or separately (Forbush without Storm, F-S and Storm without Forbush, S-F). For 7 years in the summer time, 73 power lines outages associated with thunderstorms were recorded. It is shown that in 56 cases these outages occurred simultaneously with (F-S) class, 16 – with (F+S) class, and only in 1 case lightning outages were not associated with Forbush-Storm events (-F-S). In 19 cases of (S-F) class, not a single lightning outage was recorded. This means that lightning outages on power lines are mainly associated with decreases in the cosmic rays intensity, and during geomagnetic storms, power transmission disruptions occur when storms are simultaneous with Forbush-decreases of cosmic rays. Apparently, this indicates the significance of the effect of cosmic rays on atmospheric electricity, and it is more significant than the effect of geomagnetic storms.

Distribution of the number of strong earthquakes and the intensity of space rays during the solar activity cycle

2020 ◽  
Author(s):  
Valery L. Yanchukovsky ◽  
◽  
Anastasiya Yu. Belinskaya ◽  
Keyword(s):  
Solar Activity ◽  
Cosmic Rays ◽  
Cosmic Ray ◽  
Activity Cycle ◽  
Solar Activity Cycle ◽  
Strong Earthquakes ◽  
Cosmic Ray Intensity ◽  
Relationship Of ◽  
The Relationship

The relationship of Earth's seismicity with solar activity is investigated using the results of continuous long–term observations of cosmic ray intensity, solar activity and the number of strong earthquakes. Modulation of the flux of cosmic rays is used as information on the level of solar activity, processes on the Sun and interplanetary medium. The distribution of the number of sunspots, the intensity of cosmic rays and the number of strong earthquakes in the solar cycle is presented.

About determination of coordinates of sources of geomagnetic perturbations according to the world network of magnetic observatories

2020 ◽  
Author(s):  
Beibit Zhumabayev ◽  
Ivan Vassilyev ◽  
Vladimir Protsenko ◽  
Saltanat Zhumabayeva
Keyword(s):  
Coordinate System ◽  
Geomagnetic Storms ◽  
Magnetic Clouds ◽  
The World ◽  
Relationship Of ◽  
The Relationship ◽  
Geomagnetic Perturbations ◽  
Magnetic Observatories ◽  
Single Coordinate

<p>A method for determining the coordinates of geomagnetic perturbation sources based on joint data processing of the world network of magnetic observatories is proposed. A large statistical material showed the relationship of large geomagnetic storms with the interaction of two or more magnetic clouds formed as a result of coronal mass ejections. To determine the coordinates of the sources of perturbations, it is proposed to use the data of magnetic observatories of the "INTERMAGNET" international network, which has more than 100 observation points distributed around the world and equipped with modern identical hardware. The results of geomagnetic field measurement obtained by magnetic observatories are brought to a single coordinate system. It was achieved by rotation of the axes of local stations, which allows determining the coordinates of the sources of perturbations and evaluating the accuracy of specifying the coordinate system of each local observatory.</p>

Exploration of the Relationship of the Voltage Critical Clearing Time and the Voltage Transient Transmission Capacity

2014 ◽  
Vol 488-489 ◽  
pp. 905-909
Author(s):  
Bing Liu ◽  
Jie Meng ◽  
Zhen Yang ◽  
Ying Wang ◽  
Hua Zhi Xie ◽  
...  
Keyword(s):  
Power Transmission ◽  
Transmission Capacity ◽  
Transmission Network ◽  
Transmission Characteristics ◽  
Clearing Time ◽  
Voltage Transient ◽  
Transient Voltage ◽  
The Stability ◽  
Relationship Of ◽  
The Relationship

Both the voltage critical clearing time (VCCT) and the voltage transient transmission capacity (VTTC) are always used to evaluate the stability of the system transient voltage, and their relationships are studied and clarified in the paper. The stability of the transient voltage is mainly depended on the dynamic reactive characteristics of load and the transmission characteristics of voltage and power. Based on the analysis on the dynamic reactive characteristics of load and the transmission characteristics of a power transmission network, the characteristics of the VCCT and the VTTC are studied in this paper. Finally, a conclusion, i.e. the margin of the VCCT and the VTTC has a nonlinear characteristic, is obtained by simulations on the actual power grid. According to the conclusion, the voltage stability cannot be exactly reflected by the VCCT margin.

scholarly journals Solar activity and Earth seismicity

2021 ◽  
Vol 7 (1) ◽  
pp. 84-97
Author(s):  
Valery Yanchukovsky
Keyword(s):  
Solar Activity ◽  
Cosmic Rays ◽  
Coronal Holes ◽  
Time Lag ◽  
Galactic Cosmic Rays ◽  
Tectonic Activity ◽  
Solar Cosmic Rays ◽  
Strong Earthquakes ◽  
Forbush Decreases ◽  
The Relationship

Using the results of continuous long-term observations over 50 years (including solar cycles 20–24), we study the relationship between Earth’s seismicity and solar activity. An increase in the number of strong earthquakes on the planet occurs during the decline phase of solar activity when charged particle fluxes from high-latitude coronal holes increase, as well as during solar minimum when the intensity of galactic cosmic rays reaches a maximum. The change in the number of strong earthquakes (with magnitude 6) is considered in terms of variations in the intensity of galactic cosmic rays, Forbush decreases, and ground level enhancements in solar cosmic rays (GLE events). The number of strong earthquakes is shown to increase after Forbush decreases with a time lag from ~1 to ~6 days depending on the amplitude of Forbush decrease and after GLE events the number of strong earthquakes increases by ~8 day. In the number of strong earthquakes, a six-month variation is observed, which seems to follow the six-month variation in cosmic rays with a delay of ~1–2 months. It is surmised that the relationship between solar activity and Earth’s seismicity seems to be mediated through the modulation of galactic cosmic rays and atmospheric processes that provoke the occurrence of earthquakes in regions where the situation has already been prepared by tectonic activity.

scholarly journals Solar activity and Earth seismicity

2021 ◽  
Vol 7 (1) ◽  
pp. 67-77
Author(s):  
Valery Yanchukovsky
Keyword(s):  
Solar Activity ◽  
Cosmic Rays ◽  
Coronal Holes ◽  
Time Lag ◽  
Galactic Cosmic Rays ◽  
Tectonic Activity ◽  
Solar Cosmic Rays ◽  
Strong Earthquakes ◽  
Forbush Decreases ◽  
The Relationship

Using the results of continuous long-term observations over 50 years (including solar cycles 20–24), we study the relationship between Earth’s seismicity and solar activity. An increase in the number of strong earthquakes on the planet occurs during the decline phase of solar activity when charged particle fluxes from high-latitude coronal holes increase, as well as during solar minimum when the intensity of galactic cosmic rays reaches a maximum. The change in the number of strong earthquakes (with magnitude 6) is considered in terms of variations in the intensity of galactic cosmic rays, Forbush decreases, and ground level enhancements in solar cosmic rays (GLE events). The number of strong earthquakes is shown to increase after Forbush decreases with a time lag from ~1 to ~6 days depending on the amplitude of Forbush decrease and after GLE events the number of strong earthquakes increases by ~8 day. In the number of strong earthquakes, a six-month variation is observed, which seems to follow the six-month variation in cosmic rays with a delay of ~1–2 months. It is surmised that the relationship between solar activity and Earth’s seismicity seems to be mediated through the modulation of galactic cosmic rays and atmospheric processes that provoke the occurrence of earthquakes in regions where the situation has already been prepared by tectonic activity.

Power Transmission Rule Described by Block Diagram

2014 ◽  
Vol 668-669 ◽  
pp. 703-706
Author(s):  
Yu Long Chen ◽  
Hai Bao
Keyword(s):  
Steady State ◽  
Power Flow ◽  
Power Transmission ◽  
Block Diagram ◽  
Power Grid ◽  
Signal Transmission ◽  
Input Power ◽  
Basic Power ◽  
Relationship Of ◽  
The Relationship

Analytically describing the relationship among steady-state power flow numerical values is a significant proposition. Because the block diagram has the ability to describe the signal transmission analytically, we choose this method to study the steady-state grid’s power transmission rule. Each node or branch is chosen as a basic power transmission unit, and the ratio between the unit’s output power and input power is defined as power transmission gain. The power transmission relationship of each unit can be established according to the circuit analysis, and then the block diagram of each unit can be built on the basis of above relationship. Finally, a block of the whole power grid can be drawn according to the basic units’ connection relationships. The transmission relationship of the whole power grid was analytically expressed by the block diagram simplification method.

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