EP3695236A1 - Verfahren, mobiles endgerät und messsystem zur messung elektrischer eigenschaften einer erdungsanlage - Google Patents
Verfahren, mobiles endgerät und messsystem zur messung elektrischer eigenschaften einer erdungsanlageInfo
- Publication number
- EP3695236A1 EP3695236A1 EP18778476.4A EP18778476A EP3695236A1 EP 3695236 A1 EP3695236 A1 EP 3695236A1 EP 18778476 A EP18778476 A EP 18778476A EP 3695236 A1 EP3695236 A1 EP 3695236A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mobile terminal
- grounding
- ground
- probe
- electrical properties
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/20—Measuring earth resistance; Measuring contact resistance, e.g. of earth connections, e.g. plates
- G01R27/205—Measuring contact resistance of connections, e.g. of earth connections
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/16—Measuring impedance of element or network through which a current is passing from another source, e.g. cable, power line
- G01R27/18—Measuring resistance to earth, i.e. line to ground
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
- G01R27/20—Measuring earth resistance; Measuring contact resistance, e.g. of earth connections, e.g. plates
Definitions
- the invention is in the field of power engineering and relates in particular to methods and devices as well as measuring systems for measuring electrical properties in a grounding system.
- Earthing systems are used for earthing, i. for the discharge of electrical currents into the soil.
- a grounding system is connected to a ground, in which electrical currents are to be derived.
- Grounding systems can usually be used in electrical installations, in particular high-voltage installations, and / or in high-voltage networks in order to ground them. In this way, interference currents, such as due to lightning strikes or in case of failure of the electrical system or the high-voltage network, can be derived in the soil.
- grounding system In order to be able to ensure the proper and / or safe functioning of such a grounding system, it may be necessary, in particular, to measure the electrical properties of a grounding system and, in particular, of this grounding system. It may also be necessary to measure the electrical properties of other electrical installations, in particular high-voltage installations, in the vicinity of the grounding system and / or the electrical properties of the ground. Usually, for this purpose, a so-called potential funnel and / or step voltages and / or contact voltages are measured in the grounding system. So In particular, in the case of a single-pole fault, dangerous stepping and touching voltages can occur inside and outside an electrical system.
- the effectiveness of the grounding system can be determined, in particular as part of a grounding test to be checked and thus in particular to ensure the safety of persons inside and outside the plant and / or a power accident to a person located there avoid.
- the potential funnel describes the course of the electrical potential in the grounding system, in particular depending on the distance from the grounding system and / or the direction relative to the grounding system, when an electrical current is dissipated by means of the grounding system into the ground.
- the electrical potential directly at the earthing system - as an absolute value - the largest and decreases with increasing distance, so that in graphical representation, the shape of an - possibly upside down - funnel results.
- the step voltage describes the electrical voltage between two points of a soil - ie in particular the surface of the soil.
- a step voltage can occur, in particular, when an electrical current is conducted into the ground by means of a grounding system.
- the tension that exists between the two feet of the person especially if this makes a step, causing the feet two about 1 m apart points on the ground usually not exceeding a certain limit.
- the touch voltage describes the electrical voltage which is applied between a contact point of the ground and a point of contact of an object, in particular a part of an electrical system - such as the earthing system. Again, this should usually not exceed certain limits. In particular, the Limit values for the voltages depend on the duration of the fault 500 volts and / or at DC voltage 120 volts and / or at AC voltage 50 volts.
- the measurement of the potential funnel in grounding systems is carried out in accordance with the standards EN 50522 or IEEE 81.
- the electrical voltage between the grounding system and a grounding probe is measured at different distances from the grounding system.
- a first person positions the grounding probe at various positions in an environment of the grounding system, in particular with increasing distances from the grounding system and / or in different directions to the grounding system, thereby establishing an electrical connection between the grounding probe and the ground at the respective position while a second person in the grounding system respectively the electrical properties between the grounding probe and the grounding system, in particular the respective electrical potential, by means of a measuring device which is in particular electrically connected to a ground terminal of the grounding system and the grounding probe and at and / or in the grounding system is arranged, measures.
- the distance between the grounding probe and the earthing system can be determined by the number of steps from the earthing system to the earthing probe or by means of a measuring wheel. If the potential funnel is also to be determined depending on the direction, the different directions can be determined on the basis of the directions of the compass. Usually, the respective distance and / or the respective direction as well as the respective measured value-in particular the electrical potential-are manually logged by the second person who performs the measurements.
- the step and touch voltages are usually determined in accordance with EN 50522 and IEEE 80 or IEEE 81 standards.
- a measuring device with two points on the ground can each be electrically connected and the electrical potential between the two points - ie the two points of contact with the ground to which the measuring device is electrically connected - measured, the measured values and the respective positions be manually logged.
- a measuring device can in each case be electrically connected with a contact point of the ground and a contact point of an object which is in the vicinity of the ground, in particular above the ground, the electric potential between the object - in particular a contact point could touch a person who is standing on the ground - and the touch point of the ground, whereby the measured values, the respective position and optionally the respectively measured object and / or the respective contact point of the object are manually logged.
- the invention has for its object to improve the measurement of electrical properties in a grounding system, in particular for the determination of a potential funnel as well as of step and contact voltages in a grounding system, and in particular to make the performance of such a measurement more efficient.
- a first aspect of the invention relates to a method of measuring electrical characteristics in a grounding system connected to a ground.
- the method has the following. In the method, at least one position in an environment of the grounding system is determined by means of a mobile terminal to which a grounding probe is electrically connected to the ground.
- the electrical properties between the grounding probe and a grounding terminal of the grounding system or a contact point of the ground or of an object are measured in a predetermined range of the at least one position.
- the at least one position as well as the measured electrical properties for this position are stored by means of the mobile terminal.
- a “grounding system” is to be understood as meaning at least one electrical installation which is intended to divert an electric current into the ground, for this purpose the grounding system is connected to a ground which forms part of the ground.
- the electrical properties of the grounding system - such as the electrical properties of the ground and / or the electrical connection of the grounding system with the ground - to be measured.
- a “grounding probe” is understood to be at least one mobile device which is positioned at, in particular or partially in, a ground and at a spatial position of the ground with the latter
- a grounding probe may in particular be formed as a post which is plugged into the ground at the position and has an electrical conductor which thereby electrically connects to the ground at this position, and such a grounding probe may also be a metal plate , which can be laid on the ground and so makes the electrical connection, be formed or have such a metal plate.
- a “mobile terminal” is to be understood as at least one data processing device which, in particular due to its shape, size and / or weight, is designed to be carried by a user such that the user can use the mobile terminal while carrying it or holding it, especially in his hand.
- a mobile terminal usually have a screen, which can be particularly sensitive to touch in order to allow inputs as well as an output
- a mobile terminal may have one or more communication devices for sending or receiving data,
- such a mobile terminal may be a mobile phone, a laptop, a tablet computer or a smart watch.
- a “data processing device” is understood to mean at least one device which is set up to process data, ie in particular to receive data, to store received data, to read out stored data, to receive and / or stored or read out data by means of
- a data processing device is programmable, ie, in particular that the methods for processing the data are at least partially determined by a program code and this program code
- a computer program product may include or provide such program code as computer readable applications.
- a communication device is set up for the transmission and / or reception of data, in particular for the data exchange via a data connection provided by the communication device.
- the data connection can be established via a limited (in particular an intranet) or a worldwide network of computers (in particular a WAN and / or the Internet).
- the data connection can also be established via a wireless connection, in particular a radio connection, in particular a mobile radio connection.
- the data connection can also be wired-that is, in particular-wired.
- an electrical connection for transmitting the data by means of electrical currents or voltages, which flow through an electrical conductor, can be established via a wired connection.
- the data can be transmitted through the wired connection via other signals, in particular optically, for which the wired connection can in particular have a light guide.
- different devices which are data-connected via such a non-electrical data connection can thus be electrically insulated from one another.
- An advantage of determining the at least one position by means of the mobile terminal may be, in particular, that the position determination relative to other possibilities for determining the position or for determining the distance to the grounding system - for example by means of a measuring wheel - simpler, more reliable, faster and / or perform more accurate , Also, it is possible to reduce the labor input or workload, since the mobile terminal reduces the position determination and in this way the steps to be performed by a person and / or simplified, thereby reducing human error and / or the requirements for such a person, especially as a user of the mobile terminal, may be less.
- the mobile terminal By storing the at least one position and the measured electrical property by means of the mobile terminal, it is advantageously possible to increase the reliability of the measurement of electrical properties in a grounding system and / or errors, for example when logging the respective position and / or the respective measured one electrical properties, avoid.
- the measurement of electrical characteristics may be by means of a meter separate from the mobile terminal.
- the separate measuring device can be arranged in a different position than the mobile terminal, such as in or at the grounding system, which makes measuring the electrical properties more flexible, increases the functionality in measuring and / or security for a person, which performs the measurement, can increase.
- the measuring device can be electrically insulated from the mobile terminal, which increases the reliability and / or reduce the electrical requirements for the mobile terminal - such as the requirements for its electrical safety - and thus simplify the design effort.
- a communication connection (wireless or wired) may exist between the measuring device and the mobile terminal, so that the mobile terminal can record the measurement results on the one hand via this communication connection and, on the other hand, can control the measuring process.
- a measuring device is electrically connected at least to the grounding connection and the grounding probe, as a result of which, in particular, the potential difference - ie the electrical voltage - between the grounding connection and the grounding probe can be measured, for example for the determination of the potential funnel.
- the mobile terminal may send a trigger signal in the process to cause the meter to measure the electrical characteristics.
- the measuring device is set up to receive the triggering signal and to measure the electrical properties based thereon.
- the mobile terminal may also alternatively or additionally be equipped with an auto-recognition function, which it allows the mobile terminal to automatically detect the supply of the respective test voltage or the respective test current and thus automatically start the corresponding data acquisition.
- based on is to be understood as meaning at least “conditioned by” and / or "as a function of.”
- determining one or more parameters to be determined for example for determining the potential funnel, the contact voltage and / or the step voltage , on the basis of data - in particular measured data -, an input variable, one or more preceding parameters, a control, control and / or triggering signal or a combination thereof, whereby the result, ie the determined parameters, of a part of the
- the basis on which the determination is based - in particular functionally, in particular linear or polynomial - depend, while the result does not depend on another part of the basis.Also, the dependence may be due to a part of the basis, ie in particular that this part of the Based on which parts of the base the result depends on, the same applies to the taxation or taxation of the ins special based on parameters, input variables, control signals, tripping signals or data.
- set up means that a device is not only suitable in principle to perform a specific function - for example only after a specific program code has been loaded, that is to say when the device has been programmed, or the device has been determined in a specific way
- the apparatus has already been provided with all the means to actually perform the function, but the apparatus is preferably already programmed with a program code for this function and / or already shaped and / or arranged and / or already has one Configuration that the device actually fulfills the function.
- the transmission of the triggering signal by means of the mobile terminal and the measurement by means of the measuring device based on the triggering signal can be used to control the measurement of the electrical properties via the mobile terminal.
- the measuring device is firmly positioned at one position, in particular for checking the earthing system, for example in or at the grounding system. and then only a single person positions the grounding probe at the at least one position in the vicinity of the grounding system and electrically connects it to ground at that position, and also positions the mobile terminal there and determines that position by means of the mobile terminal and triggers the measurement.
- the electrical characteristics may include electrical impedance and / or electrical potential.
- a potential funnel is determined in some variants based on the respective measured electrical properties between the ground terminal and the ground probe.
- the potential funnel can be determined from the measurement of the difference in the electrical potential between the grounding connection and the grounding probe-that is to say the electrical voltage between the grounding connection and the grounding probe-in which case the grounding system does not additionally must be affected, but the existing potential funnel can be measured at the grounding system, or a defined test current can be fed through the grounding system, resulting in an at least substantially determined by the test current potential funnel.
- test current can be varied with respect to its current, so that the potential funnel depending on different currents, ie, test currents, can be determined.
- a test current is used, which corresponds to the expected error case, but preferably a smaller amplitude - ie , in particular current - - to avoid dangerous voltages.
- An advantage of determining the potential funnel via the measurement of the electrical impedance between the grounding terminal and the grounding probe can be, in particular, that the impedance and thus the potential funnel can be determined for a predetermined frequency range, based on which measurements the behavior of the potential funnel and thus the Grounding system can be modeled for different situations in which the grounding system must divert a stream into the ground. Also, the impedance between the ground terminal and the ground probe can be determined without diverting any additional test current through the grounding system, eliminating operations, designs, and / or devices for injecting additional test current, thereby increasing work efficiency and / or safety elevated.
- the measured electrical properties may include both the electrical impedance and the electrical potential.
- a step voltage may be determined based on the electrical characteristics between the ground probe and the touch point. The advantages of determining the step voltage via the electrical impedance, the electrical potential or a combination thereof correspond to those in the determination of the potential funnel.
- a contact voltage at the earthing system can be determined based on the electrical properties between the earthing probe and the contact point.
- the contact voltage between the ground probe and the point of contact of the object which is usually located in the vicinity of the ground probe, be measured while the step voltage between a point of contact of the ground and the ground probe, which is in particular another point of contact to the ground, measured.
- a potential funnel, a step voltage, and / or a touch voltage is determined by the mobile terminal.
- the determination can be carried out directly on site and the results can be displayed to a user directly after the measurement.
- the person who checks the grounding system and using the mobile terminal a possible repeat erroneous measurement after the results are displayed, which can increase the work efficiency and / or reliability of the measurement.
- the electrical properties may be measured at multiple locations, thereby performing the method at least for a further position in the vicinity of the grounding system. In this advantageous manner, it is possible to determine the electrical properties of the earthing system for different spatial positions, which can be modeled depending on space, in particular the electrical properties.
- the potential funnel and / or the step voltage and / or the contact voltage are determined on the basis of the previously measured electrical properties for the respective positions.
- the potential funnel and / or the step voltage and / or the touch voltage can be determined by means of the mobile terminal and / or be determined by means of the mobile terminal, whether the measurement must be repeated and / or a further measurement must be performed.
- one of the evaluation criteria for determining an potential funnel may be an impedance curve which increases with increasing distance of the ground probe from the grounding system Direction changes relatively less.
- the impedance curve converges to an at least essentially fixed value and thus converges to this value when converging to this value - ie, in particular if the respectively measured values for the impedance curve are only a predetermined, in particular small, distance from the convergence value If the measuring method has ended, ie no further measurements are carried out, and / or if a measured value deviates from the expected impedance curve more than a predetermined limit value, the measurement for this position and / or this impedance value can be repeated.
- one of the evaluation criteria for determining an potential funnel may be a potential profile which increases as the distance of the ground probe from the grounding system increases along the ground Direction relatively less or at least substantially does not change.
- the potential curve converges to an at least substantially fixed value and thus converges to this value when in particular when the respectively measured values for the potential curve are only a predetermined, in particular small, distance from the convergence value have - the measuring method are terminated - so no further measurements are performed - and / or if a measured value of the expected potential curve stronger than a predetermined Limit value deviates, the measurement for this position and / or this potential value are repeated.
- one of the evaluation criteria may be a measured electrical potential between the grounding probe and the grounding terminal of the grounding system, which, in particular at a certain distance from the grounding system, reaches the ground reference potential that the ground has when it is not traversed by current .
- distances of 300 m, 1 km, 2 km or even more from the earthing system may be necessary.
- a log of the locations to which measurements have been made and / or a log of the properties being measured and, in particular, data indicating whether the electrical characteristics are present may be stored between the ground terminal and ground probe for a potential horn and the earth probe and the touch point for a tapping voltage have been stored.
- the respective protocol or a protocol which combines the positions, the respectively measured properties and / or further data can be stored by means of the mobile terminal.
- the protocol automatically - ie in particular without human intervention or operation - can be created and saved, avoiding logging errors and / or reducing the amount of work required.
- the grounding probe and the mobile terminal may be positioned at the at least one position, or may be positioned there.
- the mobile terminal determines this position via a positioning system.
- a “positioning system” is to be understood as at least one system which is set up to determine the spatial position of an object or to determine it by means of an additional position device
- the spatial position may be determined as an absolute position-that is, with absolute coordinates, in particular for this position system-or as a relative position relative to a reference point
- the position system can emit signals which are received and processed by the position device for position determination, so that the position can be determined on the basis of the received signals e be emitted from the reference point or from further reference points, wherein the reference points relative to each other and / or relative to the position of the object may be fixed or movable.
- a positioning system may be arranged to determine a position of the object based on geographic data that may be stored in a database, for example, and which serve as a reference together with geographic data measured for the position to be determined.
- a mobile terminal may have a position device which interacts with a position system external to the mobile terminal, and / or even have a position system which, in particular due to its spatial extent and / or weight, for integration into a mobile Terminal is suitable.
- a positioning system is in particular the Global Positioning System (GPS), GLONASS, Galileo, Beidou, a means for determining position based on Wi-Fi data and / or TERCOM (Terrain Contour Matching) or a corresponding system or a corresponding further development ,
- GPS Global Positioning System
- GLONASS Global Positioning System
- Galileo Galileo
- Beidou Beidou
- An advantage of the determination of the position via the position system and / or by means of the mobile terminal can lie in particular in the fact that such a position determination is easier, faster, more reliable and / or more precise compared to other possibilities for doing this - for example via a measuring wheel or the counting of steps is.
- This makes it possible to improve the measurement of electrical properties in a grounding system, in particular to check a grounding system, and in particular to increase the working efficiency and increase the quality of the measurements thus obtained. It may also be possible for only a single person - namely, in particular the user of the mobile terminal - to take the measurements.
- the method can be simplified and thus in particular avoid sources of error if the earthing probe and the mobile terminal are positioned at the at least one position or at the further position in which the earthing probe is electrically connected to the ground.
- digital cartographic information in the form of an image or map for the environment of the grounding system is displayed by the mobile terminal.
- one or more positions may be displayed at which the electrical properties have been measured and / or for measuring a potential funnel of the earthing system and / or a step voltage and / or a contact voltage at the grounding system to be measured.
- this advantageous manner it is possible in particular to understand where measurements have already been carried out. It is also advantageous to indicate at which positions still measurements must be performed. This makes it possible in particular to avoid human errors when carrying out the measurements and / or to simplify the work of the person who carries out the measurements and thus make them more efficient in particular. It is also possible to ensure that certain - for example critical - positions are reliably measured.
- positions at which a particular hazard - such as a possibly high step voltage or contact voltage - is to be expected may be measured again at intervals, for example, during a repeated inspection of the earthing system. This may be advantageous, in particular, at positions at which uneven measured values are present.
- the electrical properties could depend on the weather, in particular the moisture of the soil.
- a test current may be conducted by a meter into the grounding system or via a power line of a high voltage network or an auxiliary electrode. In this advantageous manner, a defined test situation for the earthing system can be generated.
- a meter may be electrically connected to at least the ground terminal of the grounding system and a power line of a high voltage network. As a result, in particular, a test current can be fed from the power line into the grounding system via its ground connection.
- this test current to be fed in can be supplied via the power line from a counterelectrode, in particular a further grounding system, which extends from the one to the other
- a test of the earthing system that is independent of the high-voltage network can be carried out and thus in particular the safety and reliability of the test can be increased.
- a greater spatial distance between the grounding system to be tested and the counterelectrode makes it possible to avoid intersecting potential funnels and thus a possible falsification of the measurements and / or an occurrence of step voltages, which can be dangerous for persons.
- a test current can be conducted via a power line of a high voltage network from another grounding system with a predetermined spatial distance in the ground terminal.
- measuring the electrical characteristics to determine a step voltage or voltage at grounding may be done by a handheld meter.
- this hand-held measuring device is electrically connected at least to the earthing probe and the contact point or is electrically connected in the method, in particular automatically or by a person who performs the measurements.
- the grounding probe may be formed as a metallic pile or as a metal plate.
- the hand-held measuring device may have a measuring sensor, by means of which the electrical connection of the hand-held measuring device to the contact point is produced.
- An advantage of the hand-held measuring device can be, in particular, that the person can carry the hand-held measuring device for carrying out the measurements in his hand, so that it is easier to carry out measurements at different positions and / or to avoid longer measuring cables.
- the reliability can advantageously be increased if, in some variants, an additional measuring device which feeds a test current into the grounding system is arranged directly at or in the earthing system, while the person carries out the respective measurements by means of the hand-held measuring device and / or the additional measuring device optionally controls together with the hand-held measuring device for the measurement by means of the hand-held measuring device.
- the mobile terminal, the hand-held measuring device and / or the earthing probe can advantageously be combined with one another and, in particular, connected to one another in such a way that they can be positioned together, in particular as a physical unit.
- the hand-held measuring device may in some embodiments be designed in accordance with the measuring device or correspond to the measuring device, wherein the hand-held measuring device is mobile, in particular portable by a user.
- the hand-held measuring device may in particular be set up to receive a trigger signal from the mobile terminal and / or to send measured values to the mobile terminal.
- a second aspect of the invention relates to a computer program product for measuring electrical properties in a grounding system.
- This computer program product has or provides computer readable instructions which, when executed on a mobile terminal, cause the mobile terminal to perform at least those parts of the method according to the first aspect of the invention which are carried out by means of a mobile terminal according to the first aspect of the invention ,
- the computer program product may include a nonvolatile data storage, in particular a nonvolatile data carrier such as a CD-ROM, a hard disk or a USB memory stick, on which the computer readable instructions are stored.
- the computer-readable instructions can be physically transported and / or transmitted by means of this data memory.
- the computer program product comprises a data processing device configured to provide the computer readable instructions.
- the data processing device can be set up to transmit the computer-readable instructions by means of a data connection to a mobile terminal on which the computer-readable instructions are to be executed.
- the computer-readable instructions can be provided to the mobile terminal for execution regardless of physical transport.
- a third aspect of the invention relates to a mobile terminal for a user, in particular a tablet computer, for measuring electrical properties in a grounding system, which is connected to a ground.
- the mobile terminal includes a positioning device, a communication interface for receiving data indicating electrical characteristics, and a data storage device.
- the mobile terminal is arranged to determine at least one position at which a grounding probe is electrically connected to the ground by means of the positioning device.
- the mobile terminal is adapted to receive, by means of the communication interface, data indicative of electrical characteristics measured between the ground probe and a ground terminal of the grounding system or a ground contact point or an object in a predetermined range of the at least one position.
- the mobile terminal is set up to store, by means of the data storage device, the at least one position as well as the data which characterize the measured electrical properties for this position.
- a “data storage device” is a device for storing data, which is in particular for forming a data connection with a further device, in particular a data processing device, or with other parts of a device which also has the data storage device. set up and / or has a data connection with it.
- data can be transmitted from the further device or the further parts to the data storage device for storage and / or for retrieving stored data they can be transmitted from the data storage device to the further device or to the further parts.
- the data storage device comprises at least one non-volatile data memory.
- the data storage device comprises at least one volatile electrical data storage.
- the communication interface comprises or at least substantially consists of a communication device.
- the mobile terminal is set up to receive a data signal from a measuring device by means of the communication device, wherein the data signal identifies the electrical properties measured by means of this measuring device.
- the measured electrical properties can be automatically transferred from the measuring device to the mobile terminal and thus in particular increase the working efficiency and / or avoid errors in a manual transmission.
- the communication interface includes or at least substantially includes input to the user.
- the mobile terminal is set up to receive inputs from the user with regard to the measured electrical properties and thus to receive, based on the inputs of the user, the data which characterize the measured electrical properties.
- the measured electrical properties can thus be received, for example even when data signals - for example due to electrical (interference) fields, which in the grounding system and / or at a High-voltage system with this grounding system occur - be disturbed and thus a data transfer is difficult or impossible.
- the communication interface may include, or at least substantially consist of, a communication device.
- the mobile terminal is set up to send a triggering signal to a measuring device by means of the communication device in order to cause it to measure the electrical properties on the basis of the triggering signal.
- automate the measuring process which makes it easier to carry out the measurements, to increase the working efficiency and / or to increase the reliability when checking the grounding systems.
- a fourth aspect of the invention relates to a mobile terminal, in particular a tablet computer, which is arranged to execute the computer-readable instructions of the computer program product according to the second aspect of the invention.
- this mobile terminal may be configured according to the third aspect of the invention.
- the possible advantages already mentioned above as well as embodiments, developments or variants of the preceding aspects of the invention also apply correspondingly to the mobile terminal according to the invention according to the fourth aspect of the invention.
- a fifth aspect of the invention relates to a measuring system for measuring electrical properties in a grounding system which is connected to a ground.
- the measuring system includes a mobile terminal according to the third or fourth aspect of the invention, a grounding probe electrically connectable to the ground at at least one position in an environment of the grounding system, and a measuring device for measuring the electrical characteristics between the grounding probe and a ground terminal of the grounding system or a contact point of the ground or an object in a predetermined area of the at least one position.
- a sixth aspect of the invention relates to a measuring system for measuring electrical properties in a grounding system, which is set up to carry out a method according to the first aspect of the invention.
- this measurement system may be configured in accordance with a measurement system of the fifth aspect of the invention.
- a seventh aspect of the invention relates to a grounding probe.
- This earthing probe has a holder for a mobile terminal according to the third or fourth aspect of the invention.
- the grounding probe is arranged to be positioned at least one position on a ground and there electrically connected to the ground.
- the holder is arranged to hold the mobile terminal so that it can be positioned and / or transported together with the grounding probe in this position as a physical unit.
- An advantage of the grounded probe with holder can be, in particular, that the grounding probe can be positioned together with a mobile terminal at the at least one position, which in particular reduce the work steps and avoid possible errors due to different positions of the grounding probe and the mobile terminal.
- the grounding probe may include a carrying handle.
- the carrying handle may be made of an electrically insulating material or may be electrically insulated from other components of the earthing probe, which may in particular increase safety.
- Some embodiments of the holder can be made of an electrically insulating material or have an insulation device for electrical insulation of other components of the ground probe, which in particular increase safety and / or damage to the mobile terminal can be avoided due to currents or voltages.
- the mount may be configured to include other components of the grounding probe, in particular one or more parts, by which the electrical connection to the ground is made, or a handle of the grounding probe, and the mobile terminal in a predetermined or adjustable spatial arrangement, position and / or orientation relative to each other.
- the spatial arrangement, position and / or orientation of the mobile terminal relative to the grounding probe or components thereof or to make it adjustable for a user whereby in particular the ease of use and / or the working efficiency can be increased.
- the mobile terminal may be at least substantially cuboidal.
- a substantially cuboid mobile terminal may have a longitudinal axis and a length along this longitudinal axis between 5 cm and 25 cm.
- an at least substantially cuboid mobile terminal may have a transverse axis and be between 2 cm and 15 cm wide along this transverse axis.
- an at least substantially cuboid mobile terminal device may have a vertical axis and have a height between 1 mm and 3 cm along this vertical axis.
- the holder of the grounding probe may be configured to physically, in particular positively and / or non-positively hold the mobile terminal.
- the holder may in particular comprise one or more holding elements, which touch the mobile terminal, in particular when it is arranged in a receiving area of the holder, with a predetermined force or at least partially and thus hold positively and / or positively.
- the mobile terminal comprises a magnetizable metal area or a magnet which is particularly intended to interact with a mount for such a mobile terminal so that such a mobile terminal can be magnetically attracted between the mount and the magnet Area is held with the magnetizable metal or magnet.
- the grounding probe mount may include a magnet and / or magnetizable metal that interacts with a corresponding magnet or magnetizable metal of the mobile terminal such that the mobile terminal is held by the magnetic attraction.
- Methods, devices and systems according to embodiments as well as subsequent exemplary embodiments make it possible in particular to carry out measurements of electrical properties in a grounding system, in particular checking a grounding system, more efficiently, more safely, for example for a person performing the measurements performs, and / or to make more reliable.
- some embodiments and / or embodiments of the method can be carried out at least partially automated.
- a device or a system or a part thereof can be set up to execute process parts automatically, or to automatically execute process parts by means of these devices, systems and / or parts thereof.
- “automatically” means at least that a part of a method, in particular a method step, and / or a functionality of a device can be executed without human intervention.
- FIG. 1 shows a method for measuring electrical properties in a grounding systems according to an embodiment.
- FIG. 2 shows a computer program product for measuring electrical properties in a grounding system according to an embodiment
- FIG. 3 shows a mobile terminal for measuring electrical properties in a grounding system according to an embodiment
- FIG. 5 shows a measuring system for measuring electrical properties in a grounding system according to an embodiment, together with a grounding system and further parts of a high-voltage network.
- connections and couplings between functional units and elements may also be implemented as indirect connections or couplings.
- data connections can be wired or wireless, that is to say in particular as a radio connection.
- certain connections such as electrical connections, such as for energy supply, for the sake of clarity, not be shown.
- method 100 includes method steps 122, 124, 126, 128, 130, 132, 134, 136, 138, 140, and 142, and in some variants method step 120 and / or method step 144.
- the method 100 begins at the start of the process 102 and ends at the end of the process 104, wherein one or more method steps, in particular a sequence of method steps, and preferably the entire method can be carried out repeatedly.
- a measuring device in method step 120, can be arranged at or spatially in the grounding system and the measuring device can be electrically connected at one of its terminals to a grounding connection of the grounding system, a grounding probe and in particular also to a power line of a high-voltage network, wherein preferably the power line additionally is electrically connected to another grounding system, which has a predetermined spatial invention of the grounding system.
- the meter may be a hand-held meter or a portable meter.
- the spatial distance of the two grounding systems can be chosen so that even with a maximum expected fault current between the two grounding systems each on a soil on which the grounding systems are installed, no electrical voltages and / or currents occur, the people, animals , Equipment or the equipment itself.
- the measuring device may already be positioned at or in the earthing system and / or already permanently installed there. Also, at least one, several or all electrical connections can already be made.
- a mobile terminal and the grounding probe are positioned at at least one position in an environment of the grounding system and the grounding probe is electrically connected there to the ground to which the grounding system is connected. In this case, the security can advantageously be increased by the mobile terminal being electrically isolated from the measuring device.
- this at least one position is spatially determined by means of the mobile terminal.
- the position can be determined in particular by means of GPS.
- the mobile terminal sends a trigger signal to cause the meter to measure the electrical characteristics.
- the electrical potential between the earthing probe and the earthing connection of the earthing system can be measured as an electrical characteristic.
- the exemplary embodiment is described below for measuring the electrical potential-that is to say, in particular the electrical voltage-between the earthing probe and the earthing connection of the earthing system. It is understood that correspondingly also further electrical properties such as, in particular, a step voltage or a contact voltage can be measured and further processed.
- a test current is fed by means of the measuring device via the earth connection of the grounding system for measuring the electrical potential between the grounding connection and the grounding probe.
- the test current can be conducted in particular via the power line of the high-voltage network and preferably serve as the high-voltage network or - particularly advantageous for safety - the other grounding system as a current sink or current source for the test current.
- the electrical potential between the grounding terminal and the grounding probe is measured. In particular, the electrical potential is measured as a function of the test current.
- the measuring device transmits a data signal-preferably by cable, for example by means of glass fiber, or wirelessly-which identifies the measured electrical potential-in particular as a function of the test current.
- the mobile terminal receives this data signal.
- the mobile terminal determines a potential funnel based on the measured electrical potential or supplements an already determined potential funnel by the currently measured value for the electrical potential between the grounding probe and the grounding connection.
- the values for the electrical potential at this position as well as the position and preferably also potential funnel data which characterize the potential funnel determined with the respectively measured electrical potentials are stored by means of the mobile terminal.
- a method condition 1 1 1 of the method 100 determines whether the measurement must be repeated at the previous position. For this purpose, in particular the measured electrical potential with the expected electrical potential, which can be calculated for example by means of a simulated or based on previous measurements potential funnel, compared and if the deviation exceeds a predetermined threshold, in particular more than 500%, preferably already more than 100%, more preferably more than 50%, this criterion is defined as fulfilled.
- a predetermined threshold in particular more than 500%, preferably already more than 100%, more preferably more than 50%
- the mobile terminal in some variants, the setting, in particular automatically execute. If the measurement has to be repeated, the mobile terminal issues this in method step 138. In addition, the method steps are executed at least from method step 126 again.
- method step 122 and / or method step 124 may also be performed again, such as when the positioning of the ground probe and / or the mobile terminal has been faulty and / or the electrical connection between the ground probe and the ground is faulty at that position has been. Also, it may be necessary to re-execute the two process steps 122 and 124 if the ground probe has been electrically connected to the ground at a wrong position. Execution of method step 124 may also be required if the position determination initially failed.
- a calculated potential profile can serve as an evaluation criterion, which can be simulated in particular on the basis of theoretical assumptions and / or can be calculated by means of the previously measured measured values and on the basis of the determined potential funnel.
- a potential curve of an potential funnel decreases with increasing distance of the grounding probe from the grounding system along one direction and also changes relatively less with increasing distance, so that the electrical potential converges towards a limit value.
- an evaluation criterion may be the absolute distance of the ground probe be from the grounding system.
- carrying out the measurements ie in particular the method, can be ended if this distance is at least 5 km, in particular already at least 3 km and in particular already at least already 2 km.
- this is output in method step 140 by means of the mobile terminal.
- method step 142 the mobile terminal and the grounding probe are positioned at a further position and there the grounding probe is electrically connected to the ground.
- the method 300 is additionally executed starting from the method step 124-the determination of the position-for this further position. If no further measurement has to be carried out, in some variants of the exemplary embodiment, in a method step 144, a protocol of the positions to which the measurement has been made and of the respectively measured electrical potential can be stored. In this case, the mobile terminal can in particular automatically execute the storage of the protocol. After saving the protocol, the method 300 may be terminated or, especially for an additional protocol, re-executed.
- FIG. 2 shows a computer program product 200 for measuring electrical properties in a grounding system according to an embodiment of the present invention.
- the computer program product 200 comprises a CD-ROM on which computer-readable instructions are stored.
- the CD-ROM includes a carrier disk 202 which is coated with a metal 204 for storage of data.
- the data 206 is encoded.
- the data consist of the computer-readable instructions, have these, or encode them, in particular, among other data, for example for a file system and / or for error correction of the stored data. In doing so, when executed on a mobile terminal, these computer-readable instructions cause it to perform at least those parts of the method for measuring electrical characteristics in a grounding system, in particular according to the previous method 100, which can be performed by a mobile terminal or be executed.
- a mobile terminal 300 for a user and for measuring electrical characteristics in a grounding system, in particular by this user, according to an embodiment of the present invention is shown schematically.
- the mobile terminal 300 is designed as a tablet computer.
- the mobile terminal 300 comprises a data processing device 310, a communication interface 320, a data storage device 330 and a position device 340.
- the data processing device 310 may be designed in particular as a central processor unit (CPU), and thus - in particular with other components of the mobile terminal 300 - perform certain functions based on computer-readable instructions, for which purpose the mobile terminal 300 is set up.
- the communication interface 320 has or at least essentially consists of a communication device 322 and a user interface 324.
- the user interface 322 may in particular be designed as a touch-sensitive screen.
- the communication device is preferably set up for radio-based data connections.
- the positioning device 340 may at least substantially consist of or comprise a GPS receiver.
- a GPS receiver advantageously makes it possible to determine positions via the Global Positioning System (GPS), ie satellite-supported and almost worldwide.
- the mobile terminal 300 is set up to determine, by means of the positioning device 340, at least one position at which a grounding probe is electrically connected to the ground.
- the mobile terminal may receive both by means of the communication device 322 and by means of the user interface 324 data indicative of electrical characteristics measured between the grounding probe and a ground terminal of the grounding system or a ground contact point or an object in a predetermined range of the at least one position have been.
- the mobile terminal 300 can in particular receive data signals-preferably radio signals-from a measuring device which has measured the electrical properties and / or receive from the user via the user interface 324 inputs from a user which characterize the measured electrical properties.
- the mobile terminal 300 is arranged to store, by means of the data storage device 330, the at least one position as well as the data which characterize the measured electrical properties for this position.
- grounding probe 400 includes a handle 410, a metal bar 420, and a mobile terminal mount 430, particularly for a mobile terminal 300 according to the previous embodiment of FIG. 3.
- the metal rod 420 may include a thread 422 by means of which the metal rod may be screwed into the ground to establish an electrical connection.
- the handle is advantageously designed as a crankshaft, so that the metal rod 420 can be screwed by turning this crankshaft into the ground.
- the metal bar 420 may be cone-shaped or have a cone-shaped element.
- the metal rod 420 can be pointed at the end opposite the handle 410 or have a tip, in particular the conical element, whereby the metal rod 420 can pierce in the direction of this end more easily in the ground and / or can drive and thus in particular the Electrical connection of the grounding probe to the ground when making the measurements - in particular the checking of the grounding system - easier.
- the handle 420 may be made of, consist of, or at least electrically insulated from the metal bar 420 from an electrically insulating material.
- the grounding probe 400 can also have an electrical connection 402, which is electrically connected to the metal rod 420.
- the holder 430 For physically holding the mobile terminal, the holder 430 has two holding elements, which can be designed as gripping elements 434 and 436, wherein at least one of the gripping elements on a mounting base 432 of the holder 430 attached, in particular movably mounted.
- this gripping element can be moved so that the mobile terminal is clamped in a receiving area between the two gripping elements 434, 436 and thus held positively and / or positively.
- the handle 410 may include a head 412 for a hammer so that the head 412 of the handle 410 may be hit with the hammer to drive the metal rod 420 into the ground.
- a handle 410 designed as a crankshaft can be arranged relative to the holder 430 such that the handle 410 protects the holder 430 from impacts that miss the head 412.
- FIG. 5 schematically shows a measuring system 1 according to an embodiment of the present invention for measuring electrical properties in a grounding system.
- the grounding system and other components of a high voltage network in particular a power pole at the grounding system, another power pole together with another grounding system and a power line, which extends from the other grounding system on the two power poles, schematically indicated as dashed lines, said in particular, these are not part of the measuring system.
- these may be configured to perform the measurement in a particular way, in particular, for example, the power line may be electrically connected to the other grounding system.
- the measuring system 1 has a measuring device 10, a mobile terminal 300 and a grounding probe 400.
- electrical connections between these components preferably by means of insulated cables, each be components of the measuring system 1.
- the mobile terminal 300 may in particular be designed and / or set up according to one of the preceding embodiments, which to execute computer-readable instructions from a computer program product according to one of the preceding embodiments.
- the grounding probe 400 may be designed according to one of the preceding embodiments.
- the earthing probe 400 as shown in Fig. 5, a metal plate 440 for establishing an electrical connection to the ground and a holder 430 and an electrical connection 402, which is electrically connected to the metal plate 440 and by means of which further Components of the measuring system 1, in particular the measuring device 10, can be electrically connected, for example via cable.
- the measuring device has at least three electrical connections 12, 14 and 16.
- the meter 10 is configured to measure electrical characteristics between the ground probe 400 and a ground terminal of the grounding system. Specifically, as illustrated in FIG. 5, the grounding probe 400 may be electrically connected to the meter 10 via the electrical terminals 402 and 16 by means of a cable (shown in FIG. 5 as a dotted curve).
- the measuring device 10 can be electrically connected to a grounding connection of the grounding system by means of the electrical connection 12 and a further cable.
- the measuring device 10 can be electrically connected by means of the electrical connection 14 and via a power line with another grounding system or be.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT508662017 | 2017-10-11 | ||
PCT/EP2018/076159 WO2019072569A1 (de) | 2017-10-11 | 2018-09-26 | Verfahren, mobiles endgerät und messsystem zur messung elektrischer eigenschaften einer erdungsanlage |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3695236A1 true EP3695236A1 (de) | 2020-08-19 |
Family
ID=63683911
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18778476.4A Withdrawn EP3695236A1 (de) | 2017-10-11 | 2018-09-26 | Verfahren, mobiles endgerät und messsystem zur messung elektrischer eigenschaften einer erdungsanlage |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3695236A1 (de) |
WO (1) | WO2019072569A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021120050A1 (de) | 2021-08-02 | 2023-02-02 | Ads-tec Energy GmbH | Mobile elektrische Energiebereitstellungsvorrichtung |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2325661A1 (de) * | 2009-11-24 | 2011-05-25 | Fluke Corporation | Verfahren zur Messung des Erdwiderstands eines Mastes mit einer einzigen Klemme |
US8390299B2 (en) * | 2009-11-24 | 2013-03-05 | Fluke Corporation | Earth ground tester with remote control |
JP2014163800A (ja) * | 2013-02-25 | 2014-09-08 | Hioki Ee Corp | 接地抵抗計測支援装置、接地抵抗計測支援方法および接地抵抗計測支援プログラム |
CN103529305A (zh) * | 2013-10-25 | 2014-01-22 | 国家电网公司 | 一种电力设备接地网接地电阻测试辅助系统 |
US9444232B2 (en) * | 2014-07-03 | 2016-09-13 | Centech Services, Inc. | Site grounding and bonding system |
CN104505610A (zh) * | 2014-10-30 | 2015-04-08 | 成都峰达科技有限公司 | 一种便利的接地棒 |
CN105467220A (zh) * | 2015-11-20 | 2016-04-06 | 国网山东省电力公司电力科学研究院 | 一种便携式接地电阻测试仪 |
CN106025597A (zh) * | 2016-06-23 | 2016-10-12 | 成都科创佳思科技有限公司 | 一种接地棒 |
-
2018
- 2018-09-26 WO PCT/EP2018/076159 patent/WO2019072569A1/de unknown
- 2018-09-26 EP EP18778476.4A patent/EP3695236A1/de not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
WO2019072569A1 (de) | 2019-04-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3602089B1 (de) | Verfahren zur feinortung eines kabelfehlers eines erdverlegten kabels | |
EP2669694B1 (de) | Verfahren und Vorrichtung zum Lokalisieren eines Kabelfehlers eines verlegten Kabels | |
EP1965227B1 (de) | Verfahren und einrichtung zur marinen elektrischen erkundung von öl- und gasfeldern | |
DE10045439A1 (de) | Erdungsanlagen-Überwachungseinrichtung | |
DE102016102607A1 (de) | Scananordnung und Verfahren zum Scannen eines Objektes | |
DE102006047960A1 (de) | Echtzeit-Mehrpunkt-Erdungswiderstands-Überwachungsgerät | |
DE102010050785B4 (de) | Verfahren zur Verifizierung einer elektrischen Verbindung in einer Energieerzeugungsanlage | |
EP3139188B1 (de) | Verfahren und vorrichtung zur isolationsfehlersuche mit adaptiver prüfstrom-ermittlung | |
DE102013004561A1 (de) | Eine vorrichtung zum erkennen einer krafteinwirkung und ein verfahren zum erkennen einer krafteinwirkung | |
EP3902080A1 (de) | Verfahren zum überwachen eines elektrischen versorgungsnetzes | |
EP3546987B1 (de) | Verfahren zur feinortung eines kabelfehlers eines erdverlegten kabels | |
EP3695236A1 (de) | Verfahren, mobiles endgerät und messsystem zur messung elektrischer eigenschaften einer erdungsanlage | |
DE102015102636B4 (de) | Prüfkammer und Verfahren für die EMV-Meßprüfung | |
EP1239292A2 (de) | Einrichtung zur Unterstützung der Messung des Erdwiderstandes | |
EP2762878B1 (de) | Verfahren und Vorrichtung zur gesteuerten Beschaffenheitsuntersuchung von säulenförmigen oder zylindrischen Abschnitten von Körpern | |
EP2859374A1 (de) | Vorrichtung zum kalibrieren eines leistungsmesssystems für leistungstransformatoren | |
DE102012000293A1 (de) | Etikett zur Kennzeichnung eines elektrischen Bauteils und/oder Leiters, Messsonde zur Wartung und/oder Funktionsüberprüfung von elektrischen Schaltungsanordnungen bzw. -anlagen, Vorrichtung zum Lesen eines auf einem Etikett enthaltenen Codes und Verfahren zur Überprüfung von elektrischen Schaltungsanordungen | |
DE60131368T2 (de) | Verfahren und vorrichtung zur überwachung eines telekommunikationskabels | |
DE102014112238A1 (de) | Vorrichtung und Verfahren zur Drehbefestigung | |
DE102014104714A1 (de) | Verfahren zum Lageabgleich mindestens eines physischen Bauteils oder einer physischen Bauteilegruppe mit einem virtuellen Modell des Bauteils oder der Bauteilgruppe | |
EP4018092B1 (de) | Verfahren zum überprüfen eines blitzschutzsystems in einem windenergieanlagen-rotorblatt | |
DE202018102939U1 (de) | System für die Überwachung und Steuerung der Elektrozaunanlagen | |
DE898785C (de) | Verfahren und Vorrichtung zur Bestimmung der von einem Bohrloch durchschlagenen Bodenschichten | |
EP4105667B1 (de) | Verfahren zum teilentladungsmessen zumindest eines mittelspannungskabels eines mittelspannungsnetzes | |
WO2021219210A1 (de) | Schaltvorrichtung zum ein- oder ausschalten eines füllstandmessgerätes |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20200330 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: PIKISCH, MORITZ |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20221125 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20230323 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230324 |