Method and device for monitoring a high-voltage electric current transmission line
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
G01R-031/08
H02J-003/00
H02J-013/00
출원번호
14356268
(2012-10-30)
등록번호
10345364
(2019-07-09)
우선권정보
EP-11306435 (2011-11-04)
국제출원번호
PCT/FR2012/052506
(2012-10-30)
국제공개번호
WO2013/064778
(2013-05-10)
발명자
/ 주소
Stevenin, Pierre
출원인 / 주소
RTE RESEAU DE TRANSPORT D'ELECTRICITE
대리인 / 주소
Young & Thompson
인용정보
피인용 횟수 :
0인용 특허 :
0
초록▼
A method for monitoring a high-voltage electric-current transmission line includes: determining (100) the ampacity (A) of the high-voltage line from a distribution temperature, conduction parameters and meteorological parameters; measuring (202) the current strength effectively transmitted by the hi
A method for monitoring a high-voltage electric-current transmission line includes: determining (100) the ampacity (A) of the high-voltage line from a distribution temperature, conduction parameters and meteorological parameters; measuring (202) the current strength effectively transmitted by the high-voltage line using at least one sensor; and monitoring (204), by a monitoring device connected to the sensor, an excess of ampacity (A) by the current strength measured. The determining (100) of the ampacity (A) includes: selecting (108, 110, 112, 114, 116) a value of this ampacity (A) by optimizing a probability of exceeding the distribution temperature, with this probability defined based on a joint probability model (P) of operating current strength and temperature that depends on meteorological parameters; and recording (118) the selected ampacity value in a storage unit of the monitoring device.
대표청구항▼
1. A method, carried out by a monitoring device and at least one sensor in communication therewith, for monitoring a high-voltage electric-current transmission line, comprising: prior determining, at the monitoring device, of an ampacity of the high-voltage line from a distribution temperature that
1. A method, carried out by a monitoring device and at least one sensor in communication therewith, for monitoring a high-voltage electric-current transmission line, comprising: prior determining, at the monitoring device, of an ampacity of the high-voltage line from a distribution temperature that indicates an operating temperature limit of the high-voltage line, conduction parameters of the high-voltage line, and meteorological parameters, the prior determining of the ampacity comprising at least selecting a value of the ampacity by optimizing a probability of exceeding the distribution temperature,where the probability is defined based on a joint probability model of i) operating current strength (I) of the high-voltage line exceeding the distribution temperature, andwhere the joint probability model depends on meteorological parameters (θ),said optimizing including steps of iteratively approaching a predetermined limit value of said probability by iteratively varying the ampacity and recording the selected ampacity value in a storage unit of the monitoring device,where the joint probability model is Pθ(T>Trep,I),Pθis the joint probability depending on the meteorological parameters θ,T is the operating temperature of the high-voltage line,Trep is the distribution temperature, andI is the operating current strength of the high-voltage line;measuring, by use of at least one sensor (16) arranged on the high-voltage line and in communication with the monitoring device, a current strength effectively transmitted by the high-voltage line;monitoring, by the monitoring device by way of communication with the sensor, the current strength measure by the sensor, and determining whether the measure current strength exceed the selected ampacity stored in the storage unit of the monitoring device; andin the event that the measured current strength is determined to exceed the selected ampacity for a predetermined duration, cutting off current on the high-voltage line. 2. The method for monitoring a high voltage electric-current transmission line as claimed in claim 1, wherein the steps of iteratively approaching in the selecting of an ampacity value comprise: initializing the ampacity to a first value, andperforming the following loop steps at least one time: a1) estimating the probability of exceeding the distribution temperature for the given ampacity value,a2) comparing the estimated probability with the limit value, anda3) updating the ampacity value according to the comparison of step a2). 3. The method for monitoring a high-voltage electric-current transmission line as claimed in claim 2, wherein the updating of the ampacity value comprises increasing the ampacity value upon a determination that the estimated probability is greater than the limit value. 4. The method for monitoring a high-voltage electric-current transmission line as claimed in claim 3, wherein the loop steps a1, a2 and a3 further comprise a stoppage criterion of i) a maximum number of repetitions of the loop steps a1, a2 and a3 or ii) a difference between the estimated probability and the limit value being less than a predetermined threshold when the estimated probability is less than the limit value. 5. The method for monitoring a high-voltage electric-current transmission line as claimed in claim 4, wherein the updating of the ampacity value comprises an application of convergence by dichotomy. 6. The method for monitoring a high-voltage electric-current transmission line as claimed in claim 3, wherein the updating of the ampacity value comprises an application of a convergence by dichotomy. 7. The method for monitoring a high-voltage electric-current transmission line as claimed in claim 2, wherein the updating of the ampacity value comprises an application of convergence by dichotomy. 8. The method for monitoring a high-voltage electric-current transmission line as claimed in claim 2, wherein the joint probability model of the operating temperature and the operating current strength exceeding the distribution temperature is defined as the product, integrated over a plurality of current strengths between zero and the ampacity, of a probability, depending on the meteorological parameters, that the operating temperature is higher than the distribution temperature for a given current strength with a probability that the current strength is reached in light of the ampacity. 9. The Method for monitoring a high-voltage electric-current transmission line as claimed in claim 2, wherein, in a transient thermal imbalance regime between heating and cooling powers of an overhead conductor of the high-voltage line, the probability of exceeding the distribution temperature is more precisely defined on the basis of the joint probability model of the operating current strength and the operating temperature exceeding the distribution temperature corrected at least by the following two multiplicative factors: a factor quantifying a probability of a defect appearing in the high-voltage line, anda factor quantifying a probability of the duration of maximum overload of the high-voltage line. 10. The method for monitoring a high-voltage electric-current transmission line as claimed in claim 1, wherein the joint probability model of the operating temperature and the operating current strength exceeding the distribution temperature is defined as the product, integrated over a plurality of current strengths between zero and the distribution temperature for a given current strength with a probability that the current strength is reached in light of the ampacity. 11. The method for monitoring a high-voltage electric-current transmission line as claimed in claim 10, wherein the probability, depending on the meteorological parameters, that the operating temperature is higher than the distribution temperature for a given operating current strength is calculated on the basis of a model established by stochastic sampling using samples of random meteorological variables and a predetermined transfer function, connecting the meteorological parameters and conduction parameters of the high-voltage line to the operating temperature of the high-voltage line. 12. The method for monitoring a high-voltage electric-current transmission line as claimed in claim 1, wherein, in a transient thermal imbalance regime between heating and cooling powers of an overhead conductor of the high-voltage line, the probability of exceeding the distribution temperature is more precisely defined on the basis of the joint probability model of the operating current strength and the operating temperature exceeding the distribution temperature corrected at least by the following two multiplicative factors: a factor quantifying a probability of a defect appearing in the high-voltage line, anda factor quantifying a probability of the duration of maximum overload of the high-voltage line. 13. A non-transitory computer program recorded on a computer readable medium, that when executed by a processor of a computer, causes the computer to execute the steps of claim 1. 14. A device for monitoring a high-voltage electric-current transmission line, comprising: a computer, incorporating a processor and a memory, the memory having recorded thereon program code that, upon execution by the processor, causes the computer to determine a value of an ampacity of the high-voltage line from a distribution temperature indicative of an operating temperature limit of the high-voltage line, conduction parameters of the high-voltage line and meteorological parameters;a storage unit that stores the determined ampacity value;a data transmission interface that receives, from at least one sensor (16) arranged on the high-voltage line, measurement data of a current strength effectively transmitted by the high-voltage line generated by said least one sensor (16); anda detector that determines an exceeding of the ampacity (A) by the current strength based on the received measurement data from the at least one sensor,the storage unit also storing parameters of a joint probability model of i) operating current strength of the high-voltage line and ii) operating temperature of the high-voltage line exceeding the distribution temperature, where the joint probability model depends on meteorological parameters, wherein the joint probability model is Pθ(T>Trep,I), where Pθis the joint probability depending on the meteorological parameters θ,T is the operating temperature of the high-voltage line,Trep is the distribution temperature, andI is the operating current strength of the high-voltage line,wherein the program code further causes the computer to: determine the ampacity of the high-voltage line by selecting a value of the ampacity by optimizing a probability of exceeding the distribution temperature, with the probability defined based on the stored probability model Pθ(T>Trep,I), said optimizing including steps of iteratively approaching a predetermined limit value of said probability by iteratively varying the ampacity and recording of the selected ampacity value in a storage unit of monitoring device, andin the event that the measured current strength is determined to exceed the selected ampacity for a predetermined duration, causing current on the high-voltage line to be cut off. 15. A method, carried out by a monitoring device and at least one sensor in communication therewith, for monitoring a high-voltage electric-current transmission line, comprising: prior determining, at the monitoring device, of an ampacity of the high-voltage line from a distribution temperature that indicates an operating temperature limit of the high-voltage line, conduction parameters of the high-voltage line, and meteorological parameters, the prior determining of the ampacity comprising at least selecting a value of the ampacity by optimizing a probability of exceeding the distribution temperature,where the probability is defined based on a joint probability model of i) operating current strength (I) of the high-voltage line and ii) operating temperature (T) of the high-voltage line exceeding the distribution temperature, andwhere the joint probability model depends on meteorological parameters (θ),said optimizing including steps of iteratively approaching a predetermined limit value of said probability by iteratively varying the ampacity and recording the selected ampacity value in a storage unit of the monitoring device,where the joint probability model is Pθ(T>Trep,I),Pθis the joint probability depending on the meteorological parameters θ,T is the operating temperature of the high-voltage line,Trep is the distribution temperature, andI is the operating current strength of the high-voltage line;measuring, by use of at least one sensor (16) arranged on the high-voltage line and in communication with the monitoring device, a current strength effectively transmitted by the high-voltage line;monitoring, by the monitoring device by way of communication with the sensor, the current strength measured by the sensor, and determining whether the measure current strength exceeds the selected ampacity stored in the storage unit of the monitoring device; andin the event that the measured current strength is determined to exceed the selected ampacity for a predetermined duration, actuating either of a visual or an audible alarm. 16. The method for monitoring a high-voltage electric-current transmission line as claimed in claim 15, wherein the steps of iteratively approaching in the selecting of an ampacity value comprise:initializing the ampacity to a first value, andperforming the following loop steps at least one time: a1) estimating the probability of exceeding the distribution temperature for the given ampacity value,a2) comparing the estimated probability with the limit value, anda3) updating the ampacity value according to the comparison of step a2). 17. The method for monitoring a high-voltage electric-current transmission line as claimed in claim 15, wherein the joint probability model of the operating temperature and the operating current strength exceeding the distribution temperature is defined as the product, integrated over a plurality of current strengths between zero and the ampacity, of a probability, depending on the meteorological parameters, that the operating temperature is higher than the distribution temperature for a given current strength with a probability that the current strength is reached in light of the ampacity. 18. The method for monitoring a high-voltage electric-current transmission line as claimed in claim 15, wherein, in a transient thermal imbalance regime between heating and cooling powers of an overhead conductor of the high-voltage line, the probability of exceeding the distribution temperature is more precisely defined on the basis of the joint probability model of the operating current strength and the operating temperature exceeding the distribution temperature corrected at least by the following two multiplicative factors: a factor quantifying a probability of a defect appearing in the high-voltage line, anda factor quantifying a probability of the duration of maximum overload of the high-voltage line. 19. a non-transitory computer program recorded on a computer readable medium, that when executed by a processor of a computer, causes the computer to execute the steps of claim 15. 20. A device for monitoring a high-voltage electric-current transmission line, comprising: a computer, incorporating a processor and a memory, the memory having recorded thereon program code that, upon execution by the processor, causes the computer to determine an ampacity of the high-voltage line from a distribution temperature indicative of an operating temperature limit of the high-voltage line, conduction parameters of the high-voltage line and meteorological parameters;a storage unit that stores a determined ampacity value;a data transmission interface that receives, from at least one sensor (16) arranged on the high-voltage line, measurement data of a current strength effectively transmitted by the high-voltage line generated by said at least one sensor (16); anda detector that determines an exceeding of the ampacity (A) by the current strength based on the received measurement data from the at least one sensor,the storage unit also storing parameters of a joint probability model of i) operating current strength of the high-voltage line and ii) operating temperature of the high-voltage line exceeding the distribution temperature, where the joint probability model depends on meteorological parameters, wherein the joint probability model is Pθ(T>Trep,I), where Pθ is the joint probability depending on the meteorological parameters θ,T is the operating temperature of the high-voltage line,Trep is the distribution temperature, and I is the operating current strength of the high-voltage line,wherein the program code further causes the computer to: determine the ampacity of the high-voltage line by selecting a value of the ampacity by optimizing a probability of exceeding the distribution temperature, with the probability defined based on the stored probability model Pθ(T>Trep,I), said optimizing including steps of iteratively approaching a predetermined limit value of said probability by iteratively varying the ampacity and recording of the selected ampacity value in a storage unit of a monitoring device, andin the event that the measured current strength is determined to exceed the selected ampacity for a predetermined duration, causing actuation of either of a visual or an audible alarm.
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