WO2020187778A1 - Procédé et dispositif pour déterminer un défaut d'équipement électrique - Google Patents

Procédé et dispositif pour déterminer un défaut d'équipement électrique Download PDF

Info

Publication number
WO2020187778A1
WO2020187778A1 PCT/EP2020/056940 EP2020056940W WO2020187778A1 WO 2020187778 A1 WO2020187778 A1 WO 2020187778A1 EP 2020056940 W EP2020056940 W EP 2020056940W WO 2020187778 A1 WO2020187778 A1 WO 2020187778A1
Authority
WO
WIPO (PCT)
Prior art keywords
temperature rise
contact point
fault
power equipment
happening
Prior art date
Application number
PCT/EP2020/056940
Other languages
English (en)
Inventor
Jun Hua FU
Jian Tao GUAN
Kang SHI
Hao Wang
Ji Zhang
Ji Sheng ZHAO
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Publication of WO2020187778A1 publication Critical patent/WO2020187778A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear
    • H02B13/065—Means for detecting or reacting to mechanical or electrical defects
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/42—Circuits effecting compensation of thermal inertia; Circuits for predicting the stationary value of a temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • H02H3/085—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current making use of a thermal sensor, e.g. thermistor, heated by the excess current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H6/00—Emergency protective circuit arrangements responsive to undesired changes from normal non-electric working conditions using simulators of the apparatus being protected, e.g. using thermal images
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/006—Calibration or setting of parameters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices

Definitions

  • the temperature rise here refers to the difference between the temperature at the contact point and the ambient temperature.
  • the ambient temperature is usually acquired by a temperature-measuring probe placed in the environment .
  • the present invention provides a method for determining a fault of power equipment.
  • the method comprises: acquiring the real-time temperature rise at least at one contact point of power equipment, wherein the contact point is a contact position between at least two components of the power equipment ;
  • the load of power equipment is related to the primary current and the primary current directly affects the temperature rise at a contact point, whether a fault is happening at the contact point can be determined in combination with the corresponding primary current and real-time temperature rise at the contact point. In this way, a targeted fault determination can be made for power equipment at different loads and an inaccurate determination of a fault of power equipment at different loads based on a uniform threshold can be avoided.
  • acquiring the real-time temperature at least at one contact point of power equipment comprises:
  • determining whether a fault is happening at the contact point according to the primary current and the real-time temperature rise at the contact point comprises:
  • the temperature rise at a contact point of power equipment is first predicted, then the product of the contact resistance and the thermal resistance at the contact point is determined, and finally whether a fault is happening at a contact point is determined according to the product. In this way, whether a fault is happening at a contact point can be determined shortly after power equipment starts to work, and thus the service life of power equipment and the safety of the related workers are guaranteed .
  • the third temperature T at the contact point is determined according to the following formula:
  • the sampling period is 20 minutes to 30 minutes and L is 3 to 5.
  • the primary current is the mean value of the primary currents in the initial sampling period. Since the primary current may vary in real time, a primary current as accurate as possible can be acquired by using the mean value of the primary currents in a sampling period as the primary current of power equipment in the period .
  • determining whether a fault is happening at the contact point according to the third temperature rise and the primary current comprises :
  • the current alarm temperature rise threshold K W is determined according to the following formula:
  • DK k is the standard alarm threshold of the power equipment
  • I R is the rated current of the power equipment
  • I is the primary current
  • s a preset temperature rise redundancy
  • the predicted stable temperature rise is compared with the determined current alarm temperature rise threshold, and then whether to give out an alarm is determined according to the comparison result. In this way, whether a fault is happening at a contact point of power equipment can be quickly detected so as to guarantee the service life of the power equipment and the safety of the workers.
  • the value of ⁇ Constan: is 3°C to 5°C.
  • the at least one contact point is one in a group of same-attribute contact points in the three phases of the power equipment, and each group of same-attribute contact points includes three corresponding contact points in the same position in the power equipment ;
  • determining whether a fault is happening at the contact point according to the third temperature rise and the primary current comprises :
  • the temperature rises in different phases of a group of same- attribute contact points are compared to determine the phase of the contact point a fault is happening in, and the temperature rises to be compared are corrected before the comparison so that the determination result is more accurate. Such a comparison is quicker, more convenient and more accurate.
  • determining a first target temperature rise from the third temperature rises comprises determining the largest temperature rise of the third temperature rises to be the first target temperature rise;
  • correcting the first target temperature rise to acquire a fourth temperature rise after the correction comprises:
  • K C is the first target temperature rise
  • I c is the primary current at the corresponding same-attribute contact point of the first target temperature rise
  • I B is the primary current at the corresponding same-attribute contact point of the first benchmark temperature rise.
  • determining whether a fault is happening at the same-attribute contact point according to the fourth temperature rise comprises: comparing the fourth temperature rise with the first benchmark temperature rise and determining the smaller of the two to be a fifth temperature rise and the larger to be a sixth temperature rise;
  • the sixth temperature rise is greater than the sum of the fifth temperature rise and a first preset factor and the sixth temperature rise is greater than the product of the fifth temperature rise and a fourth preset factor, determining that a fault is happening at the corresponding same-attribute contact point of the sixth temperature rise.
  • the contact points are same-phase contact points
  • the method further comprises:
  • a second acquisition unit used to acquire the corresponding primary current at the contact point
  • a first determination unit used to determine whether a fault is happening at the contact point according to the primary current and the real-time temperature rise at the contact point.
  • the first acquisition unit is specifically used to
  • the first determination unit specifically comprises:
  • an acquisition subunit used to acquire the time constant of the first-order inertial system of power equipment
  • a fault determination subunit used to determine whether a fault is happening at the contact point according to the third temperature rise and the primary current
  • the temperature rise at a contact point of power equipment is first predicted, then the product of the contact resistance and the thermal resistance at the contact point is determined, and finally whether a fault is happening at the contact point is determined according to the product. In this way, whether a fault is happening at a contact point can be determined shortly after power equipment starts to work, and thus the service life of power equipment and the safety of the related workers are guaranteed .
  • DK h _i is the first temperature rise and DK h is the second temperature rise;
  • the primary current is the mean value of the primary currents in the initial sampling period. Since the primary current may vary in real time, a primary current as accurate as possible can be acquired by using the mean value of the primary currents in a sampling period as the primary current of power equipment in the period .
  • the value of ⁇ -Constant is 3 °C to 5°C.
  • the fault determination subunit is specifically used to: determine a first target temperature rise from the third temperature rises;
  • the temperature rises in different phases of a group of same- attribute contact points are compared to determine the phase of the contact point a fault is happening in, and the temperature rises to be compared are corrected before the comparison so that the determination result is more accurate. Such a comparison is quicker, more convenient and more accurate.
  • determining a first target temperature rise from the third temperature rises comprises determining the largest temperature rise of the third temperature rises to be the first target temperature rise.
  • correcting the first target temperature rise to acquire a fourth temperature rise after the correction comprises:
  • K C is the first target temperature rise
  • I c is the primary current at the corresponding same-attribute contact point of the first target temperature rise
  • I B is the primary current at the corresponding same-attribute contact point of the first benchmark temperature rise.
  • the sixth temperature rise is greater than the sum of the fifth temperature rise and a first preset factor and the sixth temperature rise is greater than the product of the fifth temperature rise and a fourth preset factor, determine that a fault is happening at the corresponding same-attribute contact point of the sixth temperature rise.
  • a determination unit used to use the corresponding real-time temperature rises in the same phase as a determination temperature rise group
  • a selection unit used to select a second target temperature rise from a determination temperature rise group and use the other temperature rises as reference temperature rises;
  • a second benchmark temperature rise determination unit used to determine a second benchmark temperature rise according to the reference temperature rises
  • a second determination unit used to determine whether a fault is happening at the corresponding contact point of the second target temperature rise according to the second target temperature rise and the second benchmark temperature rise.
  • the real-time temperature rises at a plurality of contact points in the same phase are compared to determine whether a fault is happening at a contact point.
  • the algorithm of the method is simple and the method is convenient and quick.
  • the second determination unit is specifically used to:
  • the second target temperature rise is greater than the sum of the second benchmark temperature rise and a first preset factor and the second target temperature rise is greater than the product of the second benchmark temperature rise and a second preset factor, determine that a fault is happening at the corresponding contact point of the second target temperature rise .
  • the present invention further provides a device for determining a fault of power equipment, and the device comprises: at least a memory, used to store instructions;
  • At least a processor used to execute the method for determining a fault of power equipment according to the instructions stored in the memory.
  • the present invention further provides a readable storage medium, machine-readable instructions are stored in the readable storage medium, and when the machine-readable instructions are executed by a machine, the machine will execute the method for determining a fault of power equipment.
  • Fig. 1 is a flowchart of the method for determining a fault of power equipment according to a first embodiment of the present invention .
  • Fig. 3 is a flowchart of the method for determining a fault of power equipment according to a third embodiment of the present invention .
  • Fig. 4 is a flowchart of the method for determining a fault of power equipment according to a fourth embodiment of the present invention.
  • Fig. 5 is a flowchart of the method for determining a fault of power equipment according to a fifth embodiment of the present invention .
  • Fig. 6 is a schematic diagram of the structure of the device for determining a fault of power equipment according to a first embodiment of the present invention.
  • Fig. 7 is a schematic diagram of the structure of the device for determining a fault of power equipment according to a second embodiment of the present invention.
  • the power equipment in the present invention can be a switch cabinet or transformer, and of course, it can be other equipment which the method in the present invention can be applied to.
  • a contact point of power equipment can be a contact position between two components.
  • the power equipment is a switch cabinet, for example.
  • the primary current affects the temperature rises at different contact points.
  • the temperature rise here refers to the difference between the temperature at the contact point and the ambient temperature. For example, if the temperature at a contact point is 35°C and the ambient temperature is 25°C, then the temperature rise is 10°C. If the primary current remains unchanged, the temperature rise will steadily stay at a fixed value in 8 to 9 hours. To be simple, the temperature rise at the current point in time is determined by the current accumulation in the previous 8 to 9 hours.
  • Embodiment 1 provides a method for determining a fault of a switch cabinet.
  • the executor of the method is a device for detecting a fault of the switch cabinet.
  • the device can be integrated into a temperature sensor or can be disposed separately.
  • Fig. 1 shows the flowchart of the method for determining a fault of a switch cabinet according to embodiment 1.
  • the contact point of the switch cabinet is a contact position between at least two components, for example, a contact position between a moving contact and a static contact, or a contact position between a copper bar and a sleeve, that is to say, the contact point can be a contact point of the switch cabinet or a contact point of the busbar.
  • Step 102 Acquire the corresponding primary current at the contact point.
  • Steps 101 and 102 can be performed simultaneously or successively .
  • the load of the switch cabinet is related to the primary current and the primary current directly affects the temperature rise at a contact point, whether a fault is happening at the contact point can be determined in combination with the corresponding primary current and real-time temperature rise at the contact point. In this way, a targeted fault determination can be made for the switch cabinet at different loads and an inaccurate determination of a fault of the switch cabinet at different loads based on a uniform threshold can be avoided.
  • Fig. 2 shows the flowchart of the method for determining a fault of a switch cabinet according to embodiment 2.
  • the method comprises :
  • Step 201 Acquire a first temperature rise at a contact point of the switch cabinet at the start of an initial sampling period and a second temperature rise at the end of the initial sampling period .
  • the initial sampling period refers to the corresponding sampling period in which the first temperature rise and the second temperature rise need to be acquired, and the initial sampling period does not mean the actual first sampling period.
  • the sampling period can be set to 20 minutes to 30 minutes, for example, according to the actual requirements.
  • the first temperature rise and the second temperature rise can be acquired through a temperature sensor.
  • the temperature sensor can be mounted on the contact point or near the contact point.
  • Step 202 Acquire the time constant of the first-order inertial system of the switch cabinet.
  • DK h _i is the first temperature rise and DK h is the second temperature rise.
  • the predicted temperature rises at the end of different sampling periods can be determined in many other ways, which will not be described here again.
  • the product of the contact resistance and the thermal resistance at the contact point is determined according to the following formula:
  • Iw is the primary current
  • R is the contact resistance at the contact point
  • thermal resistance at the contact point is the thermal resistance at the contact point
  • r can be set according to the actual requirements.
  • the product of the contact resistance and the thermal resistance reflecting the connection state of the switch cabinet system and independent of input, should be stable. Whether a fault is happening at the contact point can be accurately determined according to the product of the contact resistance and the thermal resistance at the contact point.
  • the temperature rise at the contact point of the switch cabinet is predicted, then the product of the contact resistance and the thermal resistance at the contact point is determined, and finally whether a fault is happening at the contact point is determined according to the product. In this way, whether a fault is happening at the contact point can be determined shortly after the switch cabinet starts to work, and thus the service life of the switch cabinet and the safety of the related workers are guaranteed.
  • Embodiment 3 further describes the method for determining a fault of a switch cabinet in embodiment 2.
  • Fig. 3 shows the flowchart of the method for determining a fault of a switch cabinet according to embodiment 3.
  • the method comprises :
  • Step 301 is the same as Step 201 and is not repeated here again .
  • Step 302 Acquire the time constant of the first-order inertial system of the switch cabinet.
  • Step 302 is the same as Step 202 and is not repeated here again .
  • Step 303 is the same as Step 203 and is not repeated here again .
  • Step 304 Acquire the rated current of the switch cabinet and a preset standard alarm threshold.
  • Step 304 and the previous steps can be performed simultaneously or successively.
  • the primary current refers to the primary current of the switch cabinet acquired in real time, the mean value of primary currents in a sampling period (for example, the mean value of primary currents in an initial sampling period or the mean value of primary currents in a preset time segment) , or the primary current at the current point of time, depending on the actual requirements.
  • the primary current in embodiment 3 refers to the current on the high-voltage side.
  • Step 305 specifically comprises:
  • DK k is the standard alarm threshold
  • I R is the rated current
  • I is the current primary current
  • ⁇ Constant can be set to 3 °C to
  • Step 306 Give out an alarm if the third temperature rise is greater than or equal to the current alarm temperature rise threshold .
  • An alarm can be given out in many ways, for example, by giving out a sound, word or image prompt or sending a short message to the corresponding responsible person.
  • the process goes back to step 301 to achieve the purpose of monitoring temperature rises in real time.
  • the third temperature rise here can be considered a stable temperature rise.
  • Embodiment 4 further describes the method for determining a fault of a switch cabinet in embodiment 2.
  • at least one contact point is one in a group of same-attribute contact points in the three phases of the switch cabinet, and each group of same-attribute contact points includes three corresponding contact points in the same position in the switch cabinet .
  • Step 402 is the same as Step 202 and is not repeated here again .
  • the larger of the remaining two third temperature rises can be selected as a first benchmark temperature rise.
  • the primary current here can be the mean value of primary currents in the current sampling period.
  • steps 401 to 406 can be performed every sampling period so as to continuously monitor whether a fault is happening at a same- attribute contact point.
  • the primary current can be the mean value of primary currents in the current sampling periods. Since the primary current may vary in real time, if the mean value of primary currents in a sampling period is used as the primary current of the switch cabinet in the sampling period, the primary current can be obtained as accurately as possible. Accordingly, the current sampling period is the initial sampling period of step 401.
  • Step 406 Determine whether a fault is happening at the same- attribute contact point according to the fourth temperature rise.
  • the fourth temperature rise exceeds a preset threshold, it can be determined that a fault is happening at the corresponding contact point of the target temperature rise.
  • the fourth temperature rise is compared with the first benchmark temperature rise and the smaller of the two is determined to be a fifth temperature rise and the larger to be a sixth temperature rise;
  • the sixth temperature rise is greater than the sum of the fifth temperature rise and a first preset factor and the sixth temperature rise is greater than the product of the fifth temperature rise and a fourth preset factor, it is determined that a fault is happening at the corresponding same-attribute contact point of the sixth temperature rise.
  • the fourth temperature rise is compared with the first benchmark temperature rise, if the fourth temperature rise is smaller and the first benchmark temperature rise is larger, then the fourth temperature rise is used as the fifth temperature rise and the first benchmark temperature rise is used as the sixth temperature rise.
  • the sixth temperature rise is greater than the sum of the fifth temperature rise and a first preset factor, the difference between the sixth temperature rise and the fifth temperature rise is greater than the first preset factor. Thus, it is very likely that a fault is happening at the corresponding same- attribute contact point of the sixth temperature rise. When the primary current is very large, the temperature rises in different phases will differ greatly even in the normal contact state. Therefore, the fault needs to be further verified. If the sixth temperature rise is greater than the product of the fifth temperature rise and a fourth preset factor, the sixth temperature rise is greater than the fifth temperature rise in proportion. Thus, when the above-mentioned two conditions are satisfied, it can be determined that a fault is happening at the corresponding same-attribute contact point of the sixth temperature rise. The determination result is accurate.
  • the first preset factor is 3°C to 5°C, for example, and the fourth preset factor is 1.2 to 1.5, for example.
  • the temperature rises in different phases of a group of same-attribute contact points are compared to determine the phase of the contact point a fault is happening in, and the temperature rises to be compared are corrected before the comparison so that the determination result is more accurate.
  • Such a comparison is quicker, more convenient and more accurate.
  • Embodiment 5 further describes the method for determining a fault of a switch cabinet in embodiment 4.
  • the contact points in step 501 are same-phase contact points, for example, at least a part of a group of contact points of the same phase.
  • Step 501 Acquire the real-time temperature rises in the corresponding phases of different contact points of the switch cabinet .
  • Step 503 Select a second target temperature rise from the determination temperature rise group and use the other temperature rises as reference temperature rises.
  • the second target temperature rise is greater than the sum of the reference temperature rise and a first preset factor, the difference between the second target temperature rise and the reference temperature rise is greater than the first preset factor.
  • the second target temperature rise is greater than the product of the reference temperature rise and a second preset factor, the second target temperature rise is greater than the reference temperature rise in proportion.
  • the first preset factor is 3°C to 5°C, for example, and the second preset factor is 1.2 to 1.5, for example.
  • the third temperature rise T at the contact point is determined according to the following formula:
  • the primary current is the mean value of the primary currents in the initial sampling period.
  • the temperature rise at the contact point of the switch cabinet is predicted, then the product of the contact resistance and the thermal resistance at the contact point is determined, and finally whether a fault is happening at the contact point is determined according to the product. In this way, whether a fault is happening at the contact point can be determined shortly after the switch cabinet starts to work, and thus the service life of the switch cabinet and the safety of the related workers are guaranteed.
  • the fault determination subunit 6033 is specifically used to:
  • AK R is the standard alarm threshold of the switch cabinet
  • I R is the rated current of the switch cabinet
  • I w is the current primary current
  • ⁇ Constant is a preset temperature rise redundancy.
  • the predicted stable temperature rise is compared with the determined current alarm temperature rise threshold, and then whether to give out an alarm is determined according to the comparison result. In this way, whether a fault is happening at a contact point of the switch cabinet can be quickly detected so as to guarantee the service life of the switch cabinet and the safety of the workers.
  • Embodiment 9 further describes the device for determining a fault of a switch cabinet in embodiment 7.
  • At least one contact point is one in a group of same-attribute contact points in the three phases of the switch cabinet, and each group of same-attribute contact points includes three corresponding contact points in the same position in the switch cabinet.
  • the fault determination subunit 6033 is specifically used to: determine a first target temperature rise from the third temperature rises;
  • correcting the first target temperature rise to acquire a fourth temperature rise after the correction comprises :
  • K C is the first target temperature rise
  • I c is the primary current at the corresponding same-attribute contact point of the first target temperature rise
  • I B is the primary current at the corresponding same-attribute contact point of the first benchmark temperature rise.
  • the contact points are same-phase contact points.
  • the device 800 for determining a fault of a switch cabinet further comprises a determination unit 801, a selection unit 802, a second benchmark temperature rise determination unit 803 and a second determination unit 804, besides the first acquisition unit 601, the second acquisition unit 602 and the first determination unit 603 in the previous embodiments.
  • the mean value of all reference temperature rises is used as the second benchmark temperature rise.
  • the second determination unit 804 is specifically used to:
  • the present invention further provides a device for determining a fault of a switch cabinet.
  • the device comprises at least a memory and at least a processor.
  • the memory is used to store instructions.
  • the processor is used to execute the method for determining a fault of a switch cabinet described in any of the previous embodiments according to the instructions stored in the memory.
  • the embodiments of the present invention further provide a readable storage medium.
  • Machine-readable instructions are stored in the readable storage medium, and when the machine- readable instructions are executed by a machine, the machine will execute the method for determining a fault of a switch cabinet described in any of the previous embodiments.
  • a system or device equipped with a readable storage medium can be provided.
  • Software program codes which can realize the function in any of above-mentioned embodiments are stored in the readable storage medium and the computer or processor of the system or device can read out and execute the machine-readable instructions stored in the readable storage medium.
  • program codes read from the readable storage medium themselves can realize the function in any of the above- mentioned embodiments. Therefore, machine-readable codes and the readable storage medium where machine-readable codes are stored constitute a part of the present invention.
  • hardware units can mechanically or electrically be realized.
  • a hardware unit or processor can comprise a permanent dedicated circuit or logic (for example, special processor, FPGA, or ASIC) to complete the corresponding operations.
  • a hardware unit or processor can further comprise a programmable logic or circuit (for example, a general processor or other programmable processor) and can complete the corresponding operations through temporary software setting.
  • the specific implementation mode mechanical mode, or dedicated permanent circuit, or circuit which is temporarily set

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Gas-Insulated Switchgears (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

L'invention concerne un procédé et un dispositif permettant de déterminer un défaut d'équipement électrique. Le procédé consiste à : acquérir l'élévation de température en temps réel au moins au niveau d'un point de contact d'un équipement électrique, le point de contact étant la position de contact entre au moins deux composants de l'équipement électrique ; acquérir le courant primaire correspondant au point de contact ; déterminer si un défaut se produit au niveau du point de contact en fonction du courant primaire et de l'élévation de température en temps réel au point de contact. La présente invention permet d'effectuer une détermination de défaut ciblée pour un équipement électrique à différentes charges et évite une détermination de défaut imprécise pour un équipement électrique à différentes charges sur la base d'un seuil uniforme.
PCT/EP2020/056940 2019-03-15 2020-03-13 Procédé et dispositif pour déterminer un défaut d'équipement électrique WO2020187778A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910199372.4 2019-03-15
CN201910199372.4A CN109932592B (zh) 2019-03-15 2019-03-15 用于电力设备的故障确定的方法与装置

Publications (1)

Publication Number Publication Date
WO2020187778A1 true WO2020187778A1 (fr) 2020-09-24

Family

ID=66987326

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/056940 WO2020187778A1 (fr) 2019-03-15 2020-03-13 Procédé et dispositif pour déterminer un défaut d'équipement électrique

Country Status (2)

Country Link
CN (1) CN109932592B (fr)
WO (1) WO2020187778A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113985941A (zh) * 2021-10-28 2022-01-28 歌尔科技有限公司 温度控制方法、装置、设备及存储介质
CN114692433A (zh) * 2022-04-28 2022-07-01 中原环保股份有限公司 一种配电柜表面温度巡检的故障分析方法
DE102021213293A1 (de) 2021-11-25 2023-05-25 Siemens Aktiengesellschaft Verfahren zum Betreiben einer Schaltanlage und Schaltanlage
DE102021213290A1 (de) 2021-11-25 2023-05-25 Siemens Aktiengesellschaft Verfahren zum Betreiben einer Schaltanlage und Schaltanlage
CN117824876A (zh) * 2024-03-05 2024-04-05 浙江正泰电器股份有限公司 端子过温预警方法、装置、表箱设备及存储介质

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110488120A (zh) * 2019-08-19 2019-11-22 国网湖南省电力有限公司 一种高压开关柜温度电流一体化在线诊断方法、系统及介质
CN110726494B (zh) * 2019-11-27 2020-09-15 成都比善科技开发有限公司 高压开关柜温度监测系统及监测方法
CN116679199A (zh) * 2023-07-28 2023-09-01 新誉集团有限公司 空调加热器的接触器的故障检测方法和系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0530637A (ja) * 1991-07-19 1993-02-05 Nissin Electric Co Ltd 導電部過熱検出報知方法
EP3171469A1 (fr) * 2015-11-19 2017-05-24 ABB Schweiz AG Procédé de détection de mauvaises connexions dans des appareillages de commutation moyenne tension et appareillage de commutation moyenne tension lui-même
CN109406004A (zh) * 2018-09-18 2019-03-01 广东电网有限责任公司惠州供电局 一种开关柜温升分析方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102829885B (zh) * 2012-08-14 2015-02-11 广东电网公司佛山供电局 气体绝缘开关设备母线接头过热故障检测与判别方法
CN103854446B (zh) * 2014-03-14 2016-06-29 Abb技术有限公司 一种高压开关柜动态温升诊断报警方法和装置
CN104535221B (zh) * 2014-12-25 2017-08-25 山东康威通信技术股份有限公司 一种基于分布式光纤测温智能分析方法
CN105203885A (zh) * 2015-10-10 2015-12-30 上海博英信息科技有限公司 一种基于环网柜母线温度无源无线测量的载流量分析方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0530637A (ja) * 1991-07-19 1993-02-05 Nissin Electric Co Ltd 導電部過熱検出報知方法
EP3171469A1 (fr) * 2015-11-19 2017-05-24 ABB Schweiz AG Procédé de détection de mauvaises connexions dans des appareillages de commutation moyenne tension et appareillage de commutation moyenne tension lui-même
CN109406004A (zh) * 2018-09-18 2019-03-01 广东电网有限责任公司惠州供电局 一种开关柜温升分析方法

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113985941A (zh) * 2021-10-28 2022-01-28 歌尔科技有限公司 温度控制方法、装置、设备及存储介质
DE102021213293A1 (de) 2021-11-25 2023-05-25 Siemens Aktiengesellschaft Verfahren zum Betreiben einer Schaltanlage und Schaltanlage
DE102021213290A1 (de) 2021-11-25 2023-05-25 Siemens Aktiengesellschaft Verfahren zum Betreiben einer Schaltanlage und Schaltanlage
WO2023094074A1 (fr) * 2021-11-25 2023-06-01 Siemens Aktiengesellschaft Procédé de fonctionnement d'un appareillage de commutation et appareillage de commutation
CN114692433A (zh) * 2022-04-28 2022-07-01 中原环保股份有限公司 一种配电柜表面温度巡检的故障分析方法
CN117824876A (zh) * 2024-03-05 2024-04-05 浙江正泰电器股份有限公司 端子过温预警方法、装置、表箱设备及存储介质

Also Published As

Publication number Publication date
CN109932592A (zh) 2019-06-25
CN109932592B (zh) 2021-05-28

Similar Documents

Publication Publication Date Title
WO2020187778A1 (fr) Procédé et dispositif pour déterminer un défaut d'équipement électrique
JP2019500584A5 (fr)
CN110686352B (zh) 一种温度检测值的补偿方法、装置、存储介质及空调
KR101465401B1 (ko) 서지보호기의 수명예측장치 및 방법
JPS61240817A (ja) 遮断器のデジタル固体引外し装置
US20180062372A1 (en) Arc detection apparatus using electrical energy
JP6091554B2 (ja) 異常検知システム、及び、異常検知方法
CN110208612B (zh) 压缩机缺相运行检测方法、装置、设备及可读存储介质
WO2018202788A1 (fr) Estimation par fonction affine par morceaux de tension de séquence négative pour détection de défaut dans des systèmes électriques
CN109932591B (zh) 电力设备的故障检测的方法与装置
CN108802573A (zh) 检测电力系统补偿网络中接地故障消失的方法与装置
EP4035249A1 (fr) Gestion d'un circuit de précharge d'un système de gestion de batteries
CN109919390B (zh) 预测电力设备的接触点的温升的方法与装置
EP2927928B1 (fr) Procede de determination d'une surchauffe d'au moins une borne de connexion d'un dispositif electrique, appareil auxiliaire associe, et systeme electrique comprenant un tel dispositif electrique et un tel appareil auxiliaire
CN109932594B (zh) 用于电力设备的故障检测的方法与装置
JP6904578B2 (ja) 通信装置、通信回線選択方法及びプログラム
CN109900387B (zh) 用于确定电力设备的报警温升阈值的方法与装置
EP2910958A1 (fr) Détection d'un défaut, notamment transitoire, dans un réseau électrique
SE519696C2 (sv) Digitalt skyddsrelä
JP6541227B2 (ja) き電用故障点標定装置
CN109932593B (zh) 用于电力设备的故障检测的方法与装置
CN112067153A (zh) 热敏电阻的温度检测装置以及智能家电
CN112782529A (zh) 一种基于零序功率极性的选线方法及系统
WO2009101580A2 (fr) Procédé de surveillance de durée de vie d'une lampe à incandescence et ensemble lampe à incandescence
JP2008008859A (ja) 電線劣化検出方法及び検出装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20712275

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20712275

Country of ref document: EP

Kind code of ref document: A1