WO2019244034A1 - Dispositivo para la interrupción y reconexión automática de circuitos de media tensión instalable en bases intercambiables - Google Patents
Dispositivo para la interrupción y reconexión automática de circuitos de media tensión instalable en bases intercambiables Download PDFInfo
- Publication number
- WO2019244034A1 WO2019244034A1 PCT/IB2019/055104 IB2019055104W WO2019244034A1 WO 2019244034 A1 WO2019244034 A1 WO 2019244034A1 IB 2019055104 W IB2019055104 W IB 2019055104W WO 2019244034 A1 WO2019244034 A1 WO 2019244034A1
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- WIPO (PCT)
- Prior art keywords
- vacuum switch
- current
- electromagnetic actuator
- sheet
- contacts
- Prior art date
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Classifications
-
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/0007—Details of emergency protective circuit arrangements concerning the detecting means
-
- 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
- H02H3/02—Details
- H02H3/06—Details with automatic reconnection
Definitions
- the present invention relates to electromechanical protection and maneuvering devices in medium voltage circuits, particularly with switches and reclosers that can be installed on interchangeable bases.
- the protection devices for medium voltage circuits provide electrical isolation when a fault is detected in the distribution lines in order to prevent the propagation of the fault.
- these devices can be switches, sectionalizers, fuses and reconnectors, the latter being too large and heavy to be stable on interchangeable bases.
- fuses disconnect the circuit in the presence of a fault.
- This disconnection consists of a visible opening that is effected by the fall of one of the ends of the fuse holder, which is separated from the distribution line, while the other end is balanced and tilted on a pivot of the exchangeable base.
- the fuse After clearing the fault, the fuse must be replaced and the fuse holder manually reconnected by an operator using a pole or other suitable element.
- This manual reconnection requires the mobilization of a crew that usually must travel several kilometers until the fallen fuse holder is identified, which results in high costs and long reconnection times.
- reclosers are devices capable of reestablishing the connection of the medium voltage line automatically once the fault has been cleared. However, these devices are usually large, heavy, expensive and require their own power supply.
- automatic interrupting and reconnecting devices stable on interchangeable bases usually incorporate an electromagnetic actuator that is directly actuated with the fault current.
- the medium voltage line is diverted to the electromagnetic actuator and, when the current reaches a preset limit, indicating a fault, the actuator changes its state.
- a controller determines the time after which reconnection takes place.
- the present invention relates to protection and maneuvering devices in medium voltage circuits, particularly with fuses, sectionalizers and automatic reclosers that can be installed on interchangeable bases.
- the device (100) detects if there is a fault in the medium voltage line and opens a vacuum switch (210). After a while that depends on the characteristics of the failure and configuration of the device, the device (100) performs automatic reclosing of the vacuum switch (210).
- the device (100) disclosed here is characterized in that it avoids the need for an operator or a crew to mobilize to reconnect since disconnections are not made by means of the fall and balancing of the device (100) on the pivot of the exchangeable base (150).
- the connection with the exchangeable base (150) allows an operator to manually disconnect the device (100), causing the fall and consequent balancing, in order to make a visible disconnection.
- Fault detection is performed by constant measurement of line current using current sensors (320) arranged around it.
- the device (100) also comprises current transformers (330) in which a current is used that is used to power the device (100) and which is directed to super-capacitors (340) that store electrical energy.
- This arrangement of the current transformers (330) makes the device (100) disclosed here self-powered, and energy storage in the super capacitors (340) gives it autonomy because it allows it to operate even when there is no line current.
- the device (100) may include voltage sensors and / or electric field (321a, 321b) with which additional information is obtained from the line such as its frequency, impedance, power factor, direction current flow, etc.
- the device (100) according to the present invention is characterized in that the mobile components are aligned on a single axis, avoiding tangential or radial shocks between the contacts of the vacuum switch (210). Additionally, the device (100) disclosed herein includes active control of speed of the mobile contact (211) of the vacuum switch (210), thereby attenuating the force of the shocks between the contacts (211, 212) while ensuring that the opening and reclosing speed is high enough to prevent generation of electric arcs. The combination of these two characteristics (axial alignment and speed control) allows the device (100) to have a longer service life than other similar devices, since the mechanical wear of the contacts (211, 212) of the power switch is reduced empty (210).
- the present invention also discloses a device (100) that includes a wireless communications module (720) that allows an operator, via a wireless control panel (900), to monitor and control the status of the device (100) remotely
- the communications module (720) allows communication between different devices to perform interruptions and reconnections synchronized on polyphase lines.
- Figure 1 shows an overview of the device (100) according to the present invention.
- Figure 2a shows a cross-section of the device (100) when the vacuum switch (210) is closed.
- Figure 2b shows a cross-section of the device (100) when the vacuum switch (210) is open.
- Figure 3 shows the current sensors (320) and the current transformers (330) surrounding the flexible conductor (310) which is in series with the medium voltage line.
- Figure 4 shows a non-limiting embodiment of the control panel (900).
- Figure 5a shows the magnetic coupling mechanism (530) attached to the mechanical indicator (520) when the vacuum switch (210) is closed.
- Figure 5b shows the magnetic coupling mechanism (530) attached to the mechanical indicator (520) when the vacuum switch (210) is open.
- FIG. 6 shows a non-limiting embodiment of the housing (810) that includes the pressure relief valve (811).
- Figure 7 shows a non-limiting embodiment of the external charger (611) and its connection (610) to the device (100).
- Figure 8 shows a non-limiting embodiment of the electrical connection points (830) between the device (100) and the exchangeable base (150).
- the present invention relates to protection and maneuvering devices in medium voltage circuits, particularly fuses, sectionalizers and automatic reclosers that can be installed on interchangeable bases.
- a device (100) is revealed that measures the current of a medium voltage line and determines if an electrical fault occurs. In case of detecting failure, the device (100) carries out the disconnection of the line and, based on the characteristics of the detected fault and its configuration, determines the time after which the automatic reconnection is performed.
- the present invention avoids the need for an operator to manually reconnect after the fault has been cleared, reducing the costs associated with the mobilization of the crew and shortening the reconnection times. In case a permanent fault is detected, the device (100) will maintain the interruption of the line until you receive the opposite order. Additionally, the device (100) described allows two-phase and / or three-phase operation and contemplates control, monitoring and updating by means of wireless communication.
- the present invention is characterized in that it reveals a device (100) that can be installed on interchangeable bases for the interruption and automatic reconnection of medium voltage circuits. Being stable on interchangeable bases, the device (100) described here is compatible with international standards, is lightweight and easy to install.
- the device (100) comprises a vacuum switch (210), an electromagnetic actuator (220) and a tensioning mechanism (410) mechanically connected to the movable contact (211) of the vacuum switch (210 ), a damping mechanism (420) arranged in such a way that it acts against the inertia of the electromagnetic actuator (220) during the opening and closing of the device (100), one or more flexible conductors (310) connected in series between the mobile contact (211) of the vacuum switch (210) and the medium voltage line, one or more current sensors (320) and one or more current transformers (330) each surrounding the flexible conductors (310) , one or more super-capacitors (340) and a control module (710).
- Figure 1 shows a general diagram of the device (100) described.
- the device (100) in accordance with the present invention allows automatic reconnection of the vacuum switch (210) and, unlike similar devices, does not disconnect the line by dropping the device (100 ), thus avoiding the need for an operator to perform manual reconnection.
- the device (100) disclosed herein does provide the possibility for an operator to manually use a pole or other suitable element to cause the device (100) to fall and swing on a base pivot. interchangeable (150). This fall allows the visible disconnection of the device (100), which is necessary in accordance with safety standards when performing inspection, repair and maintenance operations on medium voltage lines.
- the device (100) disclosed here is also characterized in that it has a longer lifespan than other similar devices.
- This advantage arises as a result of the reduction in the mechanical wear of the contacts, which is achieved by combining the following particular characteristics of the device:
- the device (100) is also characterized in that it allows obtaining detailed information of the medium voltage line signal from the one or more current sensors (320).
- the device (100) of the present invention includes voltage and / or electric field sensors (321a, 321b) that allow determining additional information such as its frequency, impedance, power factor, current flow direction, etc.
- the device (100) measures the current of the medium voltage line and, if an electrical fault is detected in the circuit, the control module (710) generates a signal that causes the actuator electromagnetic (220) moves, separating the mobile contact (211) of the vacuum switch (210) from the fixed contact (212) and generating the interruption of the line. To reconnect, the control module (710) sends a second signal that causes the electromagnetic actuator (220) to return to its initial state, causing the mobile contact (211) to come back into contact with the fixed contact (212 ).
- the invention reveals that the control module (710) automatically performs the opening of the circuit after a first time that depends on the characteristics of the fault current measured by the one or more current sensors (320). Similarly, the control module (710) automatically reconnects the circuit after a second time that depends on the characteristics of the fault current measured by the one or more current sensors (320) and the configuration of the device (100).
- the device (100) of the present invention further comprises a trip capacitor (350) with which the electromagnetic actuator (220) is operated.
- the trip capacitor (350) is connected to the electromagnetic actuator (220) and sends a current pulse with which the polarity of the electromagnetic actuator (220) is reversed in order to change its state.
- the trigger pulse can be a pulse train of variable frequency.
- the trip capacitor (350) sends to the electromagnetic actuator (220) a pulse or train of current pulses in one direction.
- the trip capacitor (350) sends to the electromagnetic actuator (220) a pulse or train of current pulses in the opposite direction.
- the device (100) disclosed herein further comprises a polarity reversal circuit (734) that reverses the direction of the current that drives the electromagnetic actuator (220), so that the pulse sent by the trip capacitor (350) is inverted according to the state of the device (100).
- the polarity reversing circuit (734) is connected between the trip capacitor (350) and the electromagnetic actuator (220), and the control module (710) determines its status.
- the control module (710) commands the polarity reversal circuit (734) so that the current sent by the trip capacitor (350) reaches the electromagnetic actuator (220) with a address.
- the control module (710) commands the polarity reversal circuit (734) so that the current sent by the trip capacitor (350) reaches the electromagnetic actuator (220) with the opposite direction.
- the polarity reversing circuit (734) is a H Bridge.
- the electromagnetic actuator (220) is selected from the group comprising monostable magnetic actuators and bistable magnetic actuators.
- the electromagnetic actuator (220) is monostable, unipolar and is configured so as to exert a force in the closing direction of the vacuum switch (210).
- the tensioning mechanism (410) is arranged in such a way as to favor the opening of the vacuum switch (210). In this embodiment, the tensioning mechanism (410) exerts a force on the electromagnetic actuator (220) in the direction in which the vacuum switch (210) is opened. The force exerted by the tensioning mechanism (410) is inferior and opposite to the force exerted by the permanent magnets of the electromagnetic actuator (220) so that the vacuum switch (210) is kept closed.
- the opening and closing of the vacuum switch (210) occurs according to the balance of the forces exerted by the electromagnetic actuator (220) and the tensioning mechanism (410).
- the permanent magnets of the electromagnetic actuator (220) exert a force to close the vacuum switch (210) which is greater than the force of the tensioning mechanism (410) exerts to open it.
- the control module (710) commands the trip capacitor (350) to send a train of current pulses to the electromagnetic actuator (220) in order to reduce its magnetic field and reduce the force in the direction of the closure.
- the balance of forces between the electromagnetic actuator (220) and the tensioning mechanism (410) results in a net force that moves the moving contact (211) of the vacuum switch (210) to its opening state.
- the electromagnetic actuator (220) is configured to exert a force in the opening direction of the vacuum switch (210), and the tensioning mechanism (410) is arranged in such a way as to favor vacuum switch closure (210).
- the tensioning mechanism (410) exerts a force on the electromagnetic actuator (220) in the direction in which the vacuum switch (210) is closed. The force exerted by the tensioning mechanism (410) is superior and opposite to the force exerted by the magnets permanent of the electromagnetic actuator (220) so that the vacuum switch (210) is kept closed.
- the permanent magnets of the electromagnetic actuator (220) exert a force to open the vacuum switch (210) which is lower to the force that the tensioning mechanism (410) exerts to close it.
- the control module (710) commands the trip capacitor (S50) to send a train of current pulses to the electromagnetic actuator (220) in order to increase its magnetic field and increase the force in the opening direction.
- the balance of forces between the electromagnetic actuator (220) and the tensioning mechanism (410) results in a net force that displaces the moving contact (211) of the vacuum switch
- the tensioning mechanism (410) is an elastic element, preferably a spring.
- the present invention also reveals the speed control of the mobile contact
- the control module (710) performs the pulse width modulation (PWM) to the pulse train sent by the trip capacitor (S50), thus regulating the reversal of the polarity of the electromagnetic actuator (220) and, consequently, the balance of forces between the electromagnetic actuator (220) and the tensioning mechanism (410). This regulation allows the active control of the opening and reclosing speed of the vacuum switch (210).
- PWM pulse width modulation
- a preferred embodiment of the invention includes a distance sensor (322) with which the relative position of the vacuum switch contacts (210) is measured. Position measurement Relative of the contacts of the vacuum switch (210) as a function of time allows to determine the travel speed of the mobile contact (211) in order to control its dynamics.
- the distance sensor (322) is selected from the group comprising: linear displacement sensors, optical sensors, capacitive sensors, inductive sensors and ultrasound sensors.
- the device (100) further comprises a limit switch sensor (323) with which it is determined that the mobile contact (211) has reached its maximum travel.
- the mobile contact (211) of the vacuum switch (210) is mechanically connected to a damping mechanism (420) which is configured to act against the inertia of the electromagnetic actuator (220) during opening and reclose the device (100).
- the damping mechanism (420) regulates the travel speed of the mobile contact (211) of the vacuum switch (210) in order to dampen it. In this way the mechanical wear suffered by the device (100), particularly the contacts of the vacuum switch (210), during the reconnection stage is reduced and its useful life is extended.
- the damping mechanism (420) is an elastic element, preferably a spring.
- the mobile contact (211) of the vacuum switch (210) is mechanically limited by a displacement limiter component (440) which is configured to prevent the actuator from opening the device (100) Electromagnetic (220) travels beyond a predefined distance, thus reducing the rebound generated by the inertia of the electromagnetic actuator (220). This also reduces the mechanical wear that the device (100) suffers, particularly the contacts of the vacuum switch (210), during the opening stage and its useful life is extended.
- the displacement limiting component (440) is a thermoplastic polymer, preferably a polyamide and more preferably is made of Nylon.
- FIG. 2a and 2b show a cross-section of the device (100) of the present invention where it is evidenced that all the components involved in the movement of the mobile contact (211) of the vacuum switch are located on the same axis. Therefore, all mechanical forces are exerted along the axis of the mobile contact (211), and there are no torques or radial or transverse forces that can misalign the mechanical elements of the device (100) and generate non-normal shocks, i.e. , with tangential component, between the contacts.
- the device (100) further comprises an insulating element (360) that electrically isolates the contacts ( 211, 212) of electronic circuits.
- the insulating element (360) is located between the damping mechanism (420) and the electromagnetic actuator (220) and prevents electrical contact between the electronics of the device (100) and the elements that are at the potential of the line, namely the vacuum switch (210) and the shaft (430).
- the insulating element (360) separates the axis (430) into two sections: a first section of the axis (431) that meets the potential of the line and a second section of the axis (432 ) electrically isolated from the first section.
- the insulating element (360) is made of a thermoplastic polymer.
- the insulating element (360) is a polyamide and even more preferably it is made of Nylon.
- the device (100) further comprises one or more flexible conductors (310) connected in series between the mobile contact (211) of the vacuum switch (210) and the medium voltage line.
- the one or more flexible conductors (310) are connected to the mobile contact (211) of the vacuum switch (210) and to the contact that is attached to the pivot of the exchangeable base (150).
- the one or more flexible conductors (310) are attached to the structure of the device (100) by one or more metal jaws that facilitate its positioning. Including the one or more flexible conductors (310) allows the present invention to provide current sensors (320) and current transformers (330) around the medium voltage line, such that a current proportional to the current is induced in them line current.
- the one or more flexible conductors (310) are cables.
- the device (100) also employs one or more current sensors (320) with which the medium voltage line signal is measured. Based on the measurements made by these current sensors (320), the control module (710) determines if a fault has occurred in the circuit and, if so, the characteristics of the fault. As shown in Figure 3, the one or more current sensors (320) are each surrounding the one or more flexible conductors (310) such that a current proportional to the average line current is induced therein tension. The signal measured by the one or more current sensors (320) is transmitted to the control module (710) to determine if an electrical fault occurs and its characteristics. Likewise, the control module (710) can measure harmonics of the current signal and sample the line based on the signal measured by the one or more current sensors (320).
- the one or more current sensors (320) according to the present invention are selected from the group comprising: current transformers and Rogowski coils.
- the device (100) described according to the present invention comprises one or more current transformers (330) each located around the one or more flexible conductors (310) as shown in Figure 3.
- transformers of Current (330) induces an electric current proportional to the current of the medium voltage line which is used to power the circuits that constitute the rest of the device (100).
- the induced current in the one or more current transformers (330) is also transmitted to voltage regulators (732) responsible for charging the trip capacitor (350) and the super capacitors (340).
- the device (100) also includes one or more super-capacitors (340) in which part of the electrical energy collected by the current transformers (330) is stored. These super-capacitors (340) provide independence to the device (100) and allow it to function properly even during the interruption of the line without the need to incorporate batteries or connections to external power sources.
- the device (100) further comprises a power module (730) that rectifies the energy induced in the Current transformers (330) and delivery to super-capacitors (340) to be stored.
- the current induced in the one or more current transformers (330) is transmitted to a first voltage regulator (732a) with which the trip capacitor (350) is charged.
- the current induced in the one or more current transformers (330) is transmitted to a second voltage regulator (732b) with which the super capacitors (340) are charged.
- Another embodiment of the invention comprises a DC-DC voltage booster (731) with which the output voltage of the second voltage regulator (732b) is converted to the output voltage of the first voltage regulator (732a), so that the energy stored in the super capacitors (340) can be used to charge the trip capacitor (350).
- the first voltage regulator (732a) has an output of between 50 V and 100 V.
- the second voltage regulator (732b) has an output of between 2 V and 15 V.
- the device (100) comprises a voltage sensor (321a) that allows the line voltage signal to be measured, that is, the voltage as a function of time.
- This sensor can be restricted to an electric field sensor (321b) with which the presence of electric field in the line and / or its frequency is detected regardless of the voltage value over time.
- control module (710) calculates the power factor of the electrical signal based on the measurements of the one or more current sensors (320) and the voltage sensor or electric field ( 321a, 321b). Similarly, the control module (710) can calculate the direction of current flow and Detect high impedance failures based on the measurement of the one or more current sensors (320) and the voltage or electric field sensor (321a, 321b).
- the device (100) may also include a wireless communications module (720) which includes one or more radio frequency modules (721).
- the communications module (720) may further comprise one or more modules for public and / or private cellular networks (722a), and / or one or more modules for public and / or private radio networks (722b).
- the device (100) can communicate with other devices, with a control panel, or in general with a SCADA type network.
- the wireless connection via radio frequency allows synchronization of two or more of the devices disclosed herein. When these devices are installed in phases other than a two-phase or three-phase circuit, synchronization allows the simultaneous interruption and reclosure of the two or three phases, guaranteeing agreement between them.
- the communication module (720) also allows communication of the device (100) with an external control panel (900) from which the control, configuration and monitoring of the device is carried out.
- the external control panel (900) also allows the device (100) to be operated remotely, thus avoiding the need for an operator to scale the pole in which the device (100) is installed, reducing the costs and times associated with Manual operation
- the connection between the communications module (720) and the external control panel (900) also allows manual and remote reconnection of the vacuum switch (210).
- the verification and reprogramming of the device software (100) can be performed through the external control panel (900) through the communications module (720).
- Figure 4 shows a non-limiting embodiment of the external control panel (900) according to the present invention wherein the external control panel (900) includes a display device in which device status parameters (100) are shown. .
- the control panel also includes an input element of data, for example, a numeric keypad, with which the operation modes of the device (100) are selected, its configuration parameters, and the possible instructions that are given, such as opening, closing and reading past events are defined .
- the device (100) according to the invention may also include one or more signaling means (500) with which its status is shown.
- These signaling means (500) can be light indicators (510), such as LEDs, and / or mechanical indicators (520).
- the mechanical indicators (520) according to the invention disclosed herein consist of an opaque element (521) disposed on a sheet (522) or other material containing strips of two or more colors. Depending on the state of the device (100) (closed or open), the opaque element (521) or the sheet (522) are moved so that one or more of the colored stripes are covered, such that the remaining stripes are visible through a window to the outside of the device (100).
- the signaling means (500) serve as redundant mechanisms so that an operator can know the status of the device (100) in case there are failures in the electronics of the device (100), the communication or the control panel.
- the opaque element (521) travels over the sheet (522) to cover one or more of the colored stripes, such that the remaining stripes are visible.
- the opaque element (521) maintains its position and the sheet (522) is moved such that one or more of the colored stripes are covered by the opaque element (521) and the remaining stripes are visible.
- the device (100) comprises a magnetic coupling mechanism (530) for operating at least one of the mechanical indicators (520).
- the opaque element (521) includes a magnetic material and its movement is due to the movement of the magnetic coupling mechanism (530) located on the rear side of the sheet (522).
- the mechanism of magnetic coupling (530) is mechanically attached to the shaft (430), such that when the vacuum switch (210) is closed the shaft (430) is in an elevated position so that the opaque element (521) of the Mechanical indicator (520) is in a first position and a first color of the sheet (522) is shown.
- FIGS. 5a and 5b show how the mechanical indicator (520) changes its position depending on the state of the device (100).
- the sheet (522) contains a magnetic material whose movement is due to the movement of the magnetic coupling mechanism (530) located behind the opaque element (521).
- the magnetic coupling mechanism (530) is mechanically connected to the shaft (430), such that when the vacuum switch (210) is closed the shaft (430) is in an elevated position so that the sheet (522) ) of the mechanical indicator (520) is in a first position and a first color of the sheet (522) is shown.
- the vacuum switch (210) is open shaft (430) is in a low position so that the sheet (522) of the mechanical indicator (520) is in a second position and a second is shown sheet color (522).
- Figures 5a and 5b show how the mechanical indicator (520) changes its position depending on the state of the device (100).
- the present invention also reveals that the device (100) is enclosed by a housing (810) composed of at least two independent parts: an upper part and a lower part.
- the housing (810) is made of a polymeric material that provides protection and impact resistance.
- the housing (810) is sealed around the device (100). Therefore, and in order to reduce the differences in pressure and temperature between the inside and outside of the device (100), the housing (810) can include a pressure relief valve (811) that allows to regulate the pressure and the temperature inside the device (100).
- the pressure relief valve (811) allows the pressure and temperature inside the device (100) to be equalized with the atmospheric conditions.
- Figure 6 shows a preferred embodiment of the pressure valve in the housing (810).
- the present invention further reveals that the device (100) may include an inner chassis (820) that supports the internal elements of the device (100) and maintains its alignment without relying on the outer shell (810).
- the device (100) comprises one or more connections to an external energy source (600) which It is selected from the group comprising: external batteries and energy harvesting elements, such as solar panels.
- the one or more connections to an external power source (610) allow the operation of the device (100) without line current, even when the super-capacitors (340) are discharged.
- the device (100) includes at least one connection to an external charger (611) consisting of contact points protruding from the housing (810) and which are counterpart of the terminals of the external charger (611).
- the installation of the external charger (611) can be carried out from the ground using a pole without the need to uninstall or de-energize the device (100).
- the housing (810) of the device (100) acts as a guide to facilitate the installation of the external charger (611).
- the charging terminals of the external charger (611) can have a hook shape in such a way as to facilitate their installation.
- Figure 7 shows a preferred and non-limiting embodiment of the external charger (611) and its connection to the device (100).
- the present invention reveals a connection with a data port (724) that allows the device (100) to establish a physical connection with an external control panel (900) for the transfer of data, electrical measurements and signals of control.
- the external control panel (900) is any device that allows sending and receiving data to and from the device (100), for example a computer, a man-machine interface (HMI), a test equipment, or a mobile device such as a smartphone.
- the connection between the device (100) and the external control panel (900) through the data port (724) also allows manual reconnection of the vacuum switch (210), as well as verification and reprogramming of the device software ( 100).
- the data port (724) is embedded in the housing (810) so that an operator can connect the external medium with ease. According to a preferred embodiment, the data port (724) is an IP67 port.
- the invention described herein reveals electrical connection points (830) integrated in the contacts upper and / or lower of the device (100) that allow an additional electrical connection between the device (100) and the exchangeable base (150). These connection points reduce the contact resistance between the device (100) and the exchangeable base (150).
- the electrical connection points (830) include standard connectors to which a first end of a conductor can be connected so that, when the second end of the conductor is connected to the interchangeable base (150), the electrical path between the device ( 100) and the exchangeable base (150) is reduced.
- the electrical connection points (830) allow cables to be connected between the device (100) and the exchangeable base (150).
- Figure 8 shows a preferred embodiment wherein the upper and lower connectors connecting the device (100) with the interchangeable base (150) include the electrical connection points (830) that allow a cable to be connected between the device (100 ) and the exchangeable base (150).
- the device (100) includes electrical connection points (830) only the one in lower contact, that is, next to the pivot with which the device (100) swings on the exchangeable base (150 ).
- the device (100) includes electrical connection points (830) only in the upper contact, that is, next to the contact with which the device (100) fits the interchangeable base (150).
- the device (100) includes electrical connection points (830) in both contacts with the exchangeable base (150).
- the device (100) When the device (100) includes at least one electrical connection point (830) for connecting with the upper contact of the exchangeable base (150), the device (100) further comprises a disconnecting mechanism (840) which allows undo this connection in order to eliminate mechanical ties that prevent the device from falling and swinging on the pivot when a visible disconnection is needed.
- This disconnection mechanism (840) can be activated remotely by the control panel (900) or manually by an operator using a pole or other suitable element.
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Power Sources (AREA)
- Emergency Protection Circuit Devices (AREA)
- Dc-Dc Converters (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/976,722 US11764564B2 (en) | 2018-06-20 | 2019-06-18 | Device for the automatic interruption and reconnection of medium-voltage circuits which can be installed in interchangeable bases |
PE2020001855A PE20201439A1 (es) | 2018-06-20 | 2019-06-18 | Dispositivo para la interrupcion y reconexion automatica de circuitos de media tension instalable en bases intercambiables |
MX2020013048A MX2020013048A (es) | 2018-06-20 | 2019-06-18 | Dispositivo para la interrupcion y reconexion automatica de circuitos de media tension instalable en bases intercambiables. |
BR112020023046-4A BR112020023046A2 (pt) | 2018-06-20 | 2019-06-18 | Dispositivo para a interrupção e reconexão automática de circuitos de média tensão instalável em bases intercambiáveis |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CONC2018/0006379A CO2018006379A1 (es) | 2018-06-20 | 2018-06-20 | Dispositivo para la interrupción y reconexión automática de circuitos de media tensión instalable en bases intercambiables |
CONC2018/0006379 | 2018-06-20 |
Publications (1)
Publication Number | Publication Date |
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WO2019244034A1 true WO2019244034A1 (es) | 2019-12-26 |
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PCT/IB2019/055104 WO2019244034A1 (es) | 2018-06-20 | 2019-06-18 | Dispositivo para la interrupción y reconexión automática de circuitos de media tensión instalable en bases intercambiables |
Country Status (7)
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US (1) | US11764564B2 (es) |
BR (1) | BR112020023046A2 (es) |
CL (1) | CL2020002882A1 (es) |
CO (1) | CO2018006379A1 (es) |
MX (1) | MX2020013048A (es) |
PE (1) | PE20201439A1 (es) |
WO (1) | WO2019244034A1 (es) |
Cited By (2)
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US20210318393A1 (en) * | 2020-04-10 | 2021-10-14 | Hamilton Sundstrand Corporation | Differential protection scheme |
US20220102974A1 (en) * | 2020-09-30 | 2022-03-31 | S&C Electric Company | Transformer for underground radial loop network |
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CN114664542B (zh) * | 2022-05-23 | 2022-11-25 | 深圳市斯比特电子有限公司 | 一种双节点安全保护的电动车用充电桩变压设备 |
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Also Published As
Publication number | Publication date |
---|---|
MX2020013048A (es) | 2021-02-26 |
CO2018006379A1 (es) | 2018-07-10 |
US11764564B2 (en) | 2023-09-19 |
US20200412122A1 (en) | 2020-12-31 |
PE20201439A1 (es) | 2020-12-09 |
BR112020023046A2 (pt) | 2021-04-13 |
CL2020002882A1 (es) | 2021-06-11 |
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