JP2021527381A - Multi-function integrated high voltage switchgear with digital control functionality - Google Patents

Abstract

A multifunctional integrated high voltage switchgear comprising a plurality of electrical devices and mechanisms having corresponding operating devices, wherein at least the first electrical device / mechanism of the electrical devices and mechanisms is a circuit breaker. At least the first operating device among the operating devices is a motor-operated operating device associated with the circuit breaker. In the multifunctionally integrated high voltage switchgear of the present invention, the motor-operated operating device is electrically driven so as to control the motor-operated operating device and at least a second operating device of the operating device. It is characterized by being operably connected to the control system.

Description

Description The present invention relates to a multifunctional high voltage switchgear, and more particularly to a multifunctional integrated high voltage switchgear having integrated digital control and communication functionality. For the present invention, the term "high voltage" is used to indicate an operating voltage above 1000 volt AC.

It is known from the prior art that high voltage devices can be associated in integrated switchgear that combines multiple functions such as circuit breaker functionality, disconnection functionality, grounding / high speed grounding functionality, and similar functionality. .. Examples of multifunction switchgear are gas-insulated switchgear, hybrid modules (eg ABB PASS modules), air-insulated switchgear, disconnection circuit breakers combined with ground switches, and similar switchgear.

In general, multifunctional high voltage switchgear has recently been replaced by PLC (Programmable Logic Control) to replace the traditional Local Control Cubicle (LCC) based on analog components such as relays and contactors. It is beginning to adopt electronic local control cubicles based on it. Multifunctional high voltage switchgear as described above requires a locally controlled cubicle to manage one or more disconnectors and / or ground switches and / or fast operating ground switches in addition to circuit breakers. ..

Circuit breakers, disconnectors, grounding switches, fast-acting grounding switches can be conveniently operated by dedicated electromechanical drives based on the use of gearmotors with single-stage or multi-stage mechanical reduction gear and also locally. It is known that the physical auxiliary contacts used by the control cubicles can be provided and they are linked to the local control cubicles through analog connectors and cables.

Auxiliary contacts are linked to the drive shaft by different mechanical measures, generally including gear reducers, endless screws, cam disc actuators, and similar equipment, which mechanical measures require some space in the drive housing. This has a significant impact on manufacturing costs.

In order to be connected to an electronic local control cubicle, each drive requires a dedicated I / O board with an A / D converter, which is the equipment to be managed (circuit breakers, disconnectors, ground switches, etc.) Depending on the number of fast-acting ground switches), this means that there is significant variability in space occupancy and cost in locally controlled cubicles.

In addition, the auxiliary contacts must be manually adjusted during production to compensate for tolerances. Due to its much smaller stroke than the main contacts of high voltage active components, this adjustment is usually a relatively long and complex process and requires a skilled operator. This process must be repeated each time the drive is reloaded onto a high voltage device, for example for shipping or maintenance.

Yet another drawback is that the use of conventional measures may limit control capabilities due to the maximum number of auxiliary contacts that can be incorporated into the drive housing. This problem is usually overcome by the use of relays in locally controlled cubicles, but such measures result in increased cost and space occupancy.

Based on the above considerations, it is necessary to have available technical measures for multifunctional high voltage switchgear that allow the above mentioned limitations and problems to be overcome.

Accordingly, it is an object of the present disclosure to provide a multifunctional integrated high voltage switchgear with digital control functionality that makes it possible to overcome at least some of the above drawbacks.

In particular, it is an object of the present disclosure to provide a simplified multifunctional integrated high voltage switchgear with fewer circuits and wiring as compared to conventional high voltage switchgear.

Furthermore, it is an object of the present disclosure to provide a multifunctional integrated high voltage switchgear with a simplified operating mechanism to achieve the desired functionality.

It is also an object of the present disclosure to provide a multifunctional integrated high voltage switchgear with a reduced number of analog components and at the same time increased or at least maintained functionality as compared to conventional high voltage switchgear. And.

In addition, the present disclosure is intended to provide a multifunctional integrated high voltage switchgear with simplified adjustment operation during manufacturing or maintenance.

Furthermore, it is an object of the present disclosure to provide a multifunctional integrated high voltage switchgear having a simpler and more compact structure in terms of both the number of cubicles required and the volume occupied by the components inside the cubicle. And.

It is also an object of the present disclosure to provide a multifunctional integrated high voltage switchgear that has a compact structure with a reduced number of components, is reliable, and is relatively easy to produce at a competitive cost. And.

Therefore, the present disclosure is a multifunctional integrated high voltage switchgear including a plurality of electrical devices and mechanisms having corresponding operating devices, wherein at least the first electrical device / mechanism of the electrical devices and mechanisms is. A circuit breaker, at least one of the operating devices, relates to a multifunctionally integrated high voltage switchgear, which is a motor-operated operating device associated with the circuit breaker. In the multifunctionally integrated high voltage switchgear of the present invention, the motor-operated operating device is electrically driven so as to control the motor-operated operating device and at least a second operating device of the operating device. It is characterized by being operably connected to a control system.

Thanks to the innovative construction of the control system of the multifunctional high voltage switchgear of the present invention, where multiple functions are integrated in the electrical / digital operating mechanism, as better described in the description below. , The above problems can be avoided or at least significantly reduced.

In practice, the multifunctional integrated high voltage switchgear of the present disclosure provides multiple functionalities associated with different electrical devices and mechanisms in exactly the same electrical drive control system, i.e., motor actuated operation of a circuit breaker. It can be integrated in the electrical drive control system of the device, eliminating the need for complex wiring and circuitry to functionally connect the various operating devices to the central control cubicle.

In other words, the functionality managed by the conventional central control cubicle based on the analog parts of the prior art switchgear in the multifunctionally integrated high voltage switchgear disclosed herein is the electrical drive control system present in the switchgear. Managed by. Thus, some of the electromechanical components currently in use in prior art systems can be replaced by simpler and cheaper sensors.

Therefore, as better described in the following description, in a typical embodiment of a multifunctionally integrated high voltage switchgear according to the present disclosure, the electric drive control system cuts off the control signal in the circuit. A signal is transmitted to the motor-operated operating device of the device and at least the second operating device, and a signal indicating an operating state of the motor-operated operating device and the second operating device of the circuit breaker is transmitted from them. Adapted to receive, thereby performing position sensing and control functionality for multiple operating devices.

In particular, in one embodiment of the multifunctionally integrated high voltage switchgear according to the present disclosure, one or more of the plurality of electrical devices and mechanisms is one or more of the plurality of electrical devices and mechanisms. Includes one or more auxiliary equipment adapted to transmit a state-of-the-art signal to said electric drive control system. For example, the signal indicating the operating state of one or more of the plurality of electric devices is a signal indicating an open or closed state of a ground switch, a signal indicating the position of a blocking mechanism in an interlock system, or the like. It can be a signal.

In one particular embodiment of the multifunction integrated high voltage switchgear, one or more of the operating devices will send a digital signal indicating the operating state of the one or more of the operating devices to the electric drive control system. Includes a digital interface adapted to transmit.

In practice, according to this embodiment, one or more analog auxiliary equipment in an operating device, such as an electromechanical drive for a disconnector, can be replaced by an electronic unit adapted to produce a digital signal. The operating device is then digitally connected to an electrically driven control system (locally controlled cubicle), for example by a serial port.

In this way, the electric drive control system can manage a certain number of operating devices (for example, electromechanical drive devices) using a single substrate without A / D conversion, saving space and cost. Strongly reduces variability.

In a typical embodiment of a multifunctionally integrated high voltage switch gear disclosed herein, the electrical equipment and mechanism may be, for example, a circuit breaker, disconnector, disconnect circuit breaker, grounding switch, fast operating grounding switch, combination. You can conveniently choose from one or more of the disconnectors and ground switches, blocks and interlocking mechanisms that have been made.

Representative examples of auxiliary equipment that can be used in the multifunctionally integrated high voltage switchgear disclosed herein are one or more of auxiliary contacts, position switches, position indicators, operating device protection relays, interlock relays. obtain.

In a preferred embodiment of the multifunctionally integrated high voltage switchgear disclosed herein, the electrically driven control system is also adapted to provide power supply to one or more of the electrical equipment and mechanisms.

In a highly preferred embodiment of a multifunctionally integrated high voltage switchgear, an electrically driven control system is also adapted to program control logic for one or more of said electrical equipment and mechanisms. In practice, according to this embodiment, if a functional modification for one or more operating devices is required, eg, an interlock functional modification for the grounding switch and block mechanism, such. Modifications can be easily made without physical changes by reprogramming the logical functions of the electrically driven control system.

In an exemplary embodiment of a multifunctionally integrated high voltage switch gear according to the present disclosure, the first electrical device of the electrical device is a circuit breaker having a corresponding first motor actuated operating device. Yes, and one or more additional electrical devices are selected from one or more of circuit breakers, ground switches, fast-acting ground switches, combined circuit breakers and ground switches, said one or more. Yet another electrical device is conveniently provided with a corresponding motor-operated operating device (driving device) that is in digital communication with the electrical drive control system.

For this purpose, one or more of the motor-operated operating devices are to transmit a digital signal indicating the operating state of the one or more of the motor-operated operating devices to the electric drive control system. Conveniently includes a digital interface adapted to.

In fact, according to this yet another exemplary embodiment of the multifunction integrated high voltage switchgear disclosed herein, electrical equipment (eg disconnectors, ground switches, fast operating ground switches, combined disconnects). The instrument and ground switch) are conveniently provided with a corresponding motor actuated operating device in which the auxiliary contacts and associated mechanical systems have been replaced by electronic units, including transducers. The transducer is adapted to detect the operating state of the corresponding electrical device and output a signal indicating the operating state.

The digital interface between the motor actuated operating device and the electrically driven control system may conveniently include an electronic board for transducer signal processing and position control. Such electronic boards can be incorporated into motor-operated operating devices or located in electrically driven control systems.

In this way, an electrically driven control system (locally controlled cubicle) can conveniently manage a number of motor-operated operating devices using a single board without A / D conversion, saving space and cost. And strongly reduce variability.

Further features and advantages of the present invention will become more apparent from the description of preferred but non-exclusive embodiments of the multifunctional integrated high voltage switchgear of the present invention, illustrated in the accompanying drawings.

It is a schematic block diagram of one general embodiment of the multifunction integrated high voltage switchgear according to this invention. FIG. 6 is a schematic block diagram of yet another general embodiment of a multifunctionally integrated high voltage switchgear according to the present invention. It is a schematic block diagram of an exemplary embodiment of a multifunctionally integrated high voltage switchgear according to the present invention.

The multifunctional integrated high voltage switchgear of the present disclosure, represented by reference numbers 1, 100 in its more general definition with reference to the accompanying drawings, is the corresponding operating devices 21, 31, 41; 521, 513. , 541. Includes a plurality of electrical devices and mechanisms 2, 3, 4; 502, 503, 504.

At least the first device / mechanism 2, 502 of the electrical device and mechanism is a circuit breaker, and generally, the electrical device and mechanism 3, 4; 503, 504 are, for example, a circuit breaker, disconnector. It can be one or more of a device, a disconnect circuit breaker, a grounding switch, a fast operating grounding switch, a combined disconnector and grounding switch, and a blocking mechanism.

The operating devices 21, 31, 41; 121, 131, 141; 521; 513, 541 are operably connected to the operating members 5, 6 and 7 (210, 310, 410). The operating members depend on the type of equipment, for example, the movable contact assembly of the circuit breaker, the movable contact assembly of the disconnector, the grounding blade of the grounding switch, the blocking mechanism of the cutting circuit breaker, and similar operating members. Can be.

One of the distinguishing features of the multifunctionally integrated high voltage switchgear 1, 100 of the present disclosure is that at least the first operating device of the operating devices is associated with the circuit breakers 2, 502 and is electrical. It is given by the fact that it is a motor actuated operating device 21; 521 operably connected to the drive control system 20; 520.

Yet another distinguishing feature of the multifunctionally integrated high voltage switchgear 1, 100 of the present disclosure is that the electric drive control system 20; 520 is solely the motor actuated operating device 21; 521 of the circuit breakers 2, 502. Not given by the fact that at least a second of the operating devices 31, 41; 531 and 541 are also adapted to control.

The electric drive control system 20; 520 is also conveniently provided with digital communication means 200 and / or analog communication means 85 and power supply means 8 for the customer interface.

Thus, with reference to FIG. 1, a plurality of functionalities associated with a plurality of different electrical devices and mechanisms 2, 3 and 4 can be integrated in the electrical drive control system 20 of the circuit breaker 2. Reduces the number of components required and simplifies system circuitry and wiring.

The electric drive control system 20 transmits control signals 202, 203, and 204 to the motor-operated operating device 21 of the circuit breaker 2 and the operating devices 31 and 41 of other devices and mechanisms 3 and 4. Fits conveniently. Further, the electric drive control system 20 is also conveniently adapted to receive signals 202, 203, 204 indicating the operating state of the corresponding operating devices 21, 31, 41 from the devices and mechanisms 2, 3, 4. Thereby, full control and monitoring of various devices and mechanisms 2, 3 and 4 are performed.

For this purpose, one or more of the electrical devices and mechanisms 2, 3 and 4 provides electrical drive control systems with signals 202, 203, 204 indicating the operating state of the electrical devices and mechanisms 2, 3 and 4. Conveniently includes one or more auxiliary equipment adapted to transmit to 20.

For example, the auxiliary equipment may be one or more of an auxiliary contactor, a position switch, a position indicator, a contactor, an operating device protection relay, and an interlock relay.

With reference to FIG. 3, in one embodiment of the multifunction integrated high voltage switchgear 100 according to the present disclosure, one or more of the operating devices 521, 531 and 541 are the corresponding operating devices 521, 531 and 541. Digital interfaces 51, 54, 57 adapted to transmit digital signals 53, 56, 59 indicating the operating state of the electric drive control system 520 may be conveniently included.

Preferably, as shown in FIG. 2, the electric drive control system 20 is also conveniently adapted to provide power supplies 82, 83, 84 to one or more of said electrical equipment and mechanisms 2, 3, 4. Will be done.

With reference to FIG. 3, in one exemplary embodiment of the present disclosure, the multifunction integrated high voltage switchgear 100 includes a circuit breaker 502 and the circuit breaker 502 is in the contact assembly 505 of the circuit breaker 502. It has a corresponding first motor actuated operating device 521 operably connected.

In addition, the multifunction integrated high voltage switch gear 100 is one or more additional electrical selected from one or more of disconnectors, grounding switches, fast operating grounding switches, combined disconnectors and grounding switches. Includes devices 503 and 504. Electrical devices 503, 504 are provided with corresponding motor actuated actuation devices 531, 541 (electric drive devices), which are operably connected to contact assembly 506, 507 of the corresponding devices 503, 504. ..

The motor-operated operating devices 531, 541 are in digital communication with the electric drive control system 520 (locally controlled cubicle) (53, 56, 59). For this purpose, the motor-operated operating devices 521, 531, 541 are provided with digital signals 53, 56, 59 indicating the operating state of one or more of the corresponding motor-operated operating devices 521, 531, 541. Digital interfaces 51, 54, 57 adapted to transmit to the electric drive control system 520 are conveniently provided.

One of the distinguishing features of this embodiment of the multifunction integrated high voltage switchgear 100 is the auxiliary contacts and associated mechanical systems normally present in the motor actuated operating devices 521, 531 and 541. Given by the fact that the operating states of electrical equipment 502, 503, 504 are detected and replaced by an electronic unit that includes a transducer adapted to output signals 52, 55, 58 indicating said operating state.

The digital interfaces 51, 54, 57 described above can then be located in the motor actuated operating devices 521, 531, 541 or the electrically driven control system 520 (locally controlled cubicle), transducer signal processing and position control 52, 55, 58. Includes an electronic substrate for the advantage.

The electric drive control system 520 can manage a number of motor-operated operating devices 521, 531 and 541 using a single substrate without A / D conversion, thereby saving space and cost. Strongly reduces variability.

In addition, the programmable electronics of the electrically driven control system 520 allow automatic offsetting of the transducers to compensate for tolerances without failure, eliminating the need for complex mechanical adjustments.

In addition, electronic units with transducers are generally more compact and less costly compared to mechanical auxiliary contact systems, thereby combining a variety of equipment (disconnectors, grounding switches, fast-acting grounding switches, etc.) It provides smaller and more economical motor-operated operating devices 521, 531 and 541 (electric drive devices) for disconnectors and ground switches).

Finally, as mentioned above, the use of conventional measures can limit control capabilities due to the maximum number of auxiliary contacts that can be incorporated into the drive housing. This problem is usually overcome by the use of relays in LCCs, which increases cost and space occupancy. The use of the electrically driven control system 520 and related features as disclosed herein essentially solves this problem because the inputs for control are virtually infinite.

It is possible to make some changes to the multifunctionally integrated high voltage switchgear devised in this way, all of which are within the scope of the appended claims. In practice, the materials used, as well as the accompanying dimensions and shapes, can be anything according to requirements and prior art.

Claims (11)

Multiple electrical devices and mechanisms (2) having (210, 310, 410) corresponding operating devices (21, 31, 41; 521, 531, 541) operably connected to operating members (5, 6, 7). 3,4; 502, 503, 504), the multifunctional integrated high voltage switchgear (1,100), wherein at least the first electrical device / mechanism of the electrical device and mechanism is a circuit breaker. (2; 502), at least the first operating device of the operating devices is a motor-operated operating device (21; 521) associated with the circuit breaker (2; 502).
The motor-operated operating device (21; 521) controls the motor-operated operating device (21; 521) and at least a second operating device (31, 41; 531, 541) of the operating devices. Multifunctional integrated high voltage switchgear (1,100), characterized in that it is operably connected to an electrically driven control system (20; 520) adapted for this purpose. The electric drive control system (20; 520) transmits control signals (202, 203, 204; 53, 56, 59) to the motor-operated operating device (21; 521) and at least the second operating device (31, 41; 531 and 541), and from them, a signal (202) indicating the operating state of the motor-operated operating device (21; 521) and the second operating device (31, 41; 531 and 541). , 203, 204; 53, 56, 59). The multifunctionally integrated high voltage switchgear (1,100) according to claim 1. One or more of the plurality of electrical devices and mechanisms (2, 3, 4; 502, 503, 504) is among the plurality of electrical devices and mechanisms (2, 3, 4; 502, 503, 504). One or more auxiliary equipment adapted to transmit a signal (202, 203, 204; 53, 56, 59) indicating the one or more operating states of the electric drive control system (20; 520). The multifunctional integrated high voltage switchgear (1,100) according to claim 1 or 2, characterized in that it comprises. One or more of the operating devices (21, 31, 41; 521, 531, 541) is the operating state of the one or more of the operating devices (21, 31, 41; 521, 531, 541). A preceding claim comprising a digital interface (51, 54, 57) adapted to transmit a digital signal (53, 56, 59) indicating the above to the electrically driven control system (20; 520). The multifunctional integrated high voltage switchgear (1,100) according to any one of the items. The electrical equipment and mechanisms (3, 4; 503, 504) are among circuit breakers, disconnectors, disconnecting circuit breakers, grounding switches, high-speed operating grounding switches, combined disconnectors and grounding switches, and block mechanisms. The multifunctional integrated high voltage switch gear (1,100) according to any one of the preceding claims, characterized in that it is selected from one or more. The multiple according to any one of claims 3 to 5, wherein the auxiliary equipment is selected from one or more of an auxiliary contactor, a position switch, an operating device protection relay, and an interlock relay. Function-integrated high-voltage switchgear (1,100). The electric drive control system (20; 520) provides power supply (82, 83, 84) to one or more of the electrical equipment and mechanisms (2, 3, 4; 502, 503, 504). And / or prior claims, characterized in that they are adapted to program control logic for one or more of said electrical equipment and mechanisms (2, 3, 4; 502, 503, 504). The multifunctional integrated high voltage switchgear (1,100) according to any one of the items. The first electrical device of the electrical devices is a circuit breaker (2,502) having a corresponding first motor actuated operating device (21; 521), and one or more further. Electrical equipment (3, 4; 503, 504) is selected from one or more of disconnectors, ground switches, fast-acting ground switches, combined disconnectors and ground switches, said electric drive control system. (20; 520) and any one of the preceding claims, characterized by having a corresponding motor actuated operating device (31, 41; 531, 541) in digital communication (53, 56, 59). Multi-function integrated high voltage switch gear (1,100) according to the section. One or more of the motor-operated operating devices (21, 31, 41; 521, 531, 541) is the motor-operated operating device (21, 31, 41; 521, 531, 541). It comprises a digital interface (51, 54, 57) adapted to transmit one or more operating states digital signals (53, 56, 59) to said electric drive control system (20; 520). The multifunctional integrated high voltage switchgear (1,100) according to claim 8. One or more of the motor-operated operating devices (21, 31, 41; 521, 531, 541) detects the operating state of the corresponding electrical equipment (2, 3, 4; 502, 503, 504). The multifunctional integrated high voltage switchgear according to claim 8 or 9, wherein the electronic unit includes a transducer adapted to output a signal (52, 55, 58) indicating the operating state. (1,100). The multifunctional integrated high voltage switch according to claim 10, wherein the digital interface (51, 54, 57) includes an electronic substrate for transducer signal processing and position control (52, 55, 58). Gear (1,100).

Images