CN114498670A - Low-voltage switch capacitance compensation cabinet based on Internet of things - Google Patents
Low-voltage switch capacitance compensation cabinet based on Internet of things Download PDFInfo
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- CN114498670A CN114498670A CN202210183785.5A CN202210183785A CN114498670A CN 114498670 A CN114498670 A CN 114498670A CN 202210183785 A CN202210183785 A CN 202210183785A CN 114498670 A CN114498670 A CN 114498670A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/24—Circuit arrangements for boards or switchyards
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
- H02J13/00017—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus using optical fiber
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- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
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- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
- H02J13/00026—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission involving a local wireless network, e.g. Wi-Fi, ZigBee or Bluetooth
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00028—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment involving the use of Internet protocols
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- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/01—Arrangements for reducing harmonics or ripples
Abstract
The invention discloses a low-voltage switch capacitance compensation cabinet based on the Internet of things, which comprises a cabinet body; the cabinet body comprises a first incoming line connected with a main bus of the incoming line cabinet, a fuse knife switch connected with the first incoming line, a capacitor module connected with the fuse knife switch, and a first measurement and control module used for measuring a connecting line between the fuse knife switch and the capacitor module; wherein the capacitance module comprises a power capacitor; the first measurement and control module is provided with a capacitor cabinet communication interface connected with the communication module of the incoming line cabinet; the communication module is used for transmitting the measurement result obtained by the first measurement and control module to a network terminal; and a dynamic configuration diagram of the capacitance compensation cabinet is displayed on a human-computer interface of the incoming line cabinet, and the dynamic configuration diagram of the capacitance compensation cabinet shows an electrical schematic diagram and a real-time working state of the capacitance compensation cabinet in a dynamic diagram form.
Description
Technical Field
Embodiments of the present disclosure relate generally to the field of low voltage power distribution, and more particularly, to an internet of things-based low voltage switch capacitance compensation cabinet.
Background
A common low-voltage Power distribution switch system generally includes an incoming line cabinet (also called a Power receiving cabinet, for receiving Power from a Power grid), an outgoing line cabinet (also called a feed cabinet or a Power distribution cabinet, for distributing Power), a capacitance compensation cabinet (also called a capacitor cabinet, a compensation cabinet, for improving Power factor), a reactive compensation cabinet (also called an SVG cabinet, i.e., a static var generator, SVG for short, for improving Power factor), an Active Filter cabinet (also called an APF cabinet, an Active Power Filter, APF for short, for filtering), and a bus coupler cabinet (also called a coupler cabinet, a bus bar breaking cabinet, for connecting two segments of buses).
In the widely used low-voltage distribution switch system at present, each cabinet (especially a capacitance compensation cabinet) has no network internet of things capability, so that the data collection and transmission capability is poor, a large amount of power distribution operation data is not collected and uploaded, the operation guarantee and the daily management means are backward, and the intellectualization cannot be realized. For example, the current cabinet often uses panel meters to display a small amount of random data, can not comprehensively master the operation data of the cabinet, and because the data collection and transmission capabilities are poor, a higher operation risk is easily generated, so that the cabinet needs to be manually attended for 24 hours, regularly observed and monitored through manual meter reading records, and the cabinet does not have intensive management conditions, and the human-computer interaction is also very inconvenient and intuitive.
In addition, each cabinet (especially a capacitance compensation cabinet) in the existing low-voltage distribution switch system has poor performance in the aspect of human-computer interaction capability, cannot comprehensively know the operation condition of each cabinet in real time, and is easy to cause key data loss, so that the safe operation is not guaranteed. Once a fault and an accident occur, the existing cabinet body needs to be manually judged and checked, so that the fault diagnosis time is long, and the influence on the use of a user is large. In addition, the existing low-voltage distribution electric switch system is lack of the capability of the internet of things, so that historical data in the operation process cannot be collected, stored and transmitted, the positioning of events and accident recall after faults occur are very difficult, and good traceability and analysis improvement capability are lacked.
Disclosure of Invention
It is a primary object of the present invention to provide an internet of things-based low-voltage switched capacitor compensation cabinet to address at least one of the above problems and other potential problems in the prior art.
In order to achieve the aim, the invention provides a low-voltage switch capacitance compensation cabinet based on the Internet of things, which comprises a cabinet body; the cabinet body comprises a first incoming line connected with a main bus of the incoming line cabinet, a fuse knife switch connected with the first incoming line, a capacitor module connected with the fuse knife switch, and a first measurement and control module used for measuring a connecting line between the fuse knife switch and the capacitor module; wherein the capacitance module comprises a power capacitor; the first measurement and control module is provided with a capacitor cabinet communication interface connected with the communication module of the incoming line cabinet; the communication module is used for transmitting the measurement result obtained by the first measurement and control module to a network terminal; and a dynamic configuration diagram of the capacitance compensation cabinet is displayed on a human-computer interface of the incoming line cabinet, and the dynamic configuration diagram of the capacitance compensation cabinet shows an electrical schematic diagram and a real-time working state of the capacitance compensation cabinet in a dynamic diagram form.
According to the embodiment of the invention, the electric schematic diagram of the capacitance compensation cabinet shows the switch states of the knife-fuse switch by different colors; the real-time working state of the capacitance compensation cabinet comprises at least one of the following items: split-phase current, active power and temperature in the cabinet.
According to an embodiment of the invention, the switching states of the knife-fuse switch comprise a closing state indicated by red and an opening state indicated by green.
According to an embodiment of the invention, the first measurement and control module comprises at least one of: the first current measurement loop measures the current of the connecting line by adopting a current transformer; a first voltage measurement circuit interconnected with the connection line via a fuse for measuring a voltage; and the first temperature measurement loop adopts a temperature sensor to measure the temperature of the connecting wire.
According to an embodiment of the present invention, the capacitance module further includes a compensation controller that controls an amount of compensation according to the current of the connection line and the voltage of the connection line so as to control a power factor.
According to an embodiment of the present invention, the first measurement and control module further comprises a controller, the controller comprising at least one of: the cabinet body state monitoring module is used for monitoring at least one of working parameters, energy consumption states and switch states of the pipe control nodes in the cabinet body; the load state monitoring module is used for monitoring at least one of working parameters, energy consumption states and switch states of the load; the electric fire monitoring module is used for monitoring residual current and temperature measurement in the cabinet body and giving an open circuit or short circuit alarm when fire hazards exist; the power parameter monitoring module is used for monitoring at least one of split-phase voltage, split-phase current, zero line current, split-phase active power, split-phase reactive power, split-phase apparent power and split-phase apparent power in the cabinet body; the electric energy metering monitoring module is used for monitoring at least one of split-phase active electric energy, combined-phase active electric energy, split-phase reactive electric energy and combined-phase reactive electric energy in the cabinet body; a power quality monitoring module; the phase-splitting power factor monitoring device is used for monitoring at least one of phase-splitting power factor, phase-combining power factor, phase-splitting harmonic current and phase-combining harmonic current in the cabinet body.
According to the embodiment of the invention, the incoming line cabinet comprises a second incoming line for receiving the input of a low-voltage power supply, a circuit breaker connected with the second incoming line, a main bus connected with the circuit breaker, a second measurement and control module for measuring the main bus, a communication module for transmitting the measurement result obtained by the second measurement and control module to the network end, and a human-computer interface for interacting with an operator; one end of the breaker is connected with the second incoming line, and the other end of the breaker is connected with the main bus.
According to the embodiment of the invention, the communication module is connected with a communication interface of a wire inlet cabinet of the second measurement and control module through an RS485 interface, the second measurement and control module receives a control signal which is transmitted from the network end through the communication module, and the control signal comprises a signal for controlling the on-off state of the circuit breaker; the communication module is connected with the human-computer interface through an RS232 data interface and is communicated with a network switch, a gateway and the internet of the network end through an Ethernet interface.
According to an embodiment of the invention, the human-machine interface is further capable of displaying at least one of the following of the low-voltage switched capacitance compensation cabinet: split-phase voltage, split-phase current, zero line current, split-phase active power, split-phase reactive power, split-phase apparent power, split-phase active electric energy, split-phase reactive electric energy, split-phase power factor, frequency, cabinet temperature, phasor diagram, split-phase harmonic current, fundamental current, 3-31 harmonic current split-phase histogram.
According to an embodiment of the present invention, the network further comprises a server, which includes at least one of the following functions: an online data presentation function that presents at least one of the following data of the low-voltage switch capacitance compensation cabinet: split-phase voltage, split-phase current, zero line current, split-phase active power, split-phase reactive power, split-phase apparent power, split-phase active electric energy, split-phase reactive electric energy, split-phase power factor, frequency, cabinet temperature, phasor diagram, split-phase harmonic current, fundamental current, 3-31 th harmonic current split-phase histogram; the online dynamic configuration diagram display function is used for displaying an electrical schematic diagram and a real-time working state of the low-voltage switch capacitance compensation cabinet in a dynamic diagram form; an online carbon emission statistical function for counting and exhibiting at least one of the following in an area to which the capacitance compensation cabinet is applied: peak flat valley electric quantity proportion condition, energy consumption statistic condition, item energy consumption condition and classified energy consumption proportion condition; an online energy flow graph presentation function that presents, in energy flow graph form, at least one of: energy flow direction, node power supply data, load energy consumption data, power transformation loss data and transmission loss data.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a low-voltage power distribution switch system based on the internet of things according to an embodiment of the invention.
FIG. 2 is a schematic diagram (in the form of a single-line diagram) of a partial electrical structure of a capacitance compensation cabinet according to an embodiment of the present invention.
FIG. 3 is a schematic diagram (in the form of a circuit diagram) of a partial electrical structure of the capacitance compensation cabinet according to the embodiment of the present invention.
Fig. 4 is a dynamic configuration diagram of the inlet cabinet of the human-machine interface in the inlet cabinet according to the embodiment of the invention.
Fig. 5 is a schematic diagram (in the form of a single-line diagram) of a partial electrical structure of the inlet cabinet according to the embodiment of the present invention.
Fig. 6 is a schematic electrical structural diagram (in the form of a circuit diagram) of a portion of the inlet cabinet according to the embodiment of the present invention.
Fig. 7 is a schematic diagram (in the form of a circuit diagram) of a partial electrical structure of the inlet cabinet according to the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the precedence of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. In the description of the present invention, unless explicitly defined otherwise, the terms "connect", "connecting", and the like are to be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above terms in the present invention according to the specific content of the technical solutions, for example, the "connect" may be an electrical connection, or a circuit connection; may be directly connected or indirectly connected through an intermediate. The term "include" and variations thereof as used herein are open-ended, i.e., "including but not limited to". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment". Relevant definitions for other terms will be given in the following description.
As shown in fig. 1-7, an embodiment of the present invention provides an internet-of-things-based low-voltage distribution switch system (also referred to as an internet-of-things-based low-voltage switchgear assembly, or an internet-of-things-based low-voltage switchgear assembly), which includes an incoming line cabinet 100 (also referred to as a receiving cabinet, a Power incoming line cabinet, as shown by a dashed box in fig. 5) for receiving Power from a Power grid, an outgoing line cabinet 200 (also referred to as a feeding cabinet or a Power distribution cabinet for distributing Power), a capacitance compensation cabinet 300 (also referred to as a capacitor cabinet, a compensation cabinet for improving Power factor, as shown by a dashed box in fig. 2), a reactive compensation cabinet 400 (also referred to as an SVG cabinet, i.e., a static var generator, as svg., for improving Power factor), an Active Filter cabinet 500 (also referred to as an APF cabinet, as an Active Power Filter, as APF, for filtering), a buscouple cabinet 600 (also referred to as a tie cabinet, a Power Filter cabinet, as an Active Power Filter, as an Active Filter, a passive switch, a passive Filter, a passive switch, a, The bus connection cabinet and the bus breaking cabinet are used for connecting two sections of buses). In which, by the structure of the inlet box 100, the input low voltage (typically 220V or 380V obtained after 10KV in the grid is stepped down by the transformer) can be introduced into the low voltage distribution system. For example, the incoming cabinet 100, the outgoing cabinet 200, the capacitance compensation cabinet 300, etc. in the low-voltage distribution switch system can all be in the form of a draw-out low-voltage switch cabinet (where the outgoing cabinet 200 can be a drawer-type switch cabinet), and are more convenient to use and maintain.
As shown in fig. 2-7, the low-voltage switch capacitance compensation cabinet 300 based on the internet of things according to the embodiment of the present invention (which may be in the form of a draw-out low-voltage switch cabinet as shown by a dashed box in fig. 2, and is more convenient for use and maintenance) includes a cabinet body. The cabinet body includes the first inlet wire 301 of being connected with the main bus 103 of inlet wire cabinet, with the sword fused switch 302 that first inlet wire 301 is connected, with the electric capacity module 303 of sword fused switch 302 line connection and be used for to sword fused switch 302 with the first observing and controlling module 305 of connecting wire 304 between the electric capacity module 303 carries out the measurement.
Wherein the capacitance module 303 comprises a power capacitor 3031; the first measurement and control module 305 is provided with a capacitance cabinet communication interface 3051 connected to the communication module 106 of the incoming line cabinet (i.e. the capacitance compensation cabinet 300 and the incoming line cabinet 100 share one communication module, so that the overall structure is simple and efficient, and the cost is lower); the communication module 106 is configured to transmit the measurement result obtained by the first measurement and control module 305 to the network 105.
It can be understood that, in the present invention, the first measurement and control module 305 is arranged in the capacitance compensation cabinet 300, and the measurement result obtained by the first measurement and control module 305 can be transmitted to the network terminal 105 through the communication module 106, so that the capacitance compensation cabinet 300 has the capability of internet of things, can collect various data (for example, a large amount of data such as current, voltage, temperature, etc.) in the cabinet body in real time, and can upload the data to the network terminal 105 through the network (to implement functions such as storage, analysis, etc.), thereby implementing the capacitance compensation cabinet based on internet of things. Therefore, local unattended operation or unattended operation of the distribution rooms can be achieved, and the distribution rooms can be subjected to intensive network monitoring, so that the working intensity is reduced, the working efficiency is improved (intensive management conditions are achieved), and the operation cost is reduced. When the operation is abnormal, the alarm can be rapidly sent out, the fault can be rapidly positioned, the loss is prevented from being enlarged, and the original data tracing is provided for event processing. And because a large amount of historical data and real-time data can be uploaded and stored, the analysis can be carried out in real time, and powerful support can be provided for fault diagnosis and improvement perfection of the whole power distribution system. In addition, the capacitance compensation cabinet 300 based on the internet of things can also be linked with video equipment to synchronously record video screenshots of the operation of each control node in the power distribution process, so that the record of the operation image can be provided.
According to an embodiment of the present invention, a dynamic configuration diagram (not shown, only the reactive power cabinet dynamic configuration diagram 111 of the reactive power compensation cabinet 400 and the bus coupler cabinet dynamic configuration diagram 112 of the bus coupler cabinet 600 are shown in fig. 4) of the capacitance compensation cabinet 300 is displayed on the human-machine interface 107 of the inlet cabinet 100 (that is, the dynamic configuration diagram of the capacitance compensation cabinet can be integrally displayed on the human-machine interface 107 of the inlet cabinet, for example, the SVG cabinet in fig. 4 is replaced, so that the real-time status of the inlet cabinet, the capacitance cabinet, and other cabinets can be conveniently and intensively observed, and the dynamic configuration diagram of the capacitance compensation cabinet displays the electrical schematic diagram and the real-time working status of the capacitance compensation cabinet in a dynamic diagram form.
According to the embodiment of the invention, the electric principle diagram of the capacitance compensation cabinet shows the switch state of the knife-shaped fused switch by different colors; the real-time working state of the capacitance compensation cabinet comprises at least one of the following items: split-phase current, active power and temperature in the cabinet. According to an embodiment of the invention, the switching states of the knife-fuse switch comprise a closing state indicated by red and an opening state indicated by green.
It can be understood that the electric schematic diagram and the real-time working state of the capacitance compensation cabinet are displayed in a manner of innovatively using the dynamic configuration diagram of the capacitance compensation cabinet, so that monitoring is not required through manual meter reading records, and man-machine interaction is very convenient and intuitive, so that the performance of the capacitance compensation cabinet in the low-voltage distribution electric switch system is greatly improved in the aspect of man-machine interaction capacity, the running condition of the capacitance compensation cabinet can be comprehensively solved in real time, and safe running is guaranteed. Once a fault and an accident occur, the judgment can be intuitively carried out, so that the fault diagnosis time is short, and the influence on the normal use of a user is small.
According to an embodiment of the present invention, the first measurement and control module 305 includes a first current measurement loop 3052, a first voltage measurement loop 3053, and a first temperature measurement loop 3054. The first current measurement loop 3052 measures the current of the connection line 304 by using a current transformer; a first voltage measurement loop 3053 interconnected with said connection line 304 via a fuse for measuring a voltage; the first temperature measurement circuit 3054 measures the temperature of the connection line 304 using a temperature sensor.
By way of example, capacitance compensation cabinet 300 may be a governing node for the power factor of the incoming power supply (i.e., the power supply on first incoming line 301) of the low voltage switchgear cabinet set. The upper port of the knife-fuse switch 302 can be connected with the main bus 103, and the lower port can be connected (or connected via a reactor, not shown) with the capacitor module 303. Data in capacitance compensation cabinet 300 can be measured by first measurement and control module 305. For example, the current of the connection line 304 may be collected by a current transformer at the lower port of the knife switch 302 and transmitted to the first measurement and control module 305. The voltage of the connection line 304 can be used for collecting the voltage of the lower port of the knife switch 302 and transmitting the voltage to the first measurement and control module 305 through the fuse. The temperature of the connection line 304 may be collected by a temperature sensor, for example, and transmitted to the first measurement and control module 305. In addition, the switch state of the fuse knife switch 302 can be collected to switch auxiliary contact signals and transmitted to the first measurement and control module 305. The knife-fuse switch 302 can be controlled by the first measurement and control module 305, and the first measurement and control module 305 can transmit a control signal to a switch control contact of the knife-fuse switch 302, so that the first measurement and control module 305 manages and controls on and off of the knife-fuse switch 302. After data acquisition and/or conversion are completed, the first measurement and control module 305 may be connected to the network and human-machine interface 107 through the communication module 106 (digital communication module) of the inlet cabinet 100, so as to implement network management and control and management of the capacitance compensation cabinet 300 by using the human-machine interface of the inlet cabinet 100.
According to an embodiment of the present invention, the capacitance module further includes a compensation controller 3032 controlling an amount of compensation according to the current of the connection line and the voltage of the connection line so as to control a power factor.
As an example, the compensation controller 3032 may control the compensation amount according to the collected voltage of the connection line 304 and the collected current through the current transformer of the connection line 304, so as to control the power factor, for example, to realize the power factor control of the incoming power supply (i.e. the power supply on the first incoming line 301).
According to an embodiment of the invention, the first measurement and control module further comprises a controller (not shown) comprising at least one of: the cabinet body state monitoring module is used for monitoring at least one of working parameters, energy consumption states and switch states of the pipe control nodes in the cabinet body; the load state monitoring module is used for monitoring at least one of working parameters, energy consumption states and switch states of the load; the electric fire monitoring module is used for monitoring residual current and temperature measurement in the cabinet body and giving an open circuit or short circuit alarm when fire hazards exist; the power parameter monitoring module is used for monitoring at least one of split-phase voltage, split-phase current, zero line current, split-phase active power, split-phase reactive power, split-phase apparent power and split-phase apparent power in the cabinet body; the electric energy metering monitoring module is used for monitoring at least one of split-phase active electric energy, combined-phase active electric energy, split-phase reactive electric energy and combined-phase reactive electric energy in the cabinet body; a power quality monitoring module; the phase-splitting power factor monitoring device is used for monitoring at least one of phase-splitting power factor, phase-combining power factor, phase-splitting harmonic current and phase-combining harmonic current in the cabinet body.
It can be understood that, through the controller in the first measurement and control module, can realize the information acquisition and the control of local monitoring node (for example, monitor nodes such as current transformer, fuse, temperature sensor in the inlet wire cabinet), for example, can monitor cabinet body state, load condition, electric fire hidden danger, electric power parameter, electric energy measurement, information such as electric energy quality, realize the localized collection and the processing of a large amount of data, and when needs are controlled or managed and controlled, directly move, thereby guarantee distribution system's whole safety, its thing networking ability has also been strengthened simultaneously.
As shown in fig. 5-7, according to an embodiment of the present invention, the inlet box 100 may include a second inlet 101 for receiving a low voltage power input (the low voltage power input may be obtained by transforming a high voltage power input 1000 by a transformer 2000, for example, a voltage of 220V or 380V is obtained by reducing a high voltage of 10KV by the transformer 2000), a circuit breaker 102 connected to the second inlet 101 (a detailed structure of the circuit breaker 102 is shown in an upper right portion of fig. 6, which is a schematic diagram of an electrical drawing), a main bus 103 connected to the circuit breaker 102, a second measurement and control module 104 for measuring the main bus 103, a communication module 106 for transmitting a measurement result obtained by the second measurement and control module 104 to a network terminal 105, and a human-machine interface 107 for interacting with an operator. One end 1021 of the circuit breaker 102 is connected to the second incoming line 101, and the other end 1022 of the circuit breaker is connected to the main bus 103.
As an example, the inlet cabinet 100 may be a power inlet management and control node of a low-voltage switchgear assembly. The upper port (i.e., one end 1021 of the circuit breaker 102) of the circuit breaker 102 is connected to the incoming power source (which receives low voltage power via the second incoming line 101), and the lower port (i.e., the other end 1022 of the circuit breaker 102) is connected to the main bus 103. Incoming line data (i.e., data to be monitored in the incoming line cabinet 100, including voltage, current, temperature, etc.) is measured by the second measurement and control module 104 (e.g., an intelligent measurement and control module). After the second measurement and control module 104 finishes data collection and/or conversion, the network terminal 105 and the human-computer interface 107 may be connected through a communication module 106 (e.g., a digital communication module), so as to implement network management and control and management of the human-computer interface of the cabinet.
As shown in fig. 4, a dynamic configuration diagram 108 of the inlet cabinet can be displayed on the human-computer interface 107 of the inlet cabinet 100, so as to display an electrical schematic diagram 109 and a real-time working state 110 of the inlet cabinet in a dynamic diagram form (in fig. 4, two inlet cabinets 100 are displayed, which correspond to a # 1 transformer and a # 2 transformer respectively, and dynamic configuration diagrams of two SVG cabinets and a bus-bar cabinet are displayed at the same time, so that integration and observation are facilitated.
According to an exemplary embodiment, the electrical schematic diagram 109 of the inlet cabinet 100 of the present invention shows the switch states of the circuit breakers 102 in different colors; the real-time operating status 110 of the inlet cabinet 100 includes at least one of the following: split-phase current, active power and temperature in the cabinet. In addition, the dynamic configuration diagram can display information such as early warning and alarming besides the switch state. As an example, the switch states of the circuit breaker 102 include a closing state indicated by red and an opening state indicated by green.
It can be understood that, because the invention innovatively uses the way of the inlet cabinet dynamic configuration diagram 108 to respectively display the electrical schematic diagram and the real-time working state of the inlet cabinet, the invention does not need to monitor through manual meter reading records, and the man-machine interaction is very convenient and intuitive, so that the performance of each cabinet (such as the inlet cabinet, the capacitance compensation cabinet and the like) in the low-voltage distribution electric switch system of the invention in the man-machine interaction capability is greatly improved, the running condition of each cabinet (such as the inlet cabinet, the capacitance compensation cabinet and the like) can be comprehensively known in real time, and the safe operation is ensured. Once a fault and an accident occur, the judgment can be intuitively carried out, so that the fault diagnosis time is short, and the influence on the normal use of a user is small.
According to an exemplary embodiment of the invention, the second instrumentation module 104 comprises at least one of: the second current measurement circuit 1041 measures the current of the main bus 103 by using a current transformer 1044; a second voltage measurement circuit 1042 interconnected with said main bus 103 via a fuse 1045 for measuring voltage; and a second temperature measuring circuit 1043, which measures the temperature of the main bus 103 by using a temperature sensor 1046.
For example, the current of the main bus 103 may be collected by a current transformer 1044 at the lower port of the circuit breaker 102 and transmitted to the second measurement and control module 104. The voltage of the main bus 103 can be collected to the voltage of the lower port of the circuit breaker 102 and transmitted to the second measurement and control module 104 through the fuse 1045. The temperature of the main bus 103 can also be obtained by a temperature sensor 1046 (e.g. a digital temperature sensor) to collect the temperature of the circuit breaker 102 and transmit the temperature to the second measurement and control module 104. In addition, the switch state of the circuit breaker 102 can be obtained by collecting the auxiliary contact signal of the circuit breaker 102 and transmitting the signal to the second measurement and control module 104. The circuit breaker 102 can be controlled by the second instrumentation module 104, for example, the second instrumentation module 104 can transmit a control signal to a control contact of the circuit breaker 102, so as to control a switch state, and further manage and control an incoming power supply (for example, an input power supply of the second incoming line 101).
According to the embodiment of the present invention, the communication module 106 may be connected to the incoming line cabinet communication interface 1047 of the second measurement and control module 104 through an RS485 interface 1061, and the second measurement and control module 104 receives a control signal transmitted from the network terminal 105 through the communication module 106, where the control signal includes a signal for controlling a switch state of the circuit breaker 102. The communication module 106 can be connected to the human-machine interface 107 via an RS232 data interface 1062 (or an RS485 interface, as shown in fig. 6), and can communicate with the network switch 1051, the gateway 1052 and the internet 1053 of the network end 105 via an ethernet interface 1063.
It can be understood that the RS485 interface (for example, using MODBUS RTU protocol) has faster data transmission rate and stronger capability, and thus is more suitable for transmitting a large amount of data collected by the first measurement and control module and the second measurement and control module. And the RS232 data interface transmits data with a data rate lower than that of the RS485 interface, so that the RS232 data interface is suitable for being connected with the human-computer interface 107 so as to transmit data suitable for being observed by human eyes. The ethernet interface 1063 (for example, using MODBUS TCP protocol) can convert the device layer communication network into 104 communication protocol via the gateway, and connect to, for example, a cloud platform through a private network or a public network, and implement network intensive management of each cabinet, such as an incoming line cabinet and a capacitor cabinet, by using, for example, the cloud platform, so that the single cabinet, such as an incoming line cabinet and a capacitor cabinet, has an internet of things capability. In addition, the power for the communication module 106 may be supplied by an auxiliary power interface connected to the bottom layer DC24V DC, or may be supplied through a UPS supply network.
For example, in an inlet cabinet and a capacitor cabinet, when a breaker/knife-fuse switch is closed, a power supply supplies power; when the breaker/knife-shaped fuse switch is disconnected, the power supply is powered off, so that the on-off (or on-off) control of the incoming line power supply and the outgoing line power supply is realized. Power supply and security data in the incoming line cabinet and the capacitor cabinet can be collected and reported in real time by respective measurement and control modules, and the state of the breaker/knife-fuse switch can be remotely controlled by the respective measurement and control modules by receiving network commands or can be locally manually controlled. The respective measurement and control modules in the incoming line cabinet and the capacitor cabinet can be connected with the equipment layer communication network through the shared communication module, so that the system is simple, efficient and low in cost. For example, power inlet wire node data can be collected and reported by a measurement and control module, voltage data can be collected from a main bus, current data can be collected through a current transformer, shell temperature and main bus temperature of a breaker/fused switch can be collected by a digital temperature sensor, the on-off state of the breaker/fused switch can be collected from a corresponding terminal of the breaker/fused switch, and the breaker/fused switch can be remotely controlled through a breaker/fused switch control terminal through a remote control signal.
According to an embodiment of the invention, the human-machine interface is further capable of displaying at least one of the following of the low-voltage switch capacitance compensation cabinet: split-phase voltage, split-phase current, zero line current, split-phase active power, split-phase reactive power, split-phase apparent power, split-phase active electric energy, split-phase reactive electric energy, split-phase power factor, frequency, cabinet temperature, phasor diagram, split-phase harmonic current, fundamental current, 3-31 harmonic current split-phase histogram.
According to an exemplary embodiment of the present invention, the network further includes a server (which may be a local server, a cloud server, or the like), which includes at least one of the following functions: the online carbon emission statistical method comprises an online data display function, an online dynamic configuration diagram display function, an online carbon emission statistical function and an online energy flow diagram display function.
The online data display function displays at least one of the following data of each cabinet (such as a capacitor cabinet and an incoming line cabinet): split-phase voltage, split-phase current, zero line current, split-phase active power, split-phase reactive power, split-phase apparent power, split-phase active electric energy, split-phase reactive electric energy, split-phase power factor, frequency, cabinet temperature, phasor diagram, split-phase harmonic current, fundamental current, 3-31 harmonic current split-phase histogram.
The online data display function can guarantee the overall safe operation of the power distribution switch system, for example, the online data display function can monitor all electric quantity data, electric fire data, energy consumption data, electric energy quality data and communication networks of power inlet line control nodes of a low-voltage power distribution system, count and analyze collected data, and detect abnormal classification early warning and alarming, so that the aims of actively preventing and realizing the safe operation of a power distribution and transformation system are fulfilled. In addition, the online data display function can also comprise the display of functions such as zero line current measurement, power flow measurement, switching value signal acquisition, multipoint temperature measurement, network control, local latching network control and the like.
The online dynamic configuration diagram display function is to display the electrical schematic diagram and the real-time working state of each cabinet (such as a capacitor cabinet and an incoming line cabinet) in a dynamic diagram form; the electrical schematic diagram of each cabinet shows the switch state by different colors; the real-time working state of each cabinet comprises at least one of the following items: split-phase current, active power and temperature in the cabinet.
It can be understood that the electrical schematic diagram and the real-time working state of each cabinet (such as a capacitor cabinet and an incoming line cabinet) can be displayed in the form of an online dynamic configuration diagram, and the online dynamic configuration diagram is very intuitive and convenient. Therefore, the monitoring is not needed through manual meter reading records, the human-computer interaction is very convenient and visual, the performance of each cabinet in the low-voltage distribution electric switch system is greatly improved in the aspect of human-computer interaction capacity, the running condition of each cabinet can be comprehensively known in real time, and the safe running is guaranteed. Once a fault and an accident occur, the judgment can be intuitively carried out, so that the fault diagnosis time is short, and the influence on the normal use of a user is small.
Wherein, the online carbon emission statistical function is used for counting and displaying at least one of the following items in the area where the low-voltage switch capacitance compensation cabinet based on the internet of things is applied: peak flat valley electric quantity proportion condition, energy consumption statistic condition, item energy consumption condition and classification energy consumption proportion condition. Wherein the online energy flow graph presentation function is to present at least one of the following items in an energy flow graph form: energy flow direction, node power supply data, load energy consumption data, power transformation loss data and transmission loss data.
It can be understood that the goals of energy saving and carbon reduction can be achieved through fine metering and carbon emission statistics. For example, energy consumption data of the incoming line node can be subjected to time-sharing statistics, itemization (for example, itemization statistics is performed according to each workshop), classification (for example, classification is performed according to illumination, refrigeration, heating, power and the like), zoning (for example, a certain building of a certain cell), special statistics and analysis, so that real-time energy consumption data change is monitored, and historical energy consumption data is traced, so that energy efficiency management and carbon emission statistics are realized. In addition, the transformer loss measurement and calculation and the transmission loss measurement and calculation can be carried out through the matching analysis with the superior node and the subordinate node, so that the online rapid diagnosis is realized, the loss abnormity and the energy consumption abnormity are found in time, and the data support is provided for the transformation of high-energy-consumption old equipment. In addition, the quality analysis can be carried out on the electric energy of the incoming line node, so that data support is provided for improving the electric energy quality and realizing energy conservation and consumption reduction. In addition, wave recording (such as fault wave recording) can be performed on abnormal data of the incoming line node, so that event recollection is provided.
In summary, the low-voltage switch capacitance compensation cabinet based on the internet of things is an intelligent power distribution cabinet of the internet of things, belongs to a new generation of 'interconnection + power' products, and forms a new generation of cross-boundary products integrating the technologies of power, electronics, communication, IT and the like. Compared with the traditional power distribution cabinet, the intelligent power distribution cabinet has the functions of precise measurement and control and internet and adopts a human-computer interface for interactive display, so that the intelligent power distribution cabinet has the capability of monitoring all-node online data. The low-voltage distribution switch system (such as the incoming line cabinet 100, the outgoing line cabinet 200, the capacitance compensation cabinet 300, the reactive compensation cabinet 400, the active filter cabinet 500, the bus connection cabinet 600 and the like) integrates full electric quantity measurement, switching quantity measurement, electric energy quality measurement and electric fire monitoring, and can be matched with a cloud platform to form an intelligent distribution system, an energy management system, an electric fire monitoring system and an intelligent operation and maintenance system, so that the low-voltage distribution switch system is a system data acquisition and distribution control terminal. The low-voltage distribution switch system (such as the incoming line cabinet 100, the outgoing line cabinet 200, the capacitance compensation cabinet 300, the reactive compensation cabinet 400, the active filter cabinet 500, the bus coupler cabinet 600 and the like) can realize intelligent operation and maintenance, energy management and control, electric fire monitoring, carbon emission statistics and distribution network full-node operation data application, can realize energy efficiency management, electricity utilization monitoring and energy consumption early warning, and provides energy-saving potential key data such as power transformation loss measurement, transmission loss measurement, load energy consumption measurement and the like. By adopting the scheme of the invention, the aim of data driving decision can be realized, and the intelligent application of the intelligent power distribution cabinet of the Internet of things can provide data support and implementation strategies for energy-saving management and energy-saving reconstruction.
The modules and functions described in this disclosure may be performed, at least in part, by one or more hardware logic components. By way of example, and not limitation, illustrative types of hardware logic components that may be used include Field Programmable Gate Arrays (FPGAs), Application Specific Integrated Circuits (ASICs), Application Specific Standard Products (ASSPs), system on a chip (SOCs), Complex Programmable Logic Devices (CPLDs), and the like. The "signals", "control signals" described in this disclosure may be implemented by computer program instructions, such as instructions or commands stored on a computer readable storage medium. The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.
The computer program instructions for carrying out operations of the present disclosure may be assembler instructions, Instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, by utilizing the state information of computer-readable program instructions to personalize an electronic circuit, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA), the electronic circuit can execute the computer-readable program instructions to implement the respective functions of the present invention.
From the above description of the embodiments, it will be clear to those skilled in the art that the present invention may be implemented by other structures, and the features of the present invention are not limited to the above preferred embodiments. Any changes or modifications that can be easily conceived by those skilled in the art are also intended to be covered by the scope of the present invention.
Claims (10)
1. A low-voltage switch capacitance compensation cabinet based on the Internet of things is characterized by comprising a cabinet body;
the cabinet body comprises a first incoming line connected with a main bus of the incoming line cabinet, a fuse knife switch connected with the first incoming line, a capacitor module connected with the fuse knife switch, and a first measurement and control module used for measuring a connecting line between the fuse knife switch and the capacitor module;
wherein the capacitance module comprises a power capacitor; the first measurement and control module is provided with a capacitor cabinet communication interface connected with the communication module of the incoming line cabinet; the communication module is used for transmitting the measurement result obtained by the first measurement and control module to a network terminal; and a dynamic configuration diagram of the capacitance compensation cabinet is displayed on a human-computer interface of the incoming line cabinet, and the dynamic configuration diagram of the capacitance compensation cabinet shows an electrical schematic diagram and a real-time working state of the capacitance compensation cabinet in a dynamic diagram form.
2. The low-voltage switch capacitance compensation cabinet based on the Internet of things of claim 1, wherein the electrical schematic diagram of the capacitance compensation cabinet shows the switch state of the knife-melt switch in different colors;
the real-time working state of the capacitance compensation cabinet comprises at least one of the following items: split-phase current, active power and temperature in the cabinet.
3. The internet of things-based low-voltage switch capacitance compensation cabinet according to claim 2, wherein the switch states of the knife-fuse switch comprise a closing state represented by red and an opening state represented by green.
4. The internet of things-based low-voltage switch capacitance compensation cabinet according to any one of claims 1-3, wherein the first measurement and control module comprises at least one of:
the first current measurement loop measures the current of the connecting line by adopting a current transformer;
a first voltage measurement circuit interconnected with the connection line via a fuse for measuring a voltage;
and the first temperature measurement loop adopts a temperature sensor to measure the temperature of the connecting wire.
5. The IOT-based low-voltage switch capacitance compensation cabinet according to claim 4, wherein the capacitance module further comprises a compensation controller for controlling a compensation amount according to the current of the connection line and the voltage of the connection line so as to control a power factor.
6. The internet of things-based low-voltage switch capacitance compensation cabinet according to any one of claims 1-3, wherein the first measurement and control module further comprises a controller, the controller comprising at least one of:
the cabinet body state monitoring module is used for monitoring at least one of working parameters, energy consumption states and switch states of the pipe control nodes in the cabinet body;
the load state monitoring module is used for monitoring at least one of working parameters, energy consumption states and switch states of the load;
the electric fire monitoring module is used for monitoring residual current and temperature measurement in the cabinet body and giving an open circuit or short circuit alarm when fire hazards exist;
the power parameter monitoring module is used for monitoring at least one of split-phase voltage, split-phase current, zero line current, split-phase active power, split-phase reactive power, split-phase apparent power and split-phase apparent power in the cabinet body;
the electric energy metering monitoring module is used for monitoring at least one of split-phase active electric energy, combined-phase active electric energy, split-phase reactive electric energy and combined-phase reactive electric energy in the cabinet body;
a power quality monitoring module; the phase-splitting power factor monitoring device is used for monitoring at least one of phase-splitting power factor, phase-combining power factor, phase-splitting harmonic current and phase-combining harmonic current in the cabinet body.
7. The low-voltage switch capacitance compensation cabinet based on the Internet of things according to any one of claims 1-3, wherein the incoming cabinet comprises a second incoming line for receiving a low-voltage power supply input, a circuit breaker connected with the second incoming line, a main bus connected with the circuit breaker, a second measurement and control module for measuring the main bus, the communication module for transmitting a measurement result obtained by the second measurement and control module to the network side, and the human-computer interface for interacting with an operator; one end of the breaker is connected with the second incoming line, and the other end of the breaker is connected with the main bus.
8. The low-voltage switch capacitance compensation cabinet based on the internet of things of claim 7, wherein the communication module is connected with a communication interface of a wire inlet cabinet of the second measurement and control module through an RS485 interface, the second measurement and control module receives a control signal which is transmitted from the network terminal through the communication module, and the control signal comprises a signal for controlling the on-off state of the circuit breaker; the communication module is connected with the human-computer interface through an RS232 data interface and is communicated with a network switch, a gateway and the internet of the network end through an Ethernet interface.
9. The internet of things-based low-voltage switch capacitance compensation cabinet according to any one of claims 1-3, wherein the human-machine interface is further capable of displaying at least one of the following of the low-voltage switch capacitance compensation cabinet:
split-phase voltage, split-phase current, zero line current, split-phase active power, split-phase reactive power, split-phase apparent power, split-phase active electric energy, split-phase reactive electric energy, split-phase power factor, frequency, cabinet temperature, phasor diagram, split-phase harmonic current, fundamental current, 3-31 harmonic current split-phase histogram.
10. The internet of things-based low-voltage switch capacitance compensation cabinet according to any one of claims 1-3, wherein the network further comprises a server, which comprises at least one of the following functions:
an online data presentation function that presents at least one of the following data of the low-voltage switch capacitance compensation cabinet: split-phase voltage, split-phase current, zero line current, split-phase active power, split-phase reactive power, split-phase apparent power, split-phase active electric energy, split-phase reactive electric energy, split-phase power factor, frequency, cabinet temperature, phasor diagram, split-phase harmonic current, fundamental current, 3-31 th harmonic current split-phase histogram;
the online dynamic configuration diagram display function is used for displaying an electrical schematic diagram and a real-time working state of the low-voltage switch capacitance compensation cabinet in a dynamic diagram form;
an online carbon emission statistical function for counting and exhibiting at least one of the following in an area to which the capacitance compensation cabinet is applied: peak flat valley electric quantity proportion condition, energy consumption statistic condition, item energy consumption condition and classified energy consumption proportion condition;
an online energy flow graph presentation function that presents, in energy flow graph form, at least one of: energy flow direction, node power supply data, load energy consumption data, power transformation loss data and transmission loss data.
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| CN117691621A (en) * | 2024-01-31 | 2024-03-12 | 山东新大陆电力股份有限公司 | Low-voltage switch capacitance compensation cabinet based on Internet of things |
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Application publication date: 20220513 |