CN110165776B - Electric energy transmission bus system suitable for high-altitude area - Google Patents
Electric energy transmission bus system suitable for high-altitude area Download PDFInfo
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- CN110165776B CN110165776B CN201910286337.6A CN201910286337A CN110165776B CN 110165776 B CN110165776 B CN 110165776B CN 201910286337 A CN201910286337 A CN 201910286337A CN 110165776 B CN110165776 B CN 110165776B
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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
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
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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
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
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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
- H02B1/56—Cooling; Ventilation
- H02B1/565—Cooling; Ventilation for cabinets
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- H02J13/0075—
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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
- H02J3/01—Arrangements for reducing harmonics or ripples
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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
- H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
- H02J3/16—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by adjustment of reactive power
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/22—Flexible AC transmission systems [FACTS] or power factor or reactive power compensating or correcting units
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses an electric energy transmission bus system suitable for high-altitude areas, which comprises a collector, a signal processor, a filtering unit, a signal conversion unit, a signal monitoring unit, a central processing unit, a signal correction unit, a signal stabilizing unit, a signal output unit, a circuit change-over switch, a dynamic harmonic correction device and a reactive power compensation device. The invention can reasonably configure the power grid, adaptively perform active or reactive compensation, reduce the loss of the power grid, improve the transmission quality of the power grid, ensure the continuity and stability of power transmission and avoid the waste of electric energy; the problems of inconvenient traffic, complex geographical environment, great difficulty in maintenance and high maintenance cost in the plateau area are solved, intelligent supervision control and configuration of electric energy transmission can be realized, the automation and intelligent management degree of the reactive power compensation device is effectively promoted, and the purposes of saving energy, reducing consumption and improving the economic benefit of power transmission are achieved.
Description
Technical Field
The invention belongs to the technical field of plateau power transmission equipment, and particularly relates to an electric energy transmission bus system which is stable in voltage and capable of reducing electric energy loss and is suitable for high-altitude areas.
Background
In an electric power system, especially an electric power system in a plateau area, during long-distance transmission, the transmission distance is long, the number of voltage reduction layers is large, the operation state is greatly influenced by the operation mode and the change of an electric power load, corresponding reactive power absorbed by each distribution line is different, and the problems of overlarge voltage fluctuation, overvoltage, harmonic wave and the like are caused. In different areas and different time periods, the power loads of all distribution lines in the power distribution network are different, the voltage of the circuit can be increased or decreased according to the change of the load quantity, and under the condition, reasonable compensation and adjustment are not carried out, so that not only can a large amount of electric energy be wasted, but also the power system can be broken down in serious conditions, and great loss is caused. In addition, the plateau area has inconvenient traffic and complex geographical environment, and brings great difficulty to maintenance, so that the power grid needs to be reasonably configured to ensure the stable voltage in power grid transmission and achieve the purposes of energy conservation and consumption reduction.
Therefore, how to effectively control and compensate the voltage of each distribution line in the power distribution network, improve the power quality, reduce the power grid loss and realize intelligent management is a problem to be considered by technical personnel in the field.
Disclosure of Invention
The invention aims to provide an electric energy transmission bus system which can effectively ensure the voltage stability in the transmission of a power grid and reduce the electric energy loss and is suitable for high-altitude areas.
The purpose of the invention is realized as follows: the collector is sequentially connected with the filtering unit, the signal conversion unit, the signal monitoring unit, the central processing unit, the signal correction unit, the signal stabilizing unit and the signal output unit, the circuit switch, the dynamic harmonic correction device and the reactive power compensation device, the filtering unit is sequentially connected with the signal conversion unit and the signal monitoring unit, the signal monitoring unit is respectively connected with the central processing unit, the signal correction unit and the signal stabilizing unit, the central processing unit is connected with the signal stabilizing unit, the signal stabilizing unit is connected with the signal output unit, the signal output unit is respectively connected with the circuit switch, the dynamic harmonic correction device and the reactive power compensation device, The circuit switching switch, the dynamic harmonic correction device and the reactive power compensation device are all connected with a power transmission cable.
Compared with the prior art, the invention has the following technical effects:
1. the intelligent controller controls the reactive compensation device to compensate and adjust the unstable voltage of a power supply system or power, can adaptively perform active or reactive compensation, reasonably compensate and adjust, is beneficial to improving the quality of input power, can delay the power failure of the frequency converter when an external power supply is suddenly cut off, further reserves the safe time of network switching, ensures the stable power supply of a power grid transmission system, and ensures the continuity and stability of power transmission; the intelligent supervision control can be realized, the compensation performance is good, and the automatic and intelligent management degree of the reactive power compensation device is promoted;
2. the reactive compensation capacity is large, the purpose of accurate compensation can be achieved, the power grid is reasonably configured, the loss of the power grid is reduced, the transmission quality of the power grid is improved, the breakdown and the major loss of a power system are avoided, and not only can a large amount of electric energy be wasted, but also the waste can be caused in a serious case; the problems of inconvenient traffic, complex geographical environment, great difficulty in maintenance and high maintenance cost in the plateau area are solved, and the purposes of saving energy, reducing consumption and improving the economic benefit of power transmission are achieved;
3. the intelligent monitoring control can be realized, the intelligent controller dynamically searches and tracks a harmonic source through dynamically adjusting the inductance of the variable reactor under the harmonic frequency, performs harmonic filtering on a power supply system or a power load, controls the capacitor capacity in the filtering system and the inductance of the variable reactor through the intelligent controller, keeps the resonance state of a power grid, absorbs the harmonic of the power grid, realizes the dynamic harmonic filtering of the composite power load, keeps the resonance state of the power grid, keeps the resonance frequency point unchanged, ensures the filtering effect, and ensures the load carried by the power grid to be safer, more reliable, more environment-friendly and more efficient; the intelligent power transmission system has stable and reliable operation and long service life, can effectively reduce the damage rate and the maintenance frequency of power transmission equipment, can meet the power transmission control requirement of a plateau far-middle short range, and improves the intelligent and automatic management degree, thereby achieving the purposes of reducing the management cost and improving the power transmission economic benefit;
4. the invention not only has good damp-proof and rain-proof effects, but also has good ventilation, heat dissipation and heat preservation effects while not affecting rain-proof, can normally and stably work in plateau environment, has low temperature resistance and frost resistance, has intelligent supervision function, can supervise internal conditions in real time, can timely eliminate moisture, dissipate heat and preserve heat, effectively solves the problems of poor use effect and easy damage of equipment in the power distribution cabinet, prolongs the service life of the power distribution cabinet, reduces the accident rate, reduces the maintenance frequency and cost, and ensures the stability and quality of the power grid operation, thereby achieving the purpose of improving the economic efficiency of power transmission;
5. the system can effectively eliminate interference signals generated in the signals transmitted by the frequency converter, keeps the signal transmission quality, is convenient to use due to the fact that the power utilization information management system is provided with various communication interfaces, and can be communicated with background data management systems with different communication interfaces, so that the working difficulty of electric field workers is reduced, the operation is simple, the cost of field electric meter information acquisition is low, the required time is short, the production automation degree and the production efficiency are improved, and the labor intensity of workers is reduced; by constructing the node cluster of the front communication unit, the data processing capacity is improved, the access requirements of massive terminals are met, dynamic increase and decrease of the nodes of the front communication unit can be realized, and different terminal access scales can be flexibly dealt with; the access of multiple protocol type terminals can be flexibly realized, and the method is suitable for the construction current situation that the current power company acquisition terminal is gradually updated and upgraded, so that the aims of improving the management efficiency, reducing the management cost expenditure and saving the cost are fulfilled.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a circuit switch according to the present invention;
FIG. 3 is a schematic structural diagram of a dynamic harmonic correction apparatus according to the present invention;
FIG. 4 is a schematic structural diagram of the harmonic elimination apparatus A in FIG. 3;
fig. 5 is a schematic structural diagram of the reactive power compensation device according to the present invention;
FIG. 6 is a schematic top view of the heat sink of the present invention;
reference numbers in the figures: 1-collector, 2-filter unit, 3-signal conversion unit, 4-signal monitoring unit, 5-central processing unit, 6-signal correction unit, 7-signal stabilization unit, 8-signal output unit, 9-circuit change-over switch, 9 a-upper change-over device, 9 b-lower change-over device, 9 c-switch drive, 9 d-active contact, 9 e-passive contact, 9 f-relay connector, 9 g-voltage detector, 9 h-upper relay pole, 9 i-lower relay pole, 9 j-voltage regulator, 9 k-fuse, 10-dynamic harmonic correction device, 10 a-cabinet, 10 b-mounting substrate, 10 c-heat-radiating plate, 10 d-heat-radiating fin, 10 e-compensating current detection unit, 10 f-harmonic current detection unit, 10 g-line voltage detection unit, 10 h-trigger protection unit, 10 i-first-level compensating filter unit, 10 j-secondary compensation filter unit, 10 k-filter capacitor bank, 10 m-filter reactor bank, 10 o-heat dissipation chamber, 10 p-air filtering mechanism, 10 q-ventilation fan, 10 r-adjusting plate, 10 s-adjusting drive, 10 t-temperature and humidity detector, 11-reactive power compensation device, 11 a-reactive compensator, 11 b-reactive voltage detector, 12-background management center, 13-communication unit, 14-alarm unit and 15-man-machine interaction device.
Detailed Description
The invention is further described with reference to the accompanying drawings, but the invention is not limited in any way, and any alterations or substitutions based on the teaching of the invention are within the scope of the invention.
As shown in fig. 1-6, the electric energy transmission bus system suitable for high-altitude areas includes a collector 1, a signal processor 2, a filter unit 2, a signal conversion unit 3, a signal monitoring unit 4, a central processing unit 5, a signal correction unit 6, a signal stabilization unit 7, a signal output unit 8, a circuit switch 9, a dynamic harmonic correction device 10, and a reactive power compensation device 11, wherein the collector 1 is sequentially connected with the filter unit 2, the signal conversion unit 3, the signal monitoring unit 4, the central processing unit 5, the signal correction unit 6, the signal stabilization unit 7, and the signal output unit 8, the filter unit 2 is sequentially connected with the signal conversion unit 3 and the signal monitoring unit 4, the signal monitoring unit 4 is respectively connected with the central processing unit 5, the signal correction unit 6, and the signal stabilization unit 7, the central processing unit 5 is connected with the signal stabilization unit 7, the signal stabilizing unit 7 is connected with the signal output unit 8, the signal output unit 8 is respectively connected with the circuit change-over switch 9, the dynamic harmonic correction device 10, the reactive power compensation device 11 and the background management center 12, and the circuit change-over switch 9, the dynamic harmonic correction device 10 and the reactive power compensation device 11 are all connected with a power transmission cable.
The transmission circuit between the central processing unit 5 and the signal monitoring unit 4 is connected through a double-loop transmission circuit, and the central processing unit 5 and the signal stabilizing unit 7 are connected through a double-loop transmission circuit; the signal correction unit 6 is internally provided with a plurality of storage circuits and an equalization coefficient transmission circuit, and is used for storing and equalizing equalization coefficients, and the signal correction unit 6 is connected with the signal monitoring unit 4 through a double-loop transmission circuit.
The circuit switch 9 comprises a current collecting mechanism arranged on the mounting frame, at least two upper switching devices 9a and two lower switching devices 9b, wherein the upper switching devices 9a are arranged at the upper end of the current collecting mechanism, and the lower switching devices 9b are arranged at the lower end of the current collecting mechanism; the upper switching device 9a and the lower switching device 9b each include a switching drive 9c, an active contact 9d, a passive contact 9e, a relay connector 9f, and a voltage detector 9g, the passive contacts 9e are symmetrically disposed on mounting frames on both sides of the current collecting mechanism through a fixing frame, the switching drives 9c are disposed on the mounting frames corresponding to the passive contacts 9e, the active contacts 9d movably matched with the passive contacts 9e are disposed on the switching drives 9c, the voltage detectors 9g are disposed on mounting substrates 10b on either side of the switching drives 9c, one end of each voltage detector 9g is connected to the active contact 9d through the relay connector 9f, and the other end is connected to the power transmission cable and the central processing unit 5 through wires.
The current collection mechanism comprises an upper relay rod 9h, a lower relay rod 9i, a voltage regulator 9j and a fuse 9k, the upper relay rod 9h is arranged on the upper switching device 9a and is connected with a passive contact 9e in each upper switching device 9a in series, the lower relay rod 9i is arranged on the lower switching device 9b and is connected with a passive contact 9e in each lower switching device 9b in series, the upper relay rod 9h sequentially comprises the voltage regulator 9j, the fuse 9k and the lower relay rod 9i through leads, and the voltage regulator 9j and the fuse 9k are arranged on the installation substrate 10 b; the switching drive 9c is a hydraulic power unit or an air cylinder, the active contact 9d and the moving contact are in plug-in fit in a concave-convex structure, and an insulating mounting seat is arranged between the switching drive 9c and the active contact 9 d; relay connection spare 9f one end connect fuse 9k, the other end is connected down the initiative contact 9d of switching device 9b, just relay connection spare 9f is for having elastic heliciform cable.
The dynamic harmonic correction device 10 comprises a cabinet body 10a and a mounting substrate 10b, wherein a cabinet door capable of opening and closing the cabinet body 10a is arranged on the cabinet body 10a, wire holes are arranged at the upper part and/or the lower part of the cabinet wall of the cabinet body 10a, the mounting substrate 10b is arranged on the rear wall of the cabinet body 10a through an insulating support, heat dissipation plates 10c matched with the mounting substrate 10b are arranged on the back surfaces of the mounting substrate 10b, heat dissipation fins 10d are arranged on the heat dissipation plates 10c, electric fixing holes are arranged on the front surface of the mounting substrate 10b, a harmonic elimination device is arranged at the upper part of the front surface of the mounting substrate 10b, and the harmonic elimination device is connected with and provided with a central processing; wherein, the harmonic elimination device comprises a compensation current detection unit 10e, a harmonic current detection unit 10f, a line voltage detection unit 10g, a trigger protection unit 10h, a first-stage compensation filter unit 10i and a second-stage compensation filter unit 10j, one end of the compensation current detection unit 10e is connected with the power transmission cable, the other end is sequentially connected with the harmonic current detection unit 10f and the line voltage detection unit 10g, the line voltage detection unit 10g is connected with the central processing unit 5, one end of the primary compensation filtering unit 10i is connected with the power transmission cable, the other end is connected with the trigger protection unit 10h, the second-stage compensation filter unit 10j is disposed on the power transmission cable at the rear end of the first-stage compensation filter unit 10i, the secondary compensation filtering unit 10j is connected with a trigger protection unit 10h, and the trigger protection unit 10h is connected with the central processing unit 5.
The primary compensation filtering unit 10i and the secondary compensation filtering unit 10j both comprise a filtering capacitor bank 10k and a filtering reactor bank 10m, one end of the filtering reactor bank 10m is connected with a power transmission cable, the other end of the filtering reactor bank is connected with the filtering capacitor bank 10k, and the filtering capacitor bank 10k is connected with the trigger protection unit 10 h; and the filter capacitor bank 10k at least includes two filter capacitors, the filter reactor bank 10m at least includes two filter reactors, and an electromagnetic contactor is provided between the filter reactor bank 10m and the power transmission cable.
The reactive power compensation device 11 comprises a cabinet body 10a, a mounting substrate 10b, a reactive power compensator 11a and a reactive voltage detector 11b, wherein the reactive power compensator 11a and the reactive voltage detector 11b are arranged on the mounting substrate 10b, a cabinet door capable of opening and closing the cabinet body 10a is arranged on the cabinet body 10a, wire holes are arranged at the upper part and/or the lower part of the cabinet wall of the cabinet body 10a, a circuit change-over switch 9 connected with a power transmission line is arranged at the upper part of the front face of the mounting substrate 10b, the reactive power compensator 11a is arranged at the middle lower part of the front face of the mounting substrate 10b, the circuit change-over switch 9 is connected with the reactive power compensator 11a and the central processing unit 5, and the reactive.
The lower part of the cabinet body 10a set up heat dissipation room 10o through the baffle, the well upper portion of the cabinet body 10a of heat dissipation room 10o UNICOM, the both ends of heat dissipation room 10o set up the window of admitting air respectively, it strains air mechanism 10p to be provided with on the window of admitting air the middle part of heat dissipation room 10o sets up ventilation fan 10q, and ventilation fan 10q connects each and strains air mechanism 10p, and ventilation fan 10q still connects central processing unit 5, be provided with the protection network on the ventilation window on cabinet body 10a both sides wall upper portion, set up the adjusting plate 10r of fitting in advance in the inboard of ventilation window, adjusting plate 10r connects and adjusts drive 10s, adjusts drive 10s control adjusting plate 10r and adjusts the ventilation window and opens and shuts, it still connects central processing unit 5 to adjust drive 10 s.
The ventilation fan 10q is a fan having a heating function, and the air filter mechanism 10p is a waterproof air filter.
The cabinet door is provided with an observation window.
The partition plates are provided with ventilation through holes, so that the air in the heat dissipation chamber 10o can flow conveniently at the middle upper part of the cabinet body 10 a.
The temperature and humidity detectors 10t are respectively arranged on two side walls of the cabinet body 10a, the temperature and humidity detectors 10t are arranged on the upper portion, the middle portion and the lower portion of the two side walls of the cabinet body 10a, and each temperature and humidity detector 10t is connected with the central processing unit 5; a plurality of moisture adsorption strips 10u are arranged on the inner wall of the cabinet body 10a, and the cabinet body 10a is wrapped with a heat preservation and insulation material; the rear wall of the cabinet body 10a is provided with mounting substrates 10b through insulating supports, the back of each mounting substrate 10b is provided with a heat dissipation plate 10c matched with the mounting substrate, and heat dissipation fins 10d are longitudinally and uniformly distributed on the heat dissipation plate 10 c.
The working principle and the working process of the invention are as follows:
in the working process, the collector 1, the voltage detector 9g, the compensating current detection unit 10e, the harmonic current detection unit 10f, the temperature and humidity detector 10t and the reactive voltage detector 11b send detected signals to the filtering unit 2 to filter out specific wave band frequencies in the signals, inhibit and prevent interference, the filtering unit 2 transmits the processed signals to the signal conversion unit 3, the signal conversion unit 3 carries out data conversion processing, the signal conversion unit 3 transmits the converted data to the signal monitoring unit 4, the signal monitoring unit 4 feeds the detected signal values back to the central processing unit 5, the central processing unit 5 analyzes the received data according to a preset speed value to judge whether the monitored signal values accord with the preset value, and if the monitored signal values accord with the preset value, the circuit switch 9, the dynamic harmonic correction device 10, the harmonic correction device 9, The reactive power compensation device 11 is not started; if the signal does not accord with the preset value, the signal monitoring unit 4 directly transmits the signal to the signal stabilizing unit 7, the signal stabilizing unit 7 transmits the signal to the signal output unit 8, the signal output unit 8 transmits the record to the human-machine interaction device 15, and transmits the record to the background management center 12 through the communication unit 13 for standby, and meanwhile, the central processing unit 5 sends a working instruction to the circuit change-over switch 9, the dynamic harmonic correction device 10 or the reactive power compensation device 11 through the signal output unit 8 according to the type of the detected signal.
When the central processing unit 5 analyzes the received data according to a preset speed value, analyzes that a signal value is not in accordance with requirements, and when the signal value is missing, the signal monitoring unit 4 transmits the non-in-accordance signal to the signal correcting unit 6, an equalization coefficient storage circuit in the signal correcting unit 6 corrects and stores the received data, interference signals generated in the non-in-accordance signal are further eliminated, and the signals are output to the signal monitoring unit 4, the central processing unit 5 analyzes the received data again according to the preset speed value, analyzes whether the signal value is in accordance with the requirements or not, transmits the signals to the signal stabilizing unit 7 by the signal monitoring unit 4 if the signal value is in accordance with the requirements, and transmits the non-in-accordance signal to the signal correcting unit 6 again for interference signal elimination; in the process, the signal stabilizing unit 7 performs compensation and stabilization adjustment on the received signal, so that the signal keeps the optimal transmission quality, and the situation that the signal is low or fluctuates to generate interference signals again to normally transmit and cause data errors is prevented.
When the signal monitoring unit 4 detects that the electric energy quality is abnormal or the collector 1 has no signal transmission, the alarm unit 11 gives an alarm, the central processing unit 5 receives alarm information and then quickly transmits the alarm information to the signal stabilizing unit 7, the signal stabilizing unit 7 transmits the alarm information to the human-computer interaction device 15 and the communication unit 13 through the signal output unit 8, the human-computer interaction device 15 sends out alarm sound, and the communication unit 10 transmits the alarm information to the background data management platform 12.
In the use process of reactive power compensation, the reactive voltage detector 11b can detect voltage and current of the circuit and send monitoring information to the central processing unit 5 for analysis, when the central processing unit 5 analyzes and finds that the voltage of the circuit is too high or too low, signals are sent to the reactive power compensation device 11 in time, the reactive power compensation device 11 judges and opens the reactive power compensator 11a to output voltage according to the received signals, the circuit selector switch 9 switches and selects the circuit needing compensation, and voltage allocation and compensation of the circuit are achieved.
When the circuit switch 9 operates independently, the switching voltage detector 9g of each of the upper switching mechanism 9a and the lower switching mechanism 9b is connected to a required circuit, so that one circuit is correspondingly connected with one upper switching mechanism 9a and one lower switching mechanism 9b, and the upper switching mechanism 9a and the lower switching mechanism 9b are kept in a disconnected state; in the working process, when a certain circuit has a fault, the central processing unit 5 controls the upper switching mechanism 9a to be automatically switched off when being detected by the switching voltage detector 9g connected with the circuit, and meanwhile, the central processing unit 5 selects to start one or more of the non-fault circuits to supply power to the fault circuit according to the voltage and current conditions fed back by the switching voltage detectors 9g connected with other circuits, so that the continuous power supply of a fault circuit user is ensured; in a specific mode, an upper switching mechanism 9a in a fault circuit controls an active contact 9d to be disconnected with a passive contact 9e through a switching drive 9c, a lower switching mechanism 9b controls the active contact 9d to be connected with the passive contact 9e in a closed mode through the switching drive 9c, one or more upper switching mechanisms 9a in a fault-free circuit controls the active contact 9d to be connected with the passive contact 9e in a closed mode through the switching drive 9c, a reactive power compensation device 11a operates to perform reactive power compensation operation on voltage in a power transmission cable and transmit compensation current to a lower relay rod 9i, and the current collected in the lower relay rod 9i is subjected to voltage stabilization regulation by a voltage regulator 9j, then is transmitted to the upper relay rod 9h, and finally is transmitted to the low-voltage power transmission cable through an upper switching mechanism 9a in the fault power transmission cable connected with the upper relay rod 9h, so that stable power transmission of the low-voltage power transmission cable is ensured.
When the dynamic harmonic correction device is used, the compensation current detection unit 7, the harmonic current detection unit 10f and the line voltage detection unit 10g detect the voltage and harmonic conditions of the power transmission cable in real time and feed detection signals back to the central processing unit 5, the central processing unit 5 performs calculation analysis on the received detection signals, when the harmonic waves in the power transmission cable are found to be higher than the power transmission control requirement, the central processing unit 5 sends signals to the trigger protection unit 10h, the trigger protection unit 10h triggers the primary compensation filtering unit 10 to work, so that each harmonic wave in the power transmission cable is filtered, the fundamental wave reactive power is dynamically compensated, and the harmonic current in the power transmission cable meets the national power transmission standard; when the current filtered by the first-stage compensation filtering unit 10 is still detected by the harmonic current detection unit 10f and the line voltage detection unit 10g to contain harmonic waves or unstable voltages, the central processing unit 5 sends a signal to the trigger protection unit 10h, the trigger protection unit 10h triggers the second-stage compensation filtering unit 10j to work, each harmonic wave in the power transmission cable is filtered again, fundamental wave reactive power is dynamically compensated, stable and balanced voltage in the power transmission cable is guaranteed, and reliability of filtering work is improved;
in the working process, when the temperature is high in the daytime or the temperature inside the cabinet body 10a is higher due to the operation of the power distribution device, the temperature and humidity detector 10t transmits a detected high-temperature signal to the central processing unit 5, the central processing unit 5 starts the ventilation fan 10q to operate, external natural air is extracted to enter the cabinet body 10a, and meanwhile high-temperature gas in the cabinet body 10a is exhausted, so that the temperature inside the cabinet body 10a is not higher than the normal working temperature of the power distribution device, and the ventilation fan 10q is stopped after the temperature inside the cabinet body 10a reaches the working temperature; when the temperature in the day or at night is low, so that the temperature in the cabinet body 10a is low, the temperature monitor transmits a detected low-temperature signal to the central processing unit 5, the central processing unit 5 starts the ventilation fan 10q and the electric heater to synchronously operate, external natural air is extracted to heat and then enters the cabinet body 10a, and meanwhile, low-temperature gas in the cabinet body 10a is discharged, so that the temperature in the cabinet body 10a is not lower than the normal working temperature of the power distribution device, the ventilation fan 10q and the electric heater are stopped to save energy after the temperature in the cabinet body 10a reaches the working temperature, the situation that the temperature in the cabinet body 10a is overhigh is avoided, and the normal work of the power distribution device is ensured; when the temperature and humidity detector 10t detects that water vapor exists, the temperature and humidity detector 10t transmits the detected low-temperature signal to the central processing unit 5, the central processing unit 5 starts the ventilation fan 10q and the electric heater to run synchronously, external natural air is extracted and heated, then the external natural air enters the cabinet body 10a, the water vapor in the cabinet body 10a is heated and then discharged, and natural air can be selected not to be heated.
Claims (7)
1. The utility model provides an electric energy transmission generating line system suitable for high-altitude area, includes collector (1), signal processor (2), filtering unit (2), signal conversion unit (3), signal monitoring unit (4), central processing unit (5), signal correction unit (6), signal stabilization unit (7) and signal output unit (8), circuit transfer switch (9), dynamic harmonic orthotic devices (10), reactive power compensation device (11), its characterized in that: the collector (1) is sequentially connected with a filtering unit (2), a signal conversion unit (3), a signal monitoring unit (4), a central processing unit (5), a signal correction unit (6), a signal stabilization unit (7) and a signal output unit (8), the filtering unit (2) is sequentially connected with the signal conversion unit (3) and the signal monitoring unit (4), the signal monitoring unit (4) is respectively connected with the central processing unit (5), the signal correction unit (6) and the signal stabilization unit (7), the central processing unit (5) is connected with the signal stabilization unit (7), the signal stabilization unit (7) is connected with the signal output unit (8), the signal output unit (8) is respectively connected with a circuit switch (9), a dynamic harmonic correction device (10), a reactive power compensation device (11) and a background management center (12), the circuit switch (9), the dynamic harmonic correction device (10) and the reactive power compensation device (11) are all connected with a power transmission cable; the circuit change-over switch (9) comprises a current collecting mechanism arranged on the mounting frame, at least two upper switching devices (9a) and at least two lower switching devices (9b), wherein the upper switching devices (9a) are arranged at the upper end of the current collecting mechanism, and the lower switching devices (9b) are arranged at the lower end of the current collecting mechanism; wherein the upper switching device (9a) and the lower switching device (9b) respectively comprise a switching drive (9c), an active contact (9d), a passive contact (9e), a relay connector (9f) and a voltage detector (9g), the passive contacts (9e) are symmetrically arranged on the mounting frames at two sides of the current collecting mechanism through the fixing frame, switching drives (9c) are respectively arranged on the mounting rack corresponding to the passive contacts (9e), each switching drive (9c) is provided with an active contact (9d) which is in movable fit with the passive contact (9e), a voltage detector (9g) is provided on the mounting board (10b) on either side of each switching drive (9c), one end of the voltage detector (9g) is connected with the active contact (9d) through a relay connecting piece (9f), and the other end of the voltage detector is connected with the power transmission cable and the central processor unit (5) through respective conducting wires.
2. The electric power transmission bus system suitable for high altitude areas as set forth in claim 1, wherein: the current collection mechanism comprises an upper relay rod (9h), a lower relay rod (9i), a voltage regulator (9j) and a fuse (9k), the upper relay rod (9h) is arranged on an upper switching device (9a) and is connected with a passive contact (9e) in each upper switching device (9a) in series, the lower relay rod (9i) is arranged on a lower switching device (9b) and is connected with a passive contact (9e) in each lower switching device (9b) in series, the upper relay rod (9h) sequentially comprises the voltage regulator (9j), the fuse (9k) and the lower relay rod (9i) through leads, and the voltage regulator (9j) and the fuse (9k) are arranged on a mounting substrate (10 b); the switching drive (9c) is a hydraulic power unit or an air cylinder, the active contact (9d) and the moving contact are in plug-in fit in a concave-convex structure, and an insulating mounting seat is arranged between the switching drive (9c) and the active contact (9 d); relay connection spare (9f) one end connect fuse (9k), the other end is connected initiative contact (9d) of switching device (9b) down, just relay connection spare (9f) are for having elastic heliciform cable.
3. The electric power transmission bus system suitable for high altitude areas as set forth in claim 1, wherein: the dynamic harmonic correction device (10) comprises a cabinet body (10a) and a mounting substrate (10b), wherein a cabinet door capable of opening and closing the cabinet body (10a) is arranged on the cabinet body (10a), wire holes are formed in the upper portion and/or the lower portion of the cabinet wall of the cabinet body (10a), the mounting substrate (10b) is arranged on the rear wall of the cabinet body (10a) through an insulating support, heat dissipation plates (10c) matched with the mounting substrate (10b) are arranged on the back face of the mounting substrate (10b), heat dissipation fins (10d) are arranged on the heat dissipation plates (10c), electric fixing holes are formed in the front face of the mounting substrate (10b), a harmonic elimination device is arranged on the upper portion of the front face of the mounting substrate (10b), and the harmonic elimination device is connected with a central processing unit (5); wherein, the harmonic elimination device comprises a compensation current detection unit (10e), a harmonic current detection unit (10f), a line voltage detection unit (10g), a trigger protection unit (10h), a primary compensation filter unit (10i) and a secondary compensation filter unit (10j), one end of the compensation current detection unit (10e) is connected with a power transmission cable, the other end is sequentially connected with the harmonic current detection unit (10f) and the line voltage detection unit (10g), the line voltage detection unit (10g) is connected with a central processing unit (5), one end of the primary compensation filter unit (10i) is connected with the power transmission cable, the other end is connected with the trigger protection unit (10h), the secondary compensation filter unit (10j) is arranged on the power transmission cable at the rear end of the primary compensation filter unit (10i), and the secondary compensation filter unit (10j) is connected with the trigger protection unit (10h), the trigger protection unit (10h) is connected with the central processing unit (5).
4. The electric power transmission bus system suitable for high altitude areas as set forth in claim 3, wherein: the primary compensation filtering unit (10i) and the secondary compensation filtering unit (10j) respectively comprise a filtering capacitor bank (10k) and a filtering reactor bank (10m), one end of the filtering reactor bank (10m) is connected with a power transmission cable, the other end of the filtering reactor bank is connected with the filtering capacitor bank (10k), and the filtering capacitor bank (10k) is connected with the trigger protection unit (10 h); and the filter capacitor bank (10k) at least comprises two filter capacitors, the filter reactor bank (10m) at least comprises two filter reactors, and an electromagnetic contactor is arranged between the filter reactor bank (10m) and the power transmission cable.
5. The electric power transmission bus system suitable for high altitude areas as set forth in claim 1, wherein: the reactive power compensation device (11) comprises a cabinet body (10a), a mounting substrate (10b), a reactive power compensator (11a) and a reactive voltage detector (11b), wherein the reactive power compensator (11a) and the reactive voltage detector (11b) are arranged on the mounting substrate (10b), a cabinet door capable of opening and closing the cabinet body (10a) is arranged on the cabinet body (10a), wire holes are formed in the upper portion and/or the lower portion of the cabinet wall of the cabinet body (10a), a circuit switch (9) connected with a power transmission line is arranged on the front upper portion of the mounting substrate (10b), the reactive power compensator (11a) is arranged on the front middle lower portion of the mounting substrate (10b), the circuit switch (9) is connected with the reactive power compensator (11a) and the central processor unit (5), and the reactive power compensator (11a) is connected with the power transmission cable through the reactive.
6. The electric power transmission bus bar system suitable for high altitude areas according to claim 3 or 5, wherein: the lower part of the cabinet body (10a) is provided with a heat dissipation chamber (10o) through a partition plate, the heat dissipation chamber (10o) is communicated with the middle upper part of the cabinet body (10a), air inlet windows are respectively arranged at two ends of the heat dissipation chamber (10o), an air filtering mechanism (10p) is arranged on the air inlet windows, a ventilation fan (10q) is arranged in the middle of the heat dissipation chamber (10o), the ventilation fan (10q) is connected with each air filtering mechanism (10p), the ventilation fan (10q) is also connected with a central processing unit (5), a protective net is arranged on ventilation windows on the upper parts of two side walls of the cabinet body (10a), set up in advance at the inboard of ventilation window and match regulating plate (10r), regulating plate (10r) are connected and are adjusted drive (10s), adjust drive (10s) control regulating plate (10r) and adjust the ventilation window and open and shut, it still connects central processing unit (5) to adjust drive (10 s).
7. The electric power transmission bus bar system suitable for high altitude areas according to claim 3 or 5, wherein: the temperature and humidity detectors (10t) are respectively arranged on two side walls of the cabinet body (10a), the temperature and humidity detectors (10t) are arranged on the upper portion, the middle portion and the lower portion of the two side walls of the cabinet body (10a), and each temperature and humidity detector (10t) is connected with the central processing unit (5); a plurality of moisture adsorption strips (10u) are arranged on the inner wall of the cabinet body (10a), and the cabinet body (10a) is wrapped with a heat-preservation and heat-insulation material; the rear wall of the cabinet body (10a) is provided with mounting substrates (10b) through insulating supports, the back of each mounting substrate (10b) is provided with a heat dissipation plate (10c) matched with the mounting substrate, and heat dissipation fins (10d) are longitudinally and uniformly distributed on the heat dissipation plate (10 c).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910286337.6A CN110165776B (en) | 2019-04-10 | 2019-04-10 | Electric energy transmission bus system suitable for high-altitude area |
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| CN201910286337.6A CN110165776B (en) | 2019-04-10 | 2019-04-10 | Electric energy transmission bus system suitable for high-altitude area |
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| CN110165776B true CN110165776B (en) | 2021-04-23 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8063515B2 (en) * | 2008-10-10 | 2011-11-22 | General Electric Company | Compensation system for power transmission |
| CN101938130B (en) * | 2010-09-15 | 2012-10-03 | 哈尔滨工业大学 | High voltage filter and dynamic reactive power compensation control system combining PPF with TSC and control method thereof |
| CN202167856U (en) * | 2011-07-27 | 2012-03-14 | 上海雷诺尔电力自动化有限公司 | Automatic high-voltage dynamic reactive compensation cabinet |
| CN203617716U (en) * | 2013-09-05 | 2014-05-28 | 林川 | Electric power system novel dynamic reactive compensation and harmonic wave treatment apparatus |
| CN205377298U (en) * | 2015-12-31 | 2016-07-06 | 哈尔滨同为电气股份有限公司 | High height above sea level suppresses humorous wave mode low pressure dynamic reactive power compensation device based on TSC |
| CN207459511U (en) * | 2017-11-29 | 2018-06-05 | 管旭 | A kind of high voltage power distributing cabinet |
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