CN102723728A - Variable-speed variable-frequency energy-saving power generation and distribution device - Google Patents
Variable-speed variable-frequency energy-saving power generation and distribution device Download PDFInfo
- Publication number
- CN102723728A CN102723728A CN2012101648991A CN201210164899A CN102723728A CN 102723728 A CN102723728 A CN 102723728A CN 2012101648991 A CN2012101648991 A CN 2012101648991A CN 201210164899 A CN201210164899 A CN 201210164899A CN 102723728 A CN102723728 A CN 102723728A
- Authority
- CN
- China
- Prior art keywords
- connects
- energy
- converter
- speed
- variable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
The invention discloses a variable-speed variable-frequency energy-saving power generation and distribution device. An integrated manager is respectively connected with a signal detection acquirer and a variable-speed constant-voltage diesel generator set; the variable-speed constant-voltage diesel generator set is connected with a rectification circuit; the rectification circuit is connected with a common direct current device; and the common direct current device is respectively connected with the signal detection acquirer, an energy accumulating unit and a reversible direct current alternating current frequency converter. The variable-speed variable-frequency energy-saving power generation and distribution device has the advantages that 1) a crane motor variable-speed variable-frequency constant-voltage power supply function, energy recovery and utilization functions, power generation and distribution system monitoring and energy management functions, system protection and alarm functions and the like are realized; 2) the device is low in fuel consumption rate, 40 to 70 percent of consumed fuel of the conventional power generation and distribution system of a radioisotope thermo-electric generator (RTG) is reduced, and an energy-saving effect is obvious; 3) the device is high in constant voltage performance; 4) the device is high in energy recovery and utilization rate; 5) the device is high in impact load capacity; 6) the device is high in maneuverability; and 7) a generator set and an energy accumulating device simultaneously supply power, and set installed capacity which accords with the system power of the RTG is low.
Description
Technical field
The present invention relates to the energy-saving electric installation of being transported to of a kind of speed changing, frequency converting.
Background technology
Change stacking, handling operation production places such as container hargour in modern times; Specialized rubbertyred container gantry crane (being called for short RTG); High with its flexibility height, mobility strong, operating efficiency, be fit to advantage such as big storage yard operation and become main force's hanging device in container specialized wharf stockyard, obtained using very widely.
Because container handling operation needs landing continually, startup and braking; The load variations amplitude is bigger usually; The generating set capacity of tradition RTG equipment need be twice than the static power of complete machine, and energy can not make full use of, and its phenomenon of " drinking oil suddenly " has not only increased oil consumption and operation cost; Also cause serious environmental to pollute (over-emitting black exhaust), transformation task is heavy.
How reducing energy consumption and the operating cost of RTG, reduce emissions of diesel engines, give full play to the advantage of RTG as flow device, is domestic and international each port enterprise, the common problem of paying close attention to and studying of harbour facilities R&D institution.
RTG equipment is transported to electric transformation and is generally adopted " oil changes " technology, technological, the generator speed regulating control technology of super capacitor energy-storage now; But respectively there is corresponding problem at power consumption, discharging and aspects such as pollution, efficient; As: the RTG that oil changes power technology exists flexibility and poor, the ineffective shortcoming of mobility; There is the inconstant shortcoming of output voltage in generator speed regulating control technology, and the reducing energy consumption demand is still very big.Do not have good reducing energy consumption scheme for a long time, directly had influence on the healthy sustainable development of China and even global container harbour.
Summary of the invention
The object of the present invention is to provide the energy-saving electric installation of being transported to of a kind of speed changing, frequency converting, core technologies such as synthetical application management, speed constant pressure generating, super capacitor energy-storage, reversible orthogonal frequency conversion solve the shortcoming that the diesel generating set power consumption is big, operating cost is high, environmental pollution is big of traditional RTG equipment; Overcome existing flexibility and poor, the ineffective shortcoming of mobility that adopts oil to change power technology RTG both at home and abroad; And the inconstant shortcoming of generating set output voltage of generator variable speed energy saving technology; Make RTG be transported to the electric system fuel consume, become RTG equipment and be transported to the improved technology of electric system jumping characteristic than traditional generation mode decline 40-70%.
The present invention realizes like this; It comprises integrated management device, speed constant pressure diesel generating set, rectification circuit, public direct-current device, reversible orthogonal frequency converter, energy-storage units, input collector; It is characterized in that the integrated management device connects input collector and speed constant pressure diesel generating set respectively; The speed constant pressure diesel generating set connects rectification circuit; Rectification circuit connects the public direct-current device, and the public direct-current device connects input collector, energy-storage units and reversible orthogonal frequency converter respectively.
Said integrated management device comprises A/D, PLC unit, PID and D/A, and said A/D, PLC unit, PID are connected with D/A successively; Said speed constant pressure diesel generating set comprises Diesel engine, frequency-changing pressure stabilizing generator, automatic voltage regulator, electron speed regulator and controller; Said controller connects Diesel engine; Diesel engine connects electron speed regulator and frequency-changing pressure stabilizing generator respectively, and the frequency-changing pressure stabilizing generator connects automatic voltage regulator; Said public direct-current device comprises common DC bus and direct current splitter group, and said common DC bus connects direct current splitter group; Said reversible orthogonal frequency converter comprises DC/AC inverter, AC converter I, AC converter II, AC-dc converter and DC/AC inverter group; Said DC/AC inverter connects the AC converter I; AC-dc converter connects the AC converter II, and said DC/AC inverter group is encapsulated in separately in the reversible orthogonal frequency converter; D/A connects electron speed regulator and automatic voltage regulator respectively simultaneously; The frequency-changing pressure stabilizing generator connects rectification circuit; Rectification circuit connects common DC bus; Common DC bus is connected the input collector respectively with direct current splitter group, and direct current splitter group also connects energy-storage units, DC/AC inverter group, AC-dc converter and DC/AC inverter respectively, and the input collector connects A/D.
The whole generation of adopting speed constant pressure generating, the conversion of friendship orthogonal, frequency conversion to realize required electric energy in the crane motor course of work of native system; The electric energy that crane motor decline produces is through frequency conversion, the straight conversion access of friendship public direct-current system, and public direct-current has also inserted energy-storage system simultaneously.Total management system is managed respectively each progress of work, and detects to the generating of whole system with electric process, through the comprehensive power management algorithm, reasonably controls discharging and recharging of diesel generating set start and stop, energy-storage system, thereby realizes energy-conservation.
Through the integrated management device, detection system load condition, and control system running status on this basis:
is when detecting the hoisting equipment rising; Export electric energy through system's control generating set and super capacitor to load; For making the generating set power output maximum; System controls its rotating speed simultaneously and rises to rated speed, and control generating set and capacitor supply the load use according to preset proportion output electric energy.
Technique effect of the present invention is: 1, realize the power supply of speed changing, frequency converting constant voltage, energy recovery and utilization, be transported to electric system monitoring and functions such as energy conservation, system protection and warning; 2, fuel consumption is low, is transported to relatively fuel consume decline 40%～70% of electric system with the tradition of RTG; 3, the constant voltage performance is good; 4, the energy recovery utilance is high; 5, band impact load ability is strong; 6, mobility strong; 7, generating set and energy storage device are supplied power simultaneously, and the unit installed capacity of satisfying the RTG system power is little.
Description of drawings
Fig. 1 is a principle schematic of the present invention.
Fig. 2 is a principle schematic 2 of the present invention.
Embodiment
As shown in Figure 1; The present invention realizes like this; It comprises integrated management device 1, speed constant pressure diesel generating set 2, rectification circuit 3, public direct-current device 4, reversible orthogonal frequency converter 5, energy-storage units 6, input collector 7; Integrated management device 1 connects input collector 7 and speed constant pressure diesel generating set 2 respectively; Speed constant pressure diesel generating set 2 connects rectification circuit 3, and rectification circuit 3 connects public direct-current device 4, and public direct-current device 4 connects input collector 7, energy-storage units 6 and reversible orthogonal frequency converter 5 respectively.
As shown in Figure 2, said integrated management device 1 comprises A/D1-1, PLC unit 1-2, PID1-3 and D/A1-4, and said A/D1-1, PLC unit 1-2, PID1-3 are connected with D/A1-4 successively; Said speed constant pressure diesel generating set 2 comprises Diesel engine 2-1, frequency-changing pressure stabilizing generator 2-2, automatic voltage regulator 2-3, electron speed regulator 2-4 and controller 2-5; Said controller 2-5 connects Diesel engine 2-1; Diesel engine 2-1 connects electron speed regulator 2-4 and frequency-changing pressure stabilizing generator 2-2 respectively, and frequency-changing pressure stabilizing generator 2-2 connects automatic voltage regulator 2-3; Said public direct-current device 4 comprises common DC bus 4-1 and direct current splitter group 4-2, and said common DC bus 4-1 connects direct current splitter group 4-2; Said reversible orthogonal frequency converter 5 comprises DC/AC inverter 5-1, AC converter I 5-2, AC converter II 5-3, AC-dc converter 5-4 and DC/AC inverter group 5-5; Said DC/AC inverter 5-1 connects AC converter I 5-2; AC-dc converter 5-3 connects AC converter II 5-4, and said DC/AC inverter group 5-5 is encapsulated in separately in the reversible orthogonal frequency converter; D/A connects electron speed regulator and automatic voltage regulator respectively simultaneously; The frequency-changing pressure stabilizing generator connects rectification circuit; Rectification circuit connects common DC bus; Common DC bus is connected the input collector respectively with direct current splitter group, and direct current splitter group also connects energy-storage units, DC/AC inverter group, AC-dc converter and DC/AC inverter respectively, and the input collector connects A/D.
The electricity condition of using of public direct-current device, reversible orthogonal frequency converter, energy-storage units gathered the input collector by the integrated management device; Through the A/D analog-to-digital conversion parameter is imported the PLC unit and carry out the comprehensive power Management Calculation; Through the PID ERROR CONTROL, the result is imported D/A carry out the form output of digital-to-analogue conversion with D/A or dry contact, the speed constant pressure diesel generating set is carried out Comprehensive Control; Realization reaches energy-conservation purpose to whole management of being transported to electric system.
The integrated management device provides conditioning signal according to the algorithm of setting to electron speed regulator and automatic voltage regulator; Regulate the rotating speed of Diesel engine and the voltage of adjustment frequency-changing pressure stabilizing generator respectively, reach the purpose of speed constant pressure diesel generating set speed constant pressure output.Startup, the shutdown of controller control Diesel engine reach the protection of hypervelocity, low oil pressure, high water temperature etc.The frequency-changing pressure stabilizing generator rotation speed change causes output voltage to change because speed governing makes under the constant condition of excitation field, keep constant voltage output for making it, and exciting current that must regulator generator is controlled voltage constant.Because generator improves in the temperature rise of slow-speed of revolution lower rotor part, so must improve the rotor capacity to avoid exciting current excessive.Utilize that Diesel engine unloadedly, low carries, the characteristic of fuel consumption when fuel consumption is less than high rotating speed during the slow-speed of revolution, make unit when zero load and underloading, keep slow-speed of revolution operation, the energy resource consumption of reduction generating set.
Rectification circuit is made up of three-phase bridge rectification circuit; Three-phase alternating current is transformed into direct current; The public direct-current system mainly is made up of common DC bus and direct current splitter group; Realize to the energy-storage units charging, each required circuit acquired signal being provided through this part to the input collector to DC/AC inverter, AC-dc converter, the power supply of DC/AC inverter group.
When hoisting equipment descends; Crane motor transfers the operation of generator state under the potential load effect of weight; The regenerative electric energy that sends is that direct current is delivered to the public direct-current device through the inversion of reversible orthogonal frequency converter, is stored in the super capacitor of energy-storage units, reclaims electric energy; Use as load power source, can realize energy-conservation.
The energy-storage units core devices is a ultracapacitor; Ultracapacitor is stored energy in isolated electric charge, and big more, the isolated electric charge of area that is used for stored charge is intensive more, and its capacitance is big more; Its energy density can reach 5～10 times of battery; Time constant 1～2s, and in its range of nominal tension, can be recharged to any setting current potential, and can discharge fully.The integrated management device is managed the progress of work of super capacitor according to the computational analysis that discharges and recharges signal that the input acquisition system is collected, and controls electric voltage equalization, temperature alarming, electric voltage over press warning etc.
Claims (2)
1. energy-saving electric installation of being transported to of speed changing, frequency converting; It comprises integrated management device, speed constant pressure diesel generating set, rectification circuit, public direct-current device, reversible orthogonal frequency converter, energy-storage units, input collector; It is characterized in that the integrated management device connects input collector and speed constant pressure diesel generating set respectively; The speed constant pressure diesel generating set connects rectification circuit; Rectification circuit connects the public direct-current device, and the public direct-current device connects input collector, energy-storage units and reversible orthogonal frequency converter respectively.
2. the energy-saving electric installation of being transported to of a kind of speed changing, frequency converting according to claim 1 is characterized in that said integrated management device comprises A/D, PLC unit, PID and D/A, and said A/D, PLC unit, PID are connected with D/A successively; Said speed constant pressure diesel generating set comprises Diesel engine, frequency-changing pressure stabilizing generator, automatic voltage regulator, electron speed regulator and controller; Said controller connects Diesel engine; Diesel engine connects electron speed regulator and frequency-changing pressure stabilizing generator respectively, and the frequency-changing pressure stabilizing generator connects automatic voltage regulator; Said public direct-current device comprises common DC bus and direct current splitter group, and said common DC bus connects direct current splitter group; Said reversible orthogonal frequency converter comprises DC/AC inverter, AC converter I, AC converter II, AC-dc converter and DC/AC inverter group; Said DC/AC inverter connects the AC converter I; AC-dc converter connects the AC converter II, and said DC/AC inverter group is encapsulated in separately in the reversible orthogonal frequency converter; D/A connects electron speed regulator and automatic voltage regulator respectively simultaneously; The frequency-changing pressure stabilizing generator connects rectification circuit; Rectification circuit connects common DC bus; Common DC bus is connected the input collector respectively with direct current splitter group, and direct current splitter group also connects energy-storage units, DC/AC inverter group, AC-dc converter and DC/AC inverter respectively, and the input collector connects A/D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101648991A CN102723728A (en) | 2012-05-25 | 2012-05-25 | Variable-speed variable-frequency energy-saving power generation and distribution device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101648991A CN102723728A (en) | 2012-05-25 | 2012-05-25 | Variable-speed variable-frequency energy-saving power generation and distribution device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102723728A true CN102723728A (en) | 2012-10-10 |
Family
ID=46949427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101648991A Pending CN102723728A (en) | 2012-05-25 | 2012-05-25 | Variable-speed variable-frequency energy-saving power generation and distribution device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102723728A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280884A (en) * | 2013-05-22 | 2013-09-04 | 华为技术有限公司 | Power supply system and method of diesel generator and base station |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1895987A (en) * | 2006-06-29 | 2007-01-17 | 王钢 | Resolution for damaging railings by heavy bridge or gate crane |
| CN201021146Y (en) * | 2007-03-30 | 2008-02-13 | 中国南车集团成都机车车辆厂 | Track hybrid power locomotives |
| CN101348215A (en) * | 2008-09-22 | 2009-01-21 | 北京运达伟业科贸有限责任公司 | Velocity modulation fuel saving diesel-electric set electric supply tyre type gantry container crane |
| CN201882797U (en) * | 2010-11-30 | 2011-06-29 | 大连华锐股份有限公司 | Frequency conversion and speed regulation fault redundancy protection system for foundry crane |
| CN202940597U (en) * | 2012-05-25 | 2013-05-15 | 泰豪电源技术有限公司 | Variable-speed variable-frequency energy-saving power generation and distribution device |
-
2012
- 2012-05-25 CN CN2012101648991A patent/CN102723728A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1895987A (en) * | 2006-06-29 | 2007-01-17 | 王钢 | Resolution for damaging railings by heavy bridge or gate crane |
| CN201021146Y (en) * | 2007-03-30 | 2008-02-13 | 中国南车集团成都机车车辆厂 | Track hybrid power locomotives |
| CN101348215A (en) * | 2008-09-22 | 2009-01-21 | 北京运达伟业科贸有限责任公司 | Velocity modulation fuel saving diesel-electric set electric supply tyre type gantry container crane |
| CN201882797U (en) * | 2010-11-30 | 2011-06-29 | 大连华锐股份有限公司 | Frequency conversion and speed regulation fault redundancy protection system for foundry crane |
| CN202940597U (en) * | 2012-05-25 | 2013-05-15 | 泰豪电源技术有限公司 | Variable-speed variable-frequency energy-saving power generation and distribution device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280884A (en) * | 2013-05-22 | 2013-09-04 | 华为技术有限公司 | Power supply system and method of diesel generator and base station |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204928358U (en) | Diesel generator economizer system of intermittent type nature operation continuation power supply | |
| CN101348215B (en) | Velocity modulation fuel saving diesel-electric set electric supply tyre type gantry container crane | |
| CN104728219A (en) | Hydraulic pump testbed system with energy recovery function and energy recovery method | |
| CN203027153U (en) | Universal smart power grid power electronic device | |
| CN104467583B (en) | Permanent DC bus-bar voltage permanent magnet generator unit based on prime mover speed governing | |
| CN201961911U (en) | Intelligent electricity-saving device for elevator | |
| CN103311918A (en) | Variable frequency oil engine-based direct current (DC) power generation system | |
| CN202940597U (en) | Variable-speed variable-frequency energy-saving power generation and distribution device | |
| CN204917716U (en) | Hybrid hoist economizer system | |
| CN202309602U (en) | Diesel generator energy-saving system | |
| CN205472296U (en) | Harbor hoisting machinery energy-saving system using diesel generator set as power source | |
| CN202004500U (en) | Auxiliary power supply for crane | |
| CN104300565A (en) | Pitch system and power supply method of pitch system | |
| CN201726136U (en) | Central control system for adjusting generator set and energy storage element output | |
| CN208691003U (en) | Harbour bridge mixed type power supply system | |
| CN203707864U (en) | Novel hybrid-energy 48V direct-current frequency-conversion power generation system | |
| CN201238202Y (en) | Independent power station with charging/discharging, storage and distribution, power supply and consumption function for non-parallel wind-solar power supply | |
| US20160159619A1 (en) | Rubber-tyred gantry crane (RTG) dual power saving system | |
| CN102723728A (en) | Variable-speed variable-frequency energy-saving power generation and distribution device | |
| CN204578105U (en) | A kind of energy feedback system based on port crane | |
| CN201619963U (en) | Speed-changing and oil-saving diesel-driven generator set power-supplying tire type gantry container crane | |
| CN203313115U (en) | High power vector inversion control device | |
| CN203667772U (en) | Energy storage type elevator | |
| CN205397774U (en) | Energy saving system for elevator | |
| CN207687030U (en) | A kind of use for diesel engine emergency blower device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121010 |