CN105603944A - DCS control protection system of biomass power generation device added in hydropower station - Google Patents
DCS control protection system of biomass power generation device added in hydropower station Download PDFInfo
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- E—FIXED CONSTRUCTIONS
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention relates to a DCS control protection system of a biomass power generation device added in a hydropower station. The DCS control protection system comprises an original hydropower station control protection system and a newly-added biomass power generation control protection device consistent with a network bus and communication protocol, and the biomass power generation control protection device comprises biomass power generation unit LCUs, a biomass common LCU and biomass power generator protection monitoring and controlling screens. By the DCS control protection system, centralized control of the hydropower station and the biomass power generation device can be realized, investment on the DCS control protection system of the biomass power generation device can be saved by 60-85%, running maintenance personnel can be reduced, production cost can be lowered, and labor productivity can be improved.
Description
Technical field
The present invention relates to the control resist technology field of TRT, relating in particular to a kind of power station increases biomass power generationThe DCS of device controls protection system.
Background technology
Living beings (Biomass) comprise the plant such as crops, trees and residual body thereof, feces of livestock and poultry, organic waste etc., logicalCross industrial processes and transform, can production bio-based product (Biobasedproducts), bio-fuel (Biofuels) and biological energy sourceSource (Bioenergy). On the earth, approximately 2,200 hundred million tons of dry biomass of the annual production of photosynthesis, are equivalent to global energy total amount consumed10 times.
According to statistics, China's agricultural crop straw still has 60% to can be used for energy purposes, be roughly equal to 2.1 hundred million t mark coals, has an appointment 40%The undressed utilization of forest exploitation residue, the existing biomass energy for exploitation at least can reach 4.5 hundred million t mark coals, also has simultaneouslyApproximately 1.33 hundred million hectares of suitable agriculture waste mountain wastes suitable for afforestation, can be for development energy agriculture and energy forestry.
Along with the quickening of Urbanization in China, people in the countryside reduce gradually on the one hand, and the electrification of the countryside is with electricity generation in additionThe enforcement of bavin and energetically afforestation, China is southern area especially, and afforestation rate increases substantially, vast mountain area and hillsThe biomass resource amounts such as district's agricultural crop straw, forestry waste branch, corner material, firewood forests are increasing. With Southwest Sichuan portionArea is example, minimizing and the development for bavin with electricity of the people in the countryside of following along with urbanization, rural area idle land, Forestland TransferFor economic forest in blocks (bamboo) in large scale, finished product material is about 1:0.6 with the discarded branch of felling corner material, between having entered at present(adopting) cuts down the phase, and a large amount of branch, corner material are discarded in forest farm, not only increases and fells difficulty and cost next time, also can increase forest landMaintenance cost and forest fire risk. In addition a large amount of firewood forests, because demand reduces, cannot upgrade, and has occurred overdone phenomenon,Though impact environment is unlikely, be a kind of huge waste from the utilization of resources. On the other hand, vast mountain area and hillsDistrict, due to the restriction of the factors such as peasants and herdsmen's culture, technical ability, traffic, is keeping abundant biomass resource, for a long time in povertyState, precisely poverty alleviation has risen to national project.
From the Tenth National People's Congress standing committee of the People's Republic of China (PRC) the 14 time on February 28th, 2005Since " People's Republic of China's Renewable Energy Law " passed through in meeting, China's biomass power generation is subject to country to encourage renewable clean energyThe guiding of source policy, rises gradually. According to " country's reply climate change planning (2014-2020) ", raw to the year two thousand twenty ChinaMaterial capacity of installed generator reaches 3,000 ten thousand kw. By the end of the year 2015, national biomass power generation installed capacity has reached 1300Ten thousand kw, annual electricity generating capacity 78000000000 kwh. At present also mainly taking agricultural crop straw, bagasse, vinasse as raw material, forest exploitation residue,Firewood forests resource waits further exploitation.
Conventional biomass power plant, not only has raw material system, biomass boiler (or biomass gasifying furnace) system, steamerGenerating set (or gas turbine generator group) system, booster stations, transmission line of electricity and control protection system and scheduling communications system, alsoNeed the part or all of unproductive facilities such as supporting life, logistics, office. The comprehensive method of investment, in 10000 yuan/kw left and right, is generallyMore than the twice of conventional coal fired thermal power plant, design annual utilization hours is generally 7000～8000h. Average actual the sending out in the whole nation in 2015Electric hour about 5900h left and right. The general active energy of only sending out of biomass power plant, its excitation system is encouraged requirement without crossing, and does not adjustOperation mutually. Mainly there is four major problem: the one, per kilowatt investment is large, causes its fixed cost high; The 2nd, fuel cost accountingThe logistics cost of height, especially fuel is higher, the raw material moisture content high (40% left and right) of harvesting and storing; The 3rd, raw material supply is unstable;The 4th, biomass boiler burning and the thermal efficiency are lower. How to reduce its per kilowatt investment, reduce fuel cost, especially fuelLogistics cost, ensure the stable supply of raw material, improving biomass boiler efficiency of combustion and the thermal efficiency is that can biomass power generation be good forThe key that health is developed.
In addition China or hydroelectric resources big country. By the end of the year 2015, China's hydropower installed capacity is broken through 300,000,000 Kw, accounts for complete27% of ball. China's hydroelectric resources mainly concentrates on Jinsha jiang River, Yalongjiang River, Dadu River, the Lancang River, the Wujiang River and the Changjiang river, the Yellow RiverSwim other area. The hydroelectric resources amount in Yunnan, Guizhou, Sichuan, Tibet, Chongqing accounts for 2/3 of the whole nation. China is built at present throwsProduce nearly 100,000 of medium waterpower generator station, nearly 3,000 ten thousand Kw of total installation of generating capacity, account for 10% of national water power total installation of generating capacity, installation profitWith the nearly 3000h of hourly average, annual electricity generating capacity approximately 90,000,000,000 Kwh. As clean energy resource, be China's electrification of the countryside and outlying districtSignificant contribution has been made in economic development.
But water power generated energy is mainly controlled by natural water, generation current equipment annual utilization hours is low, and the wet season is (everyYear 6～October, 5 totally months, lower with) generated energy is more concentrated, average output accounts for 40%～100% of installed capacity, limit outputReach 105%, in water power concentration zones, because Regional Precipitation is concentrated, often occur general excess load generating situation, cause system to haveMerits and demerits amount, idle deficiency, the period when a river is at its normal level (annual 5, November, 2 totally months, lower with) average output account for 20% of installed capacity～50%, dry season (annual 1～4 and December, 5 totally months, lower with) average output accounts for 8%～30% of installed capacity. From for many yearsAverage generated energy, wet season generated energy accounts for 60%～80% of annual generated energy, and send out active energy and account for flat, dry season20%～40% of annual generated energy. Rich withered particularly thorny, many power stations even become seasonal power station, and dry season is because comingThe water yield is too small there is the situation of closing the door and stopping production, the power transformating and supplying facility that power station related investment is built flat, dry season utilization rate non-Often low. In general, China power station is due to the few and power transformating and supplying facility profit that related investment is built of the period when a river is at its normal level, dry season generated energyLow by rate, fixed cost amortization is large, generally in meagre profit or lossing state.
Power station is generally located at mountain area and hills area, and periphery biomass resource is very abundant, for utilize local abundant andThe biomass resource that can store, the inventor discloses " power station increases the comprehensive utilization of resources method of biomass generator "(number of patent application 201610071342.1), can be in power station or near increase biomass generator, adjust in the wet seasonOperation mutually, send out active energy flat, dry season, thereby improve delivery and the asset utilization ratio in the power station period when a river is at its normal level and dry season,Vitalize flat, the intimate idle stock assets of power transformating and supplying facility in dry season, extenuate the rich withered contradiction of electrical network, reduce biomass generatorInvestment, reduces biomass material logistics cost, has both improved power station effectiveness of operation, increases again power station periphery peasants and herdsmen income,Reach the effect of accurate poverty alleviation, realize comprehensive utilization and the value of hydraulic power potentials, biomass resource and power station stock assetsMaximize.
Rise so far from the fifties in last century power station, power station is controlled protection system and has been experienced from electromagnetic type to DCSControl the progressive evolution of protection, there are multiple upgraded versions centre, and biomass generator just grows up in recent yearsNew things, it is controlled protection system and directly enters the DCS control protection stage. How to increase biomass generator in power stationAfter control protection systems by two kinds of different stages of development (version) to utilize this Platform integration of power station central control room be oneIndividual system, had both saved capital expenditure, reduced again operations staff, reduced management cost, raised labour productivity, and had no and tasted in the industryExamination.
Summary of the invention
For the deficiency of prior art, the invention provides a kind of power station increases the DCS control of biomass generatorProtection system (distinguish for controlling protection system with power station DCS control protection system and living beings DCS, be called by general letterHBDCS controls protection system), it comprises original hydro-power station control protection system and newly-increased and its network-bus and communication protocol oneThe biomass power generation control protective unit causing, described biomass power generation control protective unit comprises biomass power generation LCU for generator set, lifeThe public LCU of material and biomass fermentation electric motor protecting observing and controlling screen.
According to a preferred embodiment, described biomass power generation LCU for generator set, the public LCU of living beings and biomass fermentationElectric motor protecting observing and controlling screen is all connected to described power station and controls on the communication cable in protection system.
According to a preferred embodiment, described original hydro-power station control protection system is bus-type PLC microcomputer monitor and protectionSystem or EPA DCS micro computer monitoring protection system.
According to a preferred embodiment, described original hydro-power station control protection system comprises server, active station, security protection workStand, communication manager or Ethernet switch, hydraulic generator unit LCU, the public LCU in power station, hydropower generator protectionObserving and controlling screen, route protection screen, main transformer protection observing and controlling screen, security protection facility, the Big Dipper or GPS time service device, modem, printerAnd communication cable.
According to a preferred embodiment, described EPA DCS micro computer monitoring protection system comprise single net, two net,Single-ring network and dual-ring network.
According to a preferred embodiment, described biomass power generation LCU for generator set is that Turbo-generator Set LCU or combustion gas wheel are sent outGroup of motors LCU.
According to a preferred embodiment, the public LCU of described living beings be biomass boiler and source material delivery system LCU orBiomass gasifying furnace and source material delivery system LCU.
According to a preferred embodiment, described communication cable is connected to grid dispatching center via modem.
The present invention has following beneficial effect:
In the present invention, biomass generator control protection system can share power station to control the part of protection system hardPart, thus the fixed investment of biomass generator greatly reduced. In actual applications, can save biomass generatorDCS controls protection system investment 60%～85%. If the medium and small-scale water and electricity in the whole nation 50% stands in increase biomass generatorShi Caiyong DCS of the present invention controls protection system, can save 20～3,000,000,000 yuan of biomass generator DCS system investments, andCan reduce biomass generator operation fixed cost 3～500,000,000 yuan.
In the time adopting DCS of the present invention to control protection system, each biomass generator can reduce operation maintenance personnel 4～8 people, if the medium waterpower generator station in the whole nation 50% arranges biomass generator by method of the present invention, can reduce living beingsTRT operating cost 20～4,000,000,000 yuan, have improved enterprise's labor productivity.
The present invention is the inventor disclosed " power station increases the comprehensive utilization of resources method of biomass generator "Power station controls the upgrade-system of protection system, can promote hydraulic power potentials, biomass resource and power station stock assetsComprehensive utilization and value maximization, can promote biomass generator and power station auxiliary construction, improves power station and biologyThe comprehensive benefit of matter TRT, advances energy agriculture and energy forestry development, helps outlying district peasants and herdsmen to shake off poverty and set out on the road to prosperity.
DCS of the present invention controls protection system and can on the basis of original power station control protection system, upgradeTransformation, the fixed investment of not only having saved biomass fermentation electrical protective device, has simultaneously also significantly reduced biomass generatorOperating cost. In addition, the control protection system of the power station in the present invention and biomass power generation control protective unit have goodNetwork-bus and unification of communication protocol, thereby DCS control protection system is reliable, easy to maintenance.
Brief description of the drawings
Fig. 1 is that in the present invention, DCS controls protection system sketch;
Fig. 2 is that the DCS of embodiment 2 controls protection system sketch;
Fig. 3 is that the DCS of embodiment 3 controls protection system sketch;
Fig. 4 is that the DCS of embodiment 4 controls protection system sketch.
Reference numerals list
1: master server 2: standby server 3: active station
4: security protection work station 5: communication manager/Ethernet switch
6: biomass power generation LCU for generator set 7: the public LCU of living beings
8: hydraulic generator unit LCU9: the public LCU in power station
10: biomass fermentation electric motor protecting observing and controlling screen 11: hydropower generator protection observing and controlling screen
12: route protection screen 13: main transformer protection observing and controlling screen
14: security protection facility 15: communication cable
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
Being illustrated in figure 1 power station of the present invention increases the DCS control protection system sketch of biomass generator. ThisThe DCS that bright power station increases biomass generator controls protection system and comprises original hydro-power station control protection system and newly-increasedThe biomass power generation control protective unit consistent with its network-bus and communication protocol. Biomass power generation control protective unit comprisesBiomass power generation LCU for generator set 6, the public LCU7 of living beings and biomass fermentation electric motor protecting observing and controlling screen 10.
Original hydro-power station control protection system comprises server 1, active station 3, security protection work station 4, communication manager or etherNetwork switch 5, hydraulic generator unit LCU8, the public LCU9 in power station, hydropower generator protection observing and controlling screen 11, route protection screen12, main transformer protection observing and controlling screen 13, security protection facility 14, communication cable 15, the Big Dipper or GPS time service device, modem and printingMachine.
Aforementioned biomass power generation LCU for generator set 6, the public LCU7 of living beings and biomass fermentation electric motor protecting observing and controlling screen 10 all connectBeing connected to power station controls on the communication cable 15 in protection system. Communication cable 15 is connected to dispatching of power netwoks via modemCenter.
Control protection system (hereinafter to be referred as DCS system) composition and the concise and to the point elaboration of principle do with regard to DCS of the present invention below:
1, DCS system configuration principle and scheme
For meeting the production requirement of original hydro-power station and newly-increased biomass generator, ensure device security, reliability service,The running rate that improves power station and newly-increased biomass generator, this control protection system is protected in the control of original hydro-power station microcomputerOn the basis of system, increase the biomass fermentation group of motors control consistent with power station control protection system bus and communications protocol and protectProtecting system, thus upgrade to the DCS control system of advanced technology, dependable performance, maintaining control protection to original hydro-power stationOn basis, the biomass generator of simultaneously realizing increasing is concentrated supervision, operation and decentralised control, can effectively improve electricityThe reliability and maintainability of control equipment, realizes the modernization of controlling, monitoring, operate, and reduces biomass generator investment. RawMaterial Generation Control subsystem equipment adopts on-the-spot preferential control mode.
2, DCS computer control system configuration
DCS system is by server 1, active station 3, security protection work station 4, the communication manager of original hydro-power station control protection systemOr Ethernet switch 5, hydraulic generator unit LCU8, the public LCU9 in power station, hydropower generator protection observing and controlling screen 11, circuitProtection screen 12, main transformer protection observing and controlling screen 13, security protection facility 14, communication cable 15, the Big Dipper or GPS time service device, modem,Printer and the newly-increased public LCU7 of biomass power generation LCU for generator set 6, living beings and biomass fermentation electric motor protecting observing and controlling screen 10Composition. Control range is hydraulic generator unit, power station shared device, biomass fermentation group of motors, the living beings public affairs of original hydro-power stationWith equipment (comprising pretreatment of raw material and conveying, biomass boiler or gasification furnace), protection equipment comprises hydropower generator protectionObserving and controlling screen, route protection screen, main transformer protection observing and controlling screen, biomass fermentation electric motor protecting observing and controlling screen, comprise complete power station andThe biomass power generation system increasing. Original hydro-power station central control room is upgraded to new DCS control room, and monitoring system adopts serviceDevice/client computer mode. Biomass power generation is produced subsystem field control station and is determined by production scale. DCS system is established two operationsStand, two-server (master server, a standby server, and for subsequent use each other). The communication network (backbone network) of systemFor bus-type PLC micro computer monitoring protection system or the EPA DCS micro computer monitoring protection system of original hydro-power station. Internet TransmissionAgreement is also consistent with the network transmission protocol of original hydro-power station.
DCS establishes ups power in control room, for DCS system control office and active station use, in the situation that AC power disappearsKeep the power supply of certain hour, process and make field instrument and equipment to move to peace to the data of DCS system are done to protectivenessFull position, and technique is done to emergent management, prevent that fault from occurring.
3, the field control station of biomass generator
The field control station of biomass generator has been used for the collection of on-site signal, and the order of finishing equipment motor is patrolledCollect and control, complete the monitoring of production process parameters and the automatic adjusting of process loop etc., and enter by communication network and active stationRow data communication. Field control station is respectively established a UPS, for field control station.
4, active station
In DCS control room, establish two active stations, two-server, two active stations corresponding original hydro-power station and newly-increased respectivelyEach subsystem of biomass generator.
Active station major function is:
(1), there is the flow chart that dynamic device state shows and manufacturing parameter shows;
(2), production equipment group and unit start-stop operation panel and equipment running status show;
(3), manufacturing parameter guidance panel and manufacturing parameter grouping show;
(4), the instant and historical trend curve of manufacturing parameter shows;
(5), detailed demonstration and the parameter adjustment of regulating loop;
(6), production status is reported to the police, and total looks show and demonstration in detail;
(7), alarm report and manufacturing parameter report generation and printing;
(8), when original hydro-power station with newly-increased biomass generator has an accident, when fault alarm, can show and recordRelevant parameter, display alarm are processed prompting, and can automatically be sent alarm signal to the beeper of patrolling and examining work and relevant technologies person in timeBreath, is convenient to fix a breakdown in time;
(9), control system state shows;
(10), rights management and operation note.
5, application software
For ensureing newly-increased biomass fermentation motor control protection system and original hydro-power station control protection system compatibility, newly-increased lifeMaterial generator control protection system should be consistent with bus and the agreement of original hydro-power station control protection system, if original power stationConfiguration software is not suitable for biomass fermentation group of motors, and replaceable configuration software or on this basis upgrading exploitation solve.
(1), logical control program function
To all motors on production line, motor-driven valve, the production equipments such as magnetic valve, according to the flow chart showing on active stationAnd guidance panel, adopt keyboard and mouse action, rise by the group selection of field control station finishing equipment, equipment group logical interlockStop, unit start-stop, stops in emergency and failure reset etc.
(2), process control software function
All temperature to production equipment, pressure, flow, valve opening, level of filler material, speed, electric current etc. detect,Show, report to the police, controlled valve, speed etc. are operated, to important device parameter regulate, record.
(3), configuration software
On the basis of DCS system monitoring software, establishment is applicable to operation, the monitoring of the biomass generator feature increasingPicture, parameter arranges picture and completes the collection of each field control station relevant parameters.
Configuration software provides historgraphic data recording, comprises data record, alarm logging, operation note. According to historical dataRecord and its powerful data analysis capabilities, can calculate the per day output in each workshop and water consumption, station-service electric weight, living beings are formerMaterial consumption, and the total output of month, station-service electric weight and consumption biomass material amount etc., this is the reduction totle drilling cost of increasing the total yieldScientific basis is provided. Other functions of management software can increase in the later stage according to actual needs.
6, the setting of the special instrument of biomass generator
(1), biomass generator tail gas funnel is established dust and sensitive chemical ingredient on-line detection device;
(2) it is a set of that, DCS Central Control Room is set up biomass material burglary-resisting system fire alarm installation.
7, the on-the-spot primary instrument of biomass generator
(1), thermometric instrument is selected armouring Pt100 thermal resistance and armoured K-thermocouple;
(2), temperature, pressure transmitter are selected and are introduced or imported product;
(3), material level instrument is selected respectively radar type level-sensing device and radio frequency stuff level switch according to different purposes.
8, cable type selecting
(1), primary detecting element, transmitter to analog signals cable between field control station all select DJYVP type manyCore paired shield cable, control system switching value signal cable is selected KVVP type multicore band sheath copper core shielded cable, other controlCable processed is selected KVV type multicore copper core cable. Thermocouple to cable between temperature transmitter is selected the high temperature of band shielding and sheathOffset-type wire.
(2), the stube cable of the each equipment room of control system and communication cable are supplied with complete sets of equipment.
9, cable laying
Primary element is buried and lay control room inside cable along cable testing bridge to the cable pipe between field control stationOr indoor raising below terrace lay, trunk communication cable lays in outside cable crane span structure.
10, ground protection
The quality of earthed system is anti-interference most important to automation installation, and each field control station and Central Control Room are established respectivelyPut earthing or grounding means. Signal cable screen layer is connected on bonding terminal at case dish one end. The ground connection of computer control system is pressedEquipment manufacturer's requirement is carried out. Instrument board metal shell is connected on electric protective ground bus.
11, the Big Dipper/GPS, printer and system call
The Big Dipper/GPS time service is consistent with the moment of power system in order to ensure this DCS system, is convenient to scheduling and accident, eventBarrier is analyzed, investigation. Printer is to be the document use such as printing reports, and this DCS system is by modem and communication cable and electricityPower control centre realizes dispatching communication, and newly-increased biomass generator is incorporated to after original hydro-power station production system, has shared former waterThe scheduling in power station, communication system, become the subsystem in power station, accepts power station second-level dispatching.
The present invention is particularly useful for power station increases the Comprehensive Control after biomass generator, in actual applications, and canWith the master server 1 in original hydro-power station control protection system, standby server 2, active station 3, security protection work station 4, communication managementMachine or Ethernet switch 5, hydraulic generator unit LCU8, the public LCU9 in power station, hydropower generator protection observing and controlling screen 11, lineRoad protection screen 12, main transformer protection observing and controlling screen 13, security protection facility 14, communication cable 15, the Big Dipper or GPS time service device, modulation /demodulationThe basis such as device, printer is upper, increases the biomass fermentation group of motors consistent with power station DCS grid bus and communication protocolLCU6, the public LCU7 of living beings and biomass fermentation electric motor protecting observing and controlling screen 10 compositions, thus protection system is controlled in power stationUpgrade to DCS and control protection system.
The biomass power generation LCU for generator set 6 of aforementioned increase, the public LCU7 of living beings and biomass fermentation electric motor protecting observing and controlling screen10 is consistent with hardware, software and communication network bus and the communication protocol of power station control protection system, thereby DCS is controlledProtection system is reliable, easy to maintenance. If power station control protection system be traditional electrical magnetic-type or cannot with biomass fermentationGroup of motors LCU is when in hardware, software and communication, network-bus is consistent with communication protocol, power station controlled to protection systemDevice feature is replaced by and biomass power generation LCU for generator set 6, the public LCU7 of living beings and biomass fermentation electric motor protecting observing and controlling screen 10The device feature that phase network-bus is consistent with communication protocol.
Preferably, the control of the power station in the present invention protection system is bus-type PLC micro computer monitoring protection system or industryEthernet DCS micro computer monitoring protection system. Aforementioned EPA DCS micro computer monitoring protection system comprises single net, two net, monocycleNet and dual-ring network DCS control protection system.
Preferably, biomass power generation LCU for generator set 6 is Turbo-generator Set LCU or gas turbine generator group LCU. Living beingsPublic LCU7 is biomass boiler and source material delivery system LCU or biomass gasifying furnace and source material delivery system LCU.
Embodiment 1
Certain mountain area medium hydropower station, installed capacity 3 × 12000=36000kw, generator voltage 10.5kv, through oneThe main transformer of 50000KVA boosts and is connected to the grid through LGJ-150/50km transmission line of electricity for 110kv again. Power station is average year for many yearsUtilize hour 3150h, annual electricity generating capacity 11340 ten thousand kwh, wherein, wet season generated energy 8,000 ten thousand kwh, account for gross generation70.5%. Flat, dry season, generated energy 3,340 ten thousand kwh, accounted for 29.5% of gross generation. Flat, dry season average generated output6700kw, booster stations, transmission line of electricity and the power transmission and transformation abilities such as protection system and scheduling communications system of controlling are on average had more than needed25300kw。
Power station periphery belongs to typical farming and pastoral area, main product corn, afforestation rate 45% left and right. Four other plants are with broad-leaved shrubWith bamboo class be main, account for 95% all plant firewood forests and bamboo class suitable for afforestationly, at power station 20km scope Nei You peasant household 7000 families. According toMeasuring and calculating, the maize straw that annual resourcebility utilizes, discarded branch, corner material are felled in four other plants, firewood forests, bamboo class and forestryDeng biomass resource total amount approximately 20～300,000 t.
In order to utilize the abundant biomass resource of power station periphery, can near power station, increase biomass generator.Particularly, by power station, owner provides funds, and invests approximately 13,000 ten thousand yuan build 2 × 10000=20000kw on powerhouse of hydropower station sideBiomass pyrogenation gasification stove and gas turbine generator group, and the fertile 13500t/a of coproduction fuel oil 6800t/a and complex ecological, designAnnual utilization hours 5000h. Biomass fermentation motor is consistent with hydropower generator rated voltage, is 10.5kv, with hydropower stationMachine paired running. Biomass fermentation motor excitation system increased newly encourages function, and two net DCS in power station are controlled to protection system upgradingFor two net DCS systems. The central control room of biomass power plant and server, active station, security protection work station, communication pipe are cancelledReason machine or Ethernet switch, route protection screen, main transformer protection observing and controlling screen, can save biomass generator DCS and control protection2,000,000 yuan of system investments, thus realize power station and biomass generator centralized Control, reduce biomass generator operationFixed cost, has reduced biomass generator operation maintenance personnel, has improved labor productivity. Hydraulic power potentials, life are realizedThe comprehensive utilization of physical resources and power station stock assets and value maximization.
Embodiment 2
Certain mountain area small hydropower station, installed capacity 2 × 2500=5000kw, generator voltage 6.3kv, through oneThe main transformer of 6300KVA boosts and is connected to the grid through LGJ-185/19km transmission line of electricity for 35kv again. Power station is average annual interest for many yearsWith a hour 3600h, annual electricity generating capacity 1800 ten thousand kwh, wherein, wet season generated energy 1,200 ten thousand kwh, account for 66.67% of gross generation,Flat, dry season, generated energy 6,000,000 kwh, accounted for 33.33% of gross generation, and flat, dry season, average generated output 1200kw, boostedStand, transmission line of electricity and control on average 3800kw more than needed of the power transmission and transformation abilities such as protection system and scheduling communications system.
Power station periphery belongs to typical farming region, main product paddy rice, corn, afforestation rate 25% left and right. Four other plants are with wealthyLeaf shrub and bamboo class are main, account for 80% all plant firewood forests and bamboo class suitable for afforestationly, in power station 10km scope Nei You peasant household2000 families. According to measuring and calculating, paddy rice and maize straw that annual resourcebility utilizes, four other plants, firewood forests and forestry are felled discardedApproximately 25000～the 35000t of biomass resource total amount such as branch corner material, bamboo class.
In order to utilize the abundant biomass resource of power station periphery, can be in power station or near increase biomass fermentation DensoPut. Particularly, by power station, owner provides funds, and invests approximately 2,000 ten thousand yuan of streams of building 2 × 1600=3200kw in idle placeChange bed direct combustion biomass boiler and supporting Turbo-generator Set, design annual utilization hours 5000h, biomass fermentation motor and water powerThe generator rated voltage of standing is consistent, is 6.3kv, with hydropower generator paired running. Biomass fermentation motor excitation system is newly-increasedCross and encourage function, the bus-type PLC in power station is controlled to protection system and upgrade to bus-type DCS system. Cancel biomass power generationThe central control room of factory and server, active station, security protection work station, communication manager or Ethernet switch, route protection screen,Main transformer protection observing and controlling screen, can save biomass generator DCS and control 1,200,000 yuan of protection system investments, thereby realize power stationWith biomass generator centralized Control, reduce biomass generator operation fixed cost, reduce biomass generatorOperation maintenance personnel, have improved labor productivity. Realize combining of hydraulic power potentials, biomass resource and power station stock assetsClose and utilize and value maximization.
Embodiment 3
Certain mountain area medium hydropower station, installed capacity 4 × 8000=36000kw, generator voltage 10.5kv, through oneThe main transformer of 50000KVA boosts and is connected to the grid through LGJ-150/70km transmission line of electricity for 110kv again. Power station is average year for many yearsUtilize hour 3400h, annual electricity generating capacity 12240 ten thousand kwh, wherein, wet season generated energy 8,500 ten thousand kwh, account for gross generation69.4%. Flat, dry season, generated energy 3,740 ten thousand kwh, accounted for 30.6% of gross generation. Flat, dry season average generated output7480kw, booster stations, transmission line of electricity and the power transmission and transformation abilities such as protection system and scheduling communications system of controlling are on average had more than needed28520kw。
Power station periphery belongs to typical farming and pastoral area, main product corn, afforestation rate 35% left and right. Four other plants are with broad-leaved shrubWith bamboo class be main, account for 90% all plant firewood forests and bamboo class suitable for afforestationly, at power station 20km scope Nei You peasant household 8000 families. According toMeasuring and calculating, the maize straw that annual resourcebility utilizes, discarded branch, corner material are felled in four other plants, firewood forests, bamboo class and forestryDeng biomass resource total amount approximately 20～300,000 t.
In order to utilize the abundant biomass resource of power station periphery, can be in power station or near increase biomass fermentation DensoPut. Particularly, by power station, owner provides funds, and invests approximately 17,000 ten thousand yuan build 2 × 12500=on powerhouse of hydropower station sideThe biomass pyrogenation gasification stove of 25000kw and gas turbine generator group, and coproduction fuel oil 8500t/a and complex ecological fertilizer16800t/a, design annual utilization hours 5000h. Biomass fermentation motor is consistent with hydropower generator rated voltage, is 10.5kv,With hydropower generator paired running. Biomass fermentation motor excitation system increased newly encourages function, by the dual-ring network DCS control in power stationProtection system processed upgrades to dual-ring network DCS system. Cancelled the central control room of biomass power plant and server, active station,Security protection work station, communication manager or Ethernet switch, route protection screen, main transformer protection observing and controlling screen, can save biomass fermentationElectric installation DCS controls 1,800,000 yuan of protection system investments, thereby realizes power station and biomass generator centralized Control, reducesBiomass generator operation fixed cost, has reduced biomass generator operation maintenance personnel, has improved labor productivity.Comprehensive utilization and the value maximization of hydraulic power potentials, biomass resource and power station stock assets are realized.
Embodiment 4
Certain mountain area medium hydropower station, installed capacity 2 × 3200=6400kw, generator voltage 10.5kv, through oneThe main transformer of 8000KVA boosts and is connected to the grid through LGJ-150/35km transmission line of electricity for 35kv again. Power station is average annual interest for many yearsWith a hour 3500h, annual electricity generating capacity 2240 ten thousand kwh, wherein, wet season generated energy 1,550 ten thousand kwh, account for 69.2% of gross generation.Flat, dry season, generated energy 6,900,000 kwh, accounted for 30.8% of gross generation. Flat, dry season, average generated output 1380kw, boostedStand, transmission line of electricity and control on average 5020kw more than needed of the power transmission and transformation abilities such as protection system and scheduling communications system.
Power station periphery belongs to typical farming and pastoral area, main product corn, afforestation rate 30% left and right. Four other plants are with broad-leaved shrubWith bamboo class be main, account for 80% all plant firewood forests and bamboo class suitable for afforestationly, at power station 15km scope Nei You peasant household 3000 families. According toMeasuring and calculating, the maize straw that annual resourcebility utilizes, discarded branch, corner material are felled in four other plants, firewood forests, bamboo class and forestryDeng biomass resource total amount approximately 8～130,000 t.
In order to utilize the abundant biomass resource of power station periphery, can be in power station or near increase biomass fermentation DensoPut. Particularly, by power station, owner provides funds, and invests approximately 3,500 ten thousand yuan build 1 × 5000=5000kw on powerhouse of hydropower station sideBiomass pyrogenation gasification stove and gas turbine generator group, and the fertile 3250t/a of coproduction fuel oil 1600t/a and complex ecological, designAnnual utilization hours 5000h. Biomass fermentation motor is consistent with hydropower generator rated voltage, is 10.5kv, with hydropower stationMachine paired running. Biomass fermentation motor excitation system increased newly encourages function, and single net DCS in power station is controlled to protection system upgradingFor single net DCS system. The central control room of biomass power plant and server, active station, security protection work station, communication pipe are cancelledReason machine or Ethernet switch, route protection screen, main transformer protection observing and controlling screen, can save biomass generator DCS and control protection700,000 yuan of system investments, thus realize power station and biomass generator centralized Control, reduce biomass generator operationFixed cost, has reduced biomass generator operation maintenance personnel, has improved labor productivity. Hydraulic power potentials, life are realizedThe comprehensive utilization of physical resources and power station stock assets and value maximization.
It should be noted that above-mentioned specific embodiment is exemplary, those skilled in the art can be open in the present inventionUnder the inspiration of content, find out various solutions, and these solutions also all belong to open scope of the present invention and fall into thisWithin bright protection domain. It will be understood by those skilled in the art that description of the present invention and accompanying drawing thereof to be illustrative and be notForm limitations on claims. Protection scope of the present invention is limited by claim and equivalent thereof.
Claims (8)
1. power station increases a DCS control protection system for biomass generator, it is characterized in that, comprises original hydro-power station controlProtection system processed and the newly-increased biomass power generation control protective unit consistent with its network-bus and communication protocol, described biologyMatter Generation Control protective device comprises biomass power generation LCU for generator set (6), the public LCU of living beings (7) and biomass power generation organizational securityProtect observing and controlling screen (10).
2. power station as claimed in claim 1 increases the DCS control protection system of biomass generator, it is characterized in that,Described biomass power generation LCU for generator set (6), the public LCU of living beings (7) and biomass fermentation electric motor protecting observing and controlling screen (10) all connectControl on the communication cable (15) in protection system to described power station.
3. power station as claimed in claim 2 increases the DCS control protection system of biomass generator, it is characterized in that,Described original hydro-power station control protection system is that bus-type PLC micro computer monitoring protection system or EPA DCS micro computer monitoring are protectedProtecting system.
4. power station as claimed in claim 3 increases the DCS control protection system of biomass generator, it is characterized in that,Described original hydro-power station control protection system comprises master server (1), standby server (2), active station (3), security protection work station(4), communication manager or Ethernet switch (5), hydraulic generator unit LCU (8), the public LCU in power station (9), power station are sent outElectric motor protecting observing and controlling screen (11), route protection screen (12), main transformer protection observing and controlling screen (13), security protection facility (14), the Big Dipper or GPS awardTimer, modem, printer and communication cable (15).
5. power station as claimed in claim 3 increases the DCS control protection system of biomass generator, it is characterized in that,Described EPA DCS micro computer monitoring protection system comprises single net, two net, Single-ring network and dual-ring network.
6. the power station as described in one of claim 1 to 5 increases the DCS control protection system of biomass generator, its spyLevy and be, described biomass power generation LCU for generator set (6) is Turbo-generator Set LCU or gas turbine generator group LCU.
7. the power station as described in one of claim 1 to 5 increases the DCS control protection system of biomass generator, its spyLevy and be, the public LCU of described living beings (7) is biomass boiler and source material delivery system LCU or biomass gasifying furnace and raw materialInduction system LCU.
8. the power station as described in one of claim 2 to 5 increases the DCS control protection system of biomass generator, its spyLevy and be, described communication cable (15) is connected to grid dispatching center via modem.
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