CN104376165A - Auxiliary service policy simulation model for user to participate in new energy power generation peak shaving - Google Patents
Auxiliary service policy simulation model for user to participate in new energy power generation peak shaving Download PDFInfo
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- CN104376165A CN104376165A CN201410642593.1A CN201410642593A CN104376165A CN 104376165 A CN104376165 A CN 104376165A CN 201410642593 A CN201410642593 A CN 201410642593A CN 104376165 A CN104376165 A CN 104376165A
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Abstract
The invention discloses an auxiliary service policy simulation model for a user to participate in new energy power generation peak shaving. The model comprises a system dynamic model, a system dynamic simulation model, a policy mixing model ensuring participation of the user in peak shaving and a peak shaving management technical standard model. The auxiliary service policy simulation model for the user to participate in new energy power generation peak shaving can overcome the defects that in the prior art, production cost is high, economic performance is poor, and power utilization reliability is low, thereby achieving the advantages of low production cost, good economic performance and high power utilization reliability.
Description
Technical field
The present invention relates to electric power energy-saving technical field, particularly, relate to the assistant service policy simulation model that a kind of user participates in generation of electricity by new energy peak regulation.
Background technology
Along with the wind-powered electricity generation capacity of connecting system increases gradually, the peak regulation difficulty that network system faces also increases thereupon.Especially large user is as difficult in high energy enterprise participation peak regulation will become the online of solution current wind-powered electricity generation to transfer power consumer, abandons the important measures frequently of wind phenomenon.For the power consumer having Load Regulation ability, can participate in peak regulation by interrupting electricity consumption at specific time period, interruptible load can affect to the production of user, can give certain compensation and participate in peak regulation to encourage it.Power consumer participates in peak regulation and brings many benefits to system, and the most important peak-valley difference being reduction of system, reduces system operation cost, can reduce the start capacity of system simultaneously, reduces system minimum technology and exerts oneself, and the system of adding is dissolved the ability of wind-powered electricity generation.
In order to encourage Wind Power Development, country proposes the policy that grid company fully purchases wind-powered electricity generation electricity, but is difficult to the situation generated electricity in full because peak-load regulating off-capacity causes wind energy turbine set, abandons wind phenomenon seriously, hinders the development of wind-powered electricity generation.Generally, the demand of wind-electricity integration to peak equals wind capacity integrated into grid.Cause the main cause of peak deficiency be due to system loading level determine when, peak-load regulating finite capacity, part fired power generating unit cannot be surfed the Net generating, wastes the peak modulation capacity of part fired power generating unit.The dissolve ability of wind-powered electricity generation of system is area between system loading curve and minimum technology are exerted oneself, because region internal loading level is difficult to improve in short-term, sent outside by invariable power or inverse probability electric power and can increase system loading level and improve wind electricity digestion capability, simultaneously can reduce system peak load by peak load period interrupt unit load and reduce start capacity and reduce system minimum technology and exert oneself and increase wind electricity digestion capability.By the indemnifying measure of necessity, encouraging power consumer to reduce or interrupt the load reduction system peak load of peak load period will be feasible and effective measures.
The wind-powered electricity generation investor makes wind-powered electricity generation investment decision according to benefit cost ratio, when current benefit cost ratio is greater than expecting curve, the investor increases wind-powered electricity generation investment, corresponding peak regulation demand also will increase, peak vacancy will increase, and now must increase and compensate rate to transfer more user's peak adjusting capacity to ensure the generated energy of wind energy turbine set.Along with the increase of peak regulation rate, the peak of user increases accordingly, the peak regulation expense also corresponding increase that wind energy turbine set pays, and produces degenerative effect to wind-powered electricity generation investment.For the user participating in peak regulation, minimizing or interruptible load can cause certain loss to its production, as long as but reimbursement for expenses can make up its loss, and will play an active part in peak regulation, and in peak regulation process, make maximize revenue by controlling its peak.
Electric system is as the important component part of energy resource system, and the overall process of its planning, construction, production, consumption is also the inertia system of a large time constant.Electric generation investment construction is the important step of this inertia system, has capital-intensity high, and the construction period is long, the feature that the phase of being on active service is long.Along with the propelling of power market reform, electric generation investment construction is by the adjustment of market equilibrium, and show as a complicated nonlinear dynamic system, technical scheme kinetic model of the present invention, Theories and methods remove analysis and control.
The wind-powered electricity generation investor is subject to bringing out of profit, increases the investment of wind-powered electricity generation capacity.Along with the increase of wind-powered electricity generation capacity, the peak that electrical network is dissolved needed for wind-powered electricity generation also will increase, peak shortage will certainly be caused, the peak can transferring some electrical power user by increasing compensation rate makes up temporary transient vacancy, corresponding reimbursement for expenses also can improve, thus reduce the profit of wind energy turbine set, form a negative feedback.While wind-powered electricity generation capacity increases, due to increase and the wind power resources properties deteriorate of construction cost, the cost of Wind Power Generation also will increase, and also can have influence on wind energy turbine set profit, form a negative feedback.
Because the corresponding reimbursement for expenses of increase compensating rate also can increase, the profit of power consumer is increased, be subject to bringing out of profit, power consumer increases peak to obtaining larger profit, but the increase of peak reduces the product yield of enterprise, add the unit cost of production, inhibit the increase of profit, define two negative feedbacks.System cause-effect relationship as shown in Figure 1.
Therefore, assistant service policy power consumer being participated in peak regulation emulates, and can improve the enthusiasm that user participates in peak regulation, meanwhile, can improve the benefit of user and electrical network to the full extent.
Realizing in process of the present invention, inventor finding at least to exist in prior art that production cost is high, deficiency in economic performance and the defect such as electricity consumption reliability is low.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose the assistant service policy simulation model that a kind of user participates in generation of electricity by new energy peak regulation, to realize the advantage that production cost is low, good in economic efficiency and electricity consumption reliability is high.
For achieving the above object, the technical solution used in the present invention is: a kind of user participates in the assistant service policy simulation model of generation of electricity by new energy peak regulation, comprises the system dynamics model, system dynamics simulation model, the policy mix model of guarantee user and peak regulation and the peak regulation administrative skill master pattern that are equipped with successively.
Further, described system dynamics model, for the assistant service policy simulation using the user of system dynamics and method establishment to participate in peak regulation; And/or,
Described system dynamics simulation model, emulates for the assistant service policy simulation model using user to participate in generation of electricity by new energy peak regulation; And/or,
The policy mix model of described guarantee user and peak regulation, the assistant service policies and measures participating in peak regulation for providing user; And/or,
Described peak regulation administrative skill master pattern, for providing an administrative standard for peak regulation management, is convenient to peak regulation management and decision.
Further, described system dynamics model, uses the user of system dynamics and method establishment to participate in the operation of the assistant service policy simulation of peak regulation, specifically comprises:
The wind-powered electricity generation investor compares H according to the revenue and cost of expection
0, determine the Investment Trend of following wind-powered electricity generation; When the revenue and cost ratio of reality is greater than expection, strengthen dynamics of investment, wind-powered electricity generation capacity increases thereupon, otherwise then reduces investment; Wind-powered electricity generation investment, as capital concentrated industry, should be taken measures in investment process, avoid high demand for investment to cause the wasting of resources; The wind-powered electricity generation capacity equation of motion can be expressed as:
W is wind-powered electricity generation capacity, and Section 1 is proportional, and α is scale-up factor, and wind-powered electricity generation capacity is according to the proportional change of difference of actual desired revenue and cost ratio; Section 2 is differential term, and K is differential coefficient;
Wind-powered electricity generation investment revenue and cost ratio:
B
W＝P
WQ
W-C
C(1-3)；
C
W＝WI (1-4)；
B
w, C
wrepresent the revenue and costs of wind-powered electricity generation investment respectively, P
w, Q
wbe respectively wind-powered electricity generation rate for incorporation into the power network and electricity, C
cfor peak regulation cost of compensation.
ΔH＝H-H
0(1-5)；
H
0use C
wtable function represent, the investor of rationality can be desirably in cost of investment when increasing, and revenue and cost ratio can increase to some extent, at least should remain unchanged;
The unit capacity cost I table function of W represents; Reimbursement for expenses: in order to encourage high energy enterprise participation peak regulation, the reimbursement for expenses of its necessity need be paid;
C
C＝R·M (1-6)；
R, M are respectively rate and the peak regulation effect of peak regulation compensation;
Compensate the rate equation of motion: compensate rate and determined by the supplydemand relationship of peak, when supply falls short of demand, rate goes up, and vice versa;
Section 1 is proportional component, and β is scale-up factor, compensates rate and adjusts according to peak vacancy ratio; Section 2 is differentiation element, and K is differential coefficient;
M
d＝W (1-8)；
M
0＝M
T+M
H+M (1-9)；
ΔM＝M
d-M
0(1-10)；
M
0, M
dbe respectively the supply and demand of peak, peak demand equals wind-powered electricity generation capacity, supplies by fired power generating unit peak M
t, hydroelectric peak capacity M
hand high energy peak M forms, Δ M is peak vacancy, and when peak has vacancy, generation vacancy online generating can not be abandoned wind by wind-powered electricity generation, and generated energy will reduce, and η is wind energy turbine set availability;
The high energy enterprise peak equation of motion: high energy enterprise expects using profit when not participating in peak regulation as profit, when participating in peak regulation profit and being greater than expected profit, peak is controlled, namely according to the adjustment of profit increment rate direction, to obtaining larger profit according to the increase trend of profit; When participating in peak regulation and making profit be less than expected profit, rapid adjustment peak is to 0;
B
0＝T
0·(P-C
I0) (1-13)；
B＝T·(P-C
I) (1-14)；
ΔB＝B-B
0(1-15)；
ΔB＝B-B
0(1-16)；
γ, K are respectively adjustment factor, B, B
0be respectively profit and the profit expection of high energy enterprise, T, P are respectively output and product price; C
ifor unit cost, along with the increase of high energy peak, the interruptible load time increases, and thermal loss increases thereupon, and unit cost exponentially increases, and is expressed as the table function of peak M;
Output T also represents with the table function of peak, and along with the increase of peak, enterprise's production time and efficiency all can reduce, and output decreases.
Further, described system dynamics simulation model, the assistant service policy simulation model using user to participate in generation of electricity by new energy peak regulation carries out the operation emulated, and specifically comprises:
Vensim system dynamics simulation software is used to simulate above-mentioned model;
Utilize the model built, participate in peak-load regulating to high energy power consumer, the policy of wind-powered electricity generation of dissolving carries out system dynamics emulation, the susceptibility that the policy that simultaneously analyzes is sent outside one's respective area electricity and high energy product price changes;
Further electric power to be sent outside and the susceptibility of metallurgic product price to policy is analyzed.
Further, the policy mix model of described guarantee user and peak regulation, the operation of the assistant service policies and measures providing user to participate in peak regulation, specifically comprises:
3.1) implement high energy user preferential electricity price, encourage user power utilization, improve system loading level, contribute to realizing Gansu wind-powered electricity generation on-site elimination;
3.2) implement high energy user to avoid the peak hour time-of-use tariffs, encourage to have the high energy user of load peak modulation capacity to avoid the peak hour operations, raising system wind electricity digestion capability;
3.3) pay close attention to high energy industry market situation, in conjunction with the breach situation of peak after large-scale wind power access, adjustment high energy user participates in the compensation rate of peak regulation, makes reimbursement for expenses can cover the loss of the high energy user caused due to participation peak regulation;
3.4) explore interruptible load Demand-side auction market compensation mechanism, set up Demand-side assisted hatching that is open, fair, competition.
Further, described peak regulation administrative skill master pattern, for peak regulation management provides an administrative standard, be convenient to the operation of peak regulation management and decision, specifically comprise:
4.1) setting of subject content and the scope of application;
4.2) setting of reference to standard;
4.3) setting of term;
4.4) setting of technical requirement.
The user of various embodiments of the present invention participates in the assistant service policy simulation model of generation of electricity by new energy peak regulation, owing to comprising the system dynamics model, system dynamics simulation model, the policy mix model of guarantee user and peak regulation and the peak regulation administrative skill master pattern that are equipped with successively; Thus can overcome that production cost in prior art is high, deficiency in economic performance and the low defect of electricity consumption reliability, to realize the advantage that production cost is low, good in economic efficiency and electricity consumption reliability is high.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from instructions, or understand by implementing the present invention.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for instructions, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is system cause-effect relationship figure in prior art;
Fig. 2 expects in the present invention that wind-powered electricity generation investment revenue and cost are than figure;
Fig. 3 is apoplexy electric unit cost of electricity-generating figure of the present invention;
Fig. 4 is high energy unit cost of production figure in the present invention;
Fig. 5 is high energy enterprise production figure in the present invention;
Fig. 6 is long-pending flow graph in the present invention;
Fig. 7 is policy simulation figure in the present invention;
Fig. 8 is Wind Power Generation Capacity Plan in the present invention;
Fig. 9 compensates rate figure in the present invention;
Figure 10 is high energy peak figure in the present invention;
Figure 11 is power load control system primary structure schematic diagram in the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
According to the embodiment of the present invention, as Figure 1-Figure 11, provide the assistant service policy simulation model that a kind of user participates in generation of electricity by new energy peak regulation, relate to system simulation model and technical standard that user participates in generation of electricity by new energy peak regulation.
Technical scheme of the present invention, establish the system dynamics model that power consumer participates in peak regulation, policy power consumer being participated in peak regulation has carried out dynamics simulation, analyzes the evolutionary process of Wind Power Generation and power consumer participation peak regulation assistant service policy.
The technical solution adopted in the present invention is, user participates in the assistant service policy simulation model of generation of electricity by new energy peak regulation, comprises system dynamics model, system dynamics emulation successively and ensures policy mix and peak regulation administrative skill standard four parts of user and peak regulation.
Wherein, system dynamics model is the assistant service policy simulation model using the user of system dynamics and method establishment to participate in peak regulation.System dynamics emulation is that the assistant service policy simulation model using user to participate in generation of electricity by new energy peak regulation emulates.Ensure that the policy mix of user and peak regulation provides the assistant service policies and measures that user participates in peak regulation.Peak regulation administrative skill standard provides an administrative standard for peak regulation manages, thus is convenient to peak regulation management and decision.
Technical scheme of the present invention, by prediction wind power output, obtain the wind-powered electricity generation capacity of expecting, meanwhile, high energy enterprise carries out the adjustment expected according to wind-powered electricity generation capacity, simultaneously and practical adjustments contrast, if actual specific expection is good, high energy enterprise is exactly the access strengthening new forms of energy, otherwise, the access of new forms of energy will be reduced.And emulated by system dynamics simulation software by this model, thus obtain the assistant service policy of high energy user.
model is emulated by system dynamics model, system dynamics, ensure that the policy of user and peak regulation and peak regulation manage skill
art standard etc. four part composition, is described in detail to these four parts below.
1, system dynamics model
The wind-powered electricity generation investor compares H according to the revenue and cost of expection
0, determine the Investment Trend of following wind-powered electricity generation.When the revenue and cost ratio of reality is greater than expection, strengthen dynamics of investment, wind-powered electricity generation capacity increases thereupon, otherwise then reduces investment.Wind-powered electricity generation investment, as capital concentrated industry, should be taken measures in investment process, avoid high demand for investment to cause the wasting of resources.The wind-powered electricity generation capacity equation of motion can be expressed as:
W is wind-powered electricity generation capacity, and Section 1 is proportional, and α is scale-up factor, and wind-powered electricity generation capacity is according to the proportional change of difference of actual desired revenue and cost ratio.Section 2 is differential term, and K is differential coefficient, when the trend that profit increases reduces gradually, reduces investment, avoids high demand for investment, cause the wasting of resources.
Wind-powered electricity generation investment revenue and cost ratio:
B
W＝P
WQ
W-C
C(1-3)；
C
W＝WI (1-4)；
B
w, C
wrepresent the revenue and costs of wind-powered electricity generation investment respectively, P
w, Q
wbe respectively wind-powered electricity generation rate for incorporation into the power network and electricity, C
cfor peak regulation cost of compensation.
ΔH＝H-H
0(1-5)；
H
0use C
wtable function represent, the investor of rationality can be desirably in cost of investment when increasing, and revenue and cost ratio can increase to some extent, at least should remain unchanged.As shown in Figure 2.
The unit capacity cost I table function of W represents, generating exploitation always selects difficulty of construction little, first the place that wind regime resource is good is developed, along with going deep into of Wind Power Generation, difficulty of construction will increase, and the cost of development of wind-powered electricity generation will raise gradually, and wind regime resource also can be deteriorated gradually simultaneously, the utilized hourage of wind energy turbine set will reduce, and cost of electricity-generating Shang Shi unit of the unit cost of electricity-generating exponentially sharing wind-powered electricity generation increases.As shown in Figure 3.
Reimbursement for expenses: in order to encourage high energy enterprise participation peak regulation, the reimbursement for expenses of its necessity need be paid.In order to simplify, the effect here enterprise participation peak regulation produced, as state variable, is not here probed into as the production process of peak regulation effect and the assignment problem of expense.
C
C＝R·M (1-6)；
R, M are respectively rate and the peak regulation effect of peak regulation compensation.
Compensate the rate equation of motion: compensate rate and determined by the supplydemand relationship of peak, when supply falls short of demand, rate goes up, and vice versa.
Section 1 is proportional component, and β is scale-up factor, compensates rate and adjusts according to peak vacancy ratio.Section 2 is differentiation element, and K is differential coefficient, prevents overregulating of rate from causing vibration.
M
d＝W (1-8)；
M
0＝M
T+M
H+M (1-9)；
ΔM＝M
d-M
0(1-10)；
M
0, M
dbe respectively the supply and demand of peak, peak demand equals wind-powered electricity generation capacity, supplies by fired power generating unit peak M
t, hydroelectric peak capacity M
hand high energy peak M forms, Δ M is peak vacancy, and when peak has vacancy, generation vacancy online generating can not be abandoned wind by wind-powered electricity generation, and generated energy will reduce, and η is wind energy turbine set availability.
The high energy enterprise peak equation of motion: high energy enterprise expects using profit when not participating in peak regulation as profit, when participating in peak regulation profit and being greater than expected profit, peak is controlled, namely according to the adjustment of profit increment rate direction, to obtaining larger profit according to the increase trend of profit.When participating in peak regulation and making profit be less than expected profit, rapid adjustment peak is to 0.
B
0＝T
0·(P-C
I0) (1-13)；
B＝T·(P-C
I) (1-14)；
ΔB＝B-B
0(1-15)；
ΔB＝B-B
0(1-16)；
γ, K are respectively adjustment factor, B, B
0be respectively profit and the profit expection of high energy enterprise, T, P are respectively output and product price.C
ifor unit cost, along with the increase of high energy peak, the interruptible load time increases, and thermal loss increases thereupon, and unit cost exponentially increases, and can be expressed as the table function of peak M, as shown in Figure 4.
Output T also represents with the table function of peak, and along with the increase of peak, enterprise's production time and efficiency all can reduce, and output decreases, as shown in Figure 5.
2, system dynamics emulation
Use Vensim system dynamics simulation software to simulate above-mentioned model, the long-pending flow graph of model as shown in Figure 5.In simulation process, be provided with some external environment conditions, electricity needs increases according to the growth rate in year 10%, consider that Gansu is the large province of resource, arrange and certain send power outside, suppose that sending power outside sends outside according to firm power, invariable power is sent outside not to be affected the peak regulation in one's respective area, improve the load level of one's respective area, consider the reality that system loading peak-valley difference strengthens year by year simultaneously, be provided with peak-valley difference and increase link.Fired power generating unit is surfed the Net at a competitive price and is progressively promoted, and is provided with the link of bidding of thermoelectricity in model.Wind-powered electricity generation capacity needs the longer construction period from being planned for online generating, is provided with the delay link of 3 years in wind-powered electricity generation capacity decisions.The production adjustment of high energy enterprise also needs the regular hour, is provided with the delay of a week in high energy peak regulation link.
With Gansu Province's certain typical daily load data in 2011 for object, Simulation of System Dynamics is carried out to model.Suppose that sending electricity outside is 10000MWh, sends outside according to invariable power, sending load outside is 417MW.
Utilize the model built, participate in peak-load regulating to high energy power consumer, the policy of wind-powered electricity generation of dissolving has carried out system dynamics emulation, the susceptibility that the policy that simultaneously analyzes is sent outside one's respective area electricity and high energy product price changes.
Fig. 7 gives the result of policy simulation.In recent years, wind-powered electricity generation capacity investment steady-state growth, the exploitation through about 10 years progressively tended towards stability.The development of policy of regulation and control on wind-powered electricity generation of wind-powered electricity generation capacity has important impact, and after adding differentiation element, due to after profit rising tendency slows down, suppressed in time to the investment of wind-powered electricity generation capacity, wind-powered electricity generation capacity does not occur that namely overcapitalization do not appear in overshoot.Invest this capital concentrated industry for wind-powered electricity generation, overcapitalization can cause the great wasting of resources, is suppressed to be necessary in time to investment when profit trend slows down.Nearly 10 years, high energy enterprise participation peak regulation will play an important role to wind electricity digestion, because load level is low, normal power supplies is difficult to play one's part to the full, and high energy enterprise adjusts by adjustment power load the wind electricity digestion capability increasing system to system loading curve.Compensate impact and the same Long-term change trend of peak that rate is subject to supplydemand relationship.After 10 years, due to the raising of load level, the peak modulation capacity of system convention power supply completely can the wind-powered electricity generation of consumption system, and now, the effect of power consumer peak regulation to wind electricity digestion will be no longer obvious.
Further electric power to be sent outside and the susceptibility of metallurgic product price to policy is analyzed.Fig. 8-10 gives electric power and sends product price under condition outside and to go up and under product price permanence condition, electric power sends the variation tendency with each state variable not sending three kinds of situations outside outside.Fig. 8 shows, and electric power is sent outside wind-powered electricity generation investment effect obvious, because electric power sends the digestion capability adding one's respective area system wind-powered electricity generation outside, facilitates the development of wind-powered electricity generation.From Fig. 9, Figure 10, electric power is sent outside also has material impact to power consumer participation peak regulation, send due to electric power the system of adding outside to dissolve the ability of wind-powered electricity generation, system will reduce the demand that power consumer participates in peak regulation, and compensation rate and high energy peak also reduce thereupon accordingly.The enthusiasm of price on high energy enterprise participation peak regulation of metallurgic product has important impact, after product price goes up, the profit expection of enterprise increases, add the cost of its participation peak regulation of excitation, corresponding compensation rate improves, and the enthusiasm of high energy enterprise participation peak regulation reduces, the also corresponding reduction of its peak provided.Meanwhile, metallurgic product rise in price causes the oscillation on small scale of high energy user's peak adjusting rate and peak, should pay close attention to the price change of metallurgic product in the operational process of reality.
Nearly 10 years, it is obvious to the dissolve effect of wind-powered electricity generation of system that power consumer participates in peak regulation, in conjunction with high energy market conditions, should formulate perfect policy execution scheme, encourage power consumer to participate in peak regulation, promote Wind Power Development.Meanwhile, power planning department should take necessary regulation and control to the development of wind-powered electricity generation, keeps the development that wind-powered electricity generation is continual and steady, should do one's utmost to avoid wind-powered electricity generation high demand for investment, cause the wasting of resources.
3, ensure that user participates in the policy mix of peak regulation
Power supply architecture contradiction based on thermoelectricity is difficult to reverse in a short time, and along with the increasing of Wind Power Generation scale, Gansu Power Grid is faced with severe peak regulation test.Power consumer, especially high energy user has the ability of certain Load Regulation, when peak regulation difficulty appears in system, encourages high energy user to participate in peak regulation, has enriched peak load regulation network resource, contributed to Gansu wind-powered electricity generation and realize on-site elimination.Formulating the policy that perfect guarantee user participates in peak regulation, is the key that exploitation high energy user participates in the potentiality of peak regulation.By this section, user is participated in the research of peak regulation policy simulation, obtain the policy mix that following guarantee user participates in peak regulation.
3.1) implement high energy user preferential electricity price, encourage user power utilization, improve system loading level, contribute to realizing Gansu wind-powered electricity generation on-site elimination.
3.2) implement high energy user to avoid the peak hour time-of-use tariffs, encourage to have the high energy user of load peak modulation capacity to avoid the peak hour operations, raising system wind electricity digestion capability.
3.3) pay close attention to high energy industry market situation, in conjunction with the breach situation of peak after large-scale wind power access, adjustment high energy user participates in the compensation rate of peak regulation, makes reimbursement for expenses can cover the loss of the high energy user caused due to participation peak regulation.
3.4) explore interruptible load Demand-side auction market compensation mechanism, set up Demand-side assisted hatching that is open, fair, competition.
4, peak regulation administrative skill standard
4.1) subject content and the scope of application
Standard defines term, the technical requirement that user participates in peak regulation power load control system.
Standard is applicable to the power load control system of private radio, wireless public network (GSM/GPRS, CDMA etc.), telephone wire, wire cable, optical fiber and other transmission modes.
4.2) reference to standard
Power load management system functional specification
Power load management system data transmission protocol-2004
Power load management system general technical specifications (trying)
Energy Management Contract technology general rule
4.3) term
4.3.1) electric power load control Load control
To the technical measures that the power load of user controls.Can referred to as spatial load forecasting.
4.3.2) audio frequency electric power load control Ripple control
Utilize high and low pressure distribution wire transmission of audio control signal, realize the technology of electric power load control.
4.3.3) radio electric power load control Radio load control
Utilize radio channel transmission control signal, realize the technology of electric power load control, also claim radio spatial load forecasting.
4.3.4) distribution line carrier electric power load control Distribution line carrier load control
Utilize power distribution network to transmit carrier control signal, realize the technology of electric power load control.Signal frequency is generally more than 3kHz.
4.3.5) blended electric power spatial load forecasting Hybrid load control system
Utilize the power load control system that two or more control mode forms.
4.3.6) electric power load control center Load control centre
The station of monitoring and controlling can be carried out each load control terminal, also claim master station.
4.3.7) power load control terminal Load control terminal unit
Be installed in user side, by the equipment of the monitoring and controlling of electric power the center of load control, also claim controlled terminal.
4.3.8) unidirectional terminal One-way terminal unit
The power load control terminal of electric power load control central command can only be received.Be divided into teleswitch and remote control batcher two kinds.
4.3.9) teleswitch Remote switch
Receive the guidance command at electric power load control center, carry out the unidirectional terminal of the separating brake of on-load switch, closing operation.
4.3.10) remote control batcher Remote load control limiter
Receive the unidirectional terminal of electric power load control center definite value and guidance command.
4.3.11) bidirectional terminal Two-way terminal unit
Be installed in user side, can bidirectional data transfers carried out with electric power load control center and realize the equipment of local controlling functions.
4.3.12) time sharing electrical energy Time of use electrical energy
By the electric flux that the peak of load curve, paddy, at ordinary times section add up respectively.
4.3.13) power definite value Power setting
In power control time, allow the peak power setting valve that user uses.
4.3.14) electric flux definite value Electrical energy setting
Within the official hour cycle (as day, the moon), allow the electric flux setting valve that user uses.
4.3.15) remote control accuracy Correct rate of control
After remote control accuracy refers to that main website sends guidance command, the accuracy of terminal output relay action.
4.3.16) power definite value closed-loop control Closed-loop control for power
Main website issues the parameters such as client's power definite value to terminal, terminal monitors client's electricity consumption realtime power continuously, when realtime power exceedes power definite value, terminal is automatically by setting round and controlling client corresponding panel switches tripping operation time delay successively, and this control procedure is referred to as power control.
4.3.17) electric flux definite value closed-loop control Closed-loop control for electric energy
Main website issues the parameters such as client's electric flux definite value to terminal, terminal monitoring power user consumption, and when power consumption exceedes alarm electric flux definite value, terminal automatically sends alarm signal and notifies client; The corresponding panel switches tripping operation of client is controlled when power consumption exceedes electric flux definite value.This control procedure is referred to as automatically controlled.
4.4) technical requirement
4.4.1) peak regulation user condition is participated in
(1) part throttle characteristics
Adjustable or the interruptible price of user power utilization load.Under the condition that operating mode allows, load can according to the adjustment of system running environment appropriateness.Major equipment interruptible price runs a period of time, can make interruptible load response after scheduling portion sends interrupt instruction fast.
(2) response time
After receiving dispatch command, response can be made within 30 minutes.
(3) electric pressure and voltage regulating mode
House transformer low-pressure side voltage is more than or equal to 10kV, and low-pressure side installs reactive power compensator.
(4) transformer capacity
More than transformer capacity 1000kVA, the overload capacity of 30%, can on-load voltage regulation.
(5) electric energy meter
Time-sharing ammeter is installed.
(6) communication modes
At least two kinds of communication apparatus such as private radio, wireless public network (GSM/GPRS, CDMA etc.), telephone wire, wire cable, optical fiber are installed.
(7) load control terminal
Load control terminal is installed, a scheduling distant place can be realized and control or control on the spot according to dispatch command.
4.4.2) interruptible load contract standard
Interruptible load contract should follow legal provisions such as " contract law of the People's Republic of China ", meets " Energy Management Contract technology general rule " (GB/T-24915-2010) text specification.Should including but not limited to following content in interruptible load contract:
1. the contract life; 2. advance notification times; 3. duration of interruption; 4. load rejection capacity; 5. interruption times is allowed; 6. reimbursement for expenses etc.
4.4.3) System's composition
System is by clean energy resource Generation Control terminal, and dispatching center, the center of load control, customer charge control terminal forms, and system basic architecture is as Figure 11.
4.4.4) main control computer function
(1) load controlling function
A) timing automatic or manual transmitting system, subregion, multicasting order, carry out breaker tripping and closing operation;
B) transmission power control, the input that electric flux controls and releasing order;
C) setting of peak, paddy day part and adjustment;
D) in groups or the power of single terminal, power control time, the setting of electric flux definite value and adjustment;
E) switching of time-shared charge electric energy table;
F) during system pair;
G) electric energy meter reading freeze command is sent;
H) timing and random long distance meter reading.
(2) data processing function
A) data reasonalbeness check;
B) computing function;
C) picture data refreshes automatically;
D) abnormal, out-of-limit or accident alarm;
E) operator password password checking, the inspection of confirmation and various operational order, confirms and print record;
F) real-time load curve (comprising day, the moon and special user) is drawn, chart display and copy;
G) random challenge.
(3) system autodiagnosis self-recovering function
A) main control computer two-shipper automatic/hand switches;
B) display alarm of system software operation exception, has automatic or manual self-recovering function;
C) alarm of master station communication equipment long hair and protection, channel switches instruction;
D) duty that whole system hardware comprises channel should be able to be demonstrated.
(4) communication function
A) information is exchanged with power-management centre;
B) information is exchanged with superior load control center or planned supply and use of electric power administrative authority;
And computer network communication c);
D) data are exchanged with Electric Power Marketing System;
E) data are provided to Electric Power Customer Service System.
(5) application function
A) dsm and service support;
B) Electric Power Marketing Management technical support;
C) marketing analyses and decision analysis support.
(6) system cloud gray model management
A) terminal management;
B) telecommunication management;
C) operation conditions monitoring;
D) System inventory.
(7) other functions
A) debugging time and terminal call function;
B) electrical equipment various in power distribution network is divided, closing operation and function for monitoring.
4.4.5) load control terminal function
The necessary functions of terminal and optional function configuration are in table 1
table 1: the necessary functions of terminal and optional function configuration
4.4.6) clean energy resource generating termination function
(1) data acquisition and procession
Terminal system should provide and participate in controlling and the related data information passage of malfunction monitoring and processing capacity, such as: wind speed, wind direction, wind speed round, generator speed, position, cabin, turn round and pull angle, propeller pitch angle, hydraulic system pressure, vibration, temperature memory electrical data etc.
(2) data monitoring
Terminal system can gather or generate following data message, and terminal system man-machine interface or central monitoring system can show, browse following data:
A) wind speed, wind direction, wind speed round, position, cabin, turn round and pull angle, propeller pitch angle;
B) unit current state;
C) hydraulic system pressure, cabin vibrations, cabin temperature, generator-temperature detection, gearbox temperature etc.;
D) three-phase voltage, three-phase current, meritorious, idle, power factor, frequency, generated energy etc.
(3) malfunction monitoring
Unit controlled device subdivision is monitored, according to corresponding units sensor collection capacity, physical quantity information after watchdog function process, form some status codes that can reflect this location mode, status code should accomplish failure message accurate positioning, false action-proof, maintenance simply, and user should be able to by man-machine interface or long distance control system are enabled and forbidden the monitoring of any one status code on the spot according to operating right.When wherein any one state activates, terminal system according to status code attribute, should be able to accurately make response alarm or shutdown operation.
(4) maximal power tracing
Wind turbines is when wind rating once runs, can not generate electricity at full capacity, terminal system should be able to coordinate pitch-controlled system, current transformer work according to self core control strategy, make wind speed round follow the tracks of optimum tip-speed ratio all the time to run, wind speed-powertrace and optimal curve are consistent, and obtain maximum wind energy.In whole control procedure, violent shake should be avoided, make cabin, the load of pylon and driving-chain, vibration should not exceed the scope that unit allows.
(5) output-constant operation controls
More than the wind rating of Wind turbines, when cut-out wind speed once runs, terminal system should be able to cooperation control pitch-controlled system, current transformer work, unit output-power fluctuation scope should not exceed 10% of rated power.In whole control procedure, violent shake should be avoided, make cabin, the load of pylon and driving-chain, vibration should not exceed the scope that unit allows.
(6) driftage controls
Priority: manually driftage is greater than the automatic driftage that wind direction controls; All driftage operations should be carried out in the wind speed range allowed, and exceed wind speed limit value (0.8*Vref, with reference to wind speed), should forbid that all driftages operate.
(7) low voltage crossing
Terminal system should be able to coordinate pitch-controlled system, current transformer meets the requirement of electrical network to wind energy turbine set low voltage crossing, should be able to ensure that unit is not shut down, not exceed the speed limit, not off-grid during low voltage crossing.
(8) active power regulation
Terminal system should be able to control pitch-controlled system, the active power regulation of current transformer realization to unit, and can regulate in the mode that active power is given unit, set-point is not more than current unit maximum power output value.
(9) reactive power regulates
Terminal system should be able to control current transformer and complete and regulate the reactive power of unit, can regulate the mode that unit is given with reactive power or power factor is given.
(10) communicating requirement
A) communicate with current transformer, pitch-controlled system
B) communicate with central monitoring system
C) communicate with master control system
(11) failure message record
Terminal system should be able to be no less than the critical failure information of the nearest generation that 128 are specified at local controller memory block record automatically, and retention time is not less than 6 months, and resolving accuracy at least reaches 5ms, so that the reproduction of fault and analysis afterwards.
In sum, the invention has the beneficial effects as follows, the assistant service policy simulation model of generation of electricity by new energy peak regulation is participated in by setting up user, accompanying policy high energy enterprise customer being participated in peak regulation emulates, thus for being raising power industry energy use efficiency, economize energy, reduces environmental pollution, promote the energy and electric power structural adjustment, guarantee power system security, Effec-tive Function provides strong technical support.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a user participates in the assistant service policy simulation model of generation of electricity by new energy peak regulation, it is characterized in that, comprise the system dynamics model, system dynamics simulation model, the policy mix model of guarantee user and peak regulation and the peak regulation administrative skill master pattern that are equipped with successively.
2. user according to claim 1 participates in the assistant service policy simulation model of generation of electricity by new energy peak regulation, it is characterized in that, described system dynamics model, for the assistant service policy simulation using the user of system dynamics and method establishment to participate in peak regulation; And/or,
Described system dynamics simulation model, emulates for the assistant service policy simulation model using user to participate in generation of electricity by new energy peak regulation; And/or,
The policy mix model of described guarantee user and peak regulation, the assistant service policies and measures participating in peak regulation for providing user; And/or,
Described peak regulation administrative skill master pattern, for providing an administrative standard for peak regulation management, is convenient to peak regulation management and decision.
3. user according to claim 2 participates in the assistant service policy simulation model of generation of electricity by new energy peak regulation, it is characterized in that, described system dynamics model, uses the user of system dynamics and method establishment to participate in the operation of the assistant service policy simulation of peak regulation, specifically comprises:
The wind-powered electricity generation investor compares H according to the revenue and cost of expection
0, determine the Investment Trend of following wind-powered electricity generation; When the revenue and cost ratio of reality is greater than expection, strengthen dynamics of investment, wind-powered electricity generation capacity increases thereupon, otherwise then reduces investment; Wind-powered electricity generation investment, as capital concentrated industry, should be taken measures in investment process, avoid high demand for investment to cause the wasting of resources; The wind-powered electricity generation capacity equation of motion can be expressed as:
W is wind-powered electricity generation capacity, and Section 1 is proportional, and α is scale-up factor, and wind-powered electricity generation capacity is according to the proportional change of difference of actual desired revenue and cost ratio; Section 2 is differential term, and K is differential coefficient;
Wind-powered electricity generation investment revenue and cost ratio:
B
W＝P
WQ
W-C
C(1-3)；
C
W＝WI (1-4)；
B
w, C
wrepresent the revenue and costs of wind-powered electricity generation investment respectively, P
w, Q
wbe respectively wind-powered electricity generation rate for incorporation into the power network and electricity, C
cfor peak regulation cost of compensation.
ΔH＝H-H
0(1-5)；
H
0use C
wtable function represent, the investor of rationality can be desirably in cost of investment when increasing, and revenue and cost ratio can increase to some extent, at least should remain unchanged;
The unit capacity cost I table function of W represents; Reimbursement for expenses: in order to encourage high energy enterprise participation peak regulation, the reimbursement for expenses of its necessity need be paid;
C
C＝R·M (1-6)；
R, M are respectively rate and the peak regulation effect of peak regulation compensation;
Compensate the rate equation of motion: compensate rate and determined by the supplydemand relationship of peak, when supply falls short of demand, rate goes up, and vice versa;
Section 1 is proportional component, and β is scale-up factor, compensates rate and adjusts according to peak vacancy ratio; Section 2 is differentiation element, and K is differential coefficient;
M
d＝W (1-8)；
M
0＝M
T+M
H+M (1-9)；
ΔM＝M
d-M
0(1-10)；
M
0, M
dbe respectively the supply and demand of peak, peak demand equals wind-powered electricity generation capacity, supplies by fired power generating unit peak M
t, hydroelectric peak capacity M
hand high energy peak M forms, Δ M is peak vacancy, and when peak has vacancy, generation vacancy online generating can not be abandoned wind by wind-powered electricity generation, and generated energy will reduce, and η is wind energy turbine set availability;
The high energy enterprise peak equation of motion: high energy enterprise expects using profit when not participating in peak regulation as profit, when participating in peak regulation profit and being greater than expected profit, peak is controlled, namely according to the adjustment of profit increment rate direction, to obtaining larger profit according to the increase trend of profit; When participating in peak regulation and making profit be less than expected profit, rapid adjustment peak is to 0;
B
0＝T
0·(P-C
I0) (1-13)；
B＝T·(P-C
I) (1-14)；
ΔB＝B-B
0(1-15)；
ΔB＝B-B
0(1-16)；
γ, K are respectively adjustment factor, B, B
0be respectively profit and the profit expection of high energy enterprise, T, P are respectively output and product price; C
ifor unit cost, along with the increase of high energy peak, the interruptible load time increases, and thermal loss increases thereupon, and unit cost exponentially increases, and is expressed as the table function of peak M;
Output T also represents with the table function of peak, and along with the increase of peak, enterprise's production time and efficiency all can reduce, and output decreases.
4. user according to claim 2 participates in the assistant service policy simulation model of generation of electricity by new energy peak regulation, it is characterized in that, described system dynamics simulation model, the assistant service policy simulation model using user to participate in generation of electricity by new energy peak regulation carries out the operation emulated, and specifically comprises:
Vensim system dynamics simulation software is used to simulate above-mentioned model;
Utilize the model built, participate in peak-load regulating to high energy power consumer, the policy of wind-powered electricity generation of dissolving carries out system dynamics emulation, the susceptibility that the policy that simultaneously analyzes is sent outside one's respective area electricity and high energy product price changes;
Further electric power to be sent outside and the susceptibility of metallurgic product price to policy is analyzed.
5. user according to claim 2 participates in the assistant service policy simulation model of generation of electricity by new energy peak regulation, it is characterized in that, the policy mix model of described guarantee user and peak regulation, the operation of the assistant service policies and measures providing user to participate in peak regulation, specifically comprises:
3.1) implement high energy user preferential electricity price, encourage user power utilization, improve system loading level, contribute to realizing Gansu wind-powered electricity generation on-site elimination;
3.2) implement high energy user to avoid the peak hour time-of-use tariffs, encourage to have the high energy user of load peak modulation capacity to avoid the peak hour operations, raising system wind electricity digestion capability;
3.3) pay close attention to high energy industry market situation, in conjunction with the breach situation of peak after large-scale wind power access, adjustment high energy user participates in the compensation rate of peak regulation, makes reimbursement for expenses can cover the loss of the high energy user caused due to participation peak regulation;
3.4) explore interruptible load Demand-side auction market compensation mechanism, set up Demand-side assisted hatching that is open, fair, competition.
6. user according to claim 2 participates in the assistant service policy simulation model of generation of electricity by new energy peak regulation, it is characterized in that, described peak regulation administrative skill master pattern, for peak regulation management provides an administrative standard, be convenient to the operation of peak regulation management and decision, specifically comprise:
4.1) setting of subject content and the scope of application;
4.2) setting of reference to standard;
4.3) setting of term;
4.4) setting of technical requirement.
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| CN109447422A (en) * | 2018-10-08 | 2019-03-08 | 北京百分点信息科技有限公司 | A kind of policy simulation system and method based on system dynamics model |
| CN110880756A (en) * | 2019-11-19 | 2020-03-13 | 国网浙江省电力有限公司 | Method for judging peak regulation capacity adequacy of extra-high voltage receiving-end power grid based on peak regulation coefficient |
| CN113779808A (en) * | 2021-09-24 | 2021-12-10 | 杭州博晟科技有限公司 | Big data based policy simulation analysis method and system |
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