CN109711862A - A kind of new energy power plant is grid-connected to be led to ancillary service cost methodology - Google Patents
A kind of new energy power plant is grid-connected to be led to ancillary service cost methodology Download PDFInfo
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Abstract
The present invention relates to generation of electricity by new energy and its interconnection technology field, in particular under a kind of Power Market, new energy power plant is grid-connected is led to ancillary service cost methodology.This method is led to the mechanism of peak regulation, frequency modulation and spinning reserve service for power system according to new energy power generation grid-connection, establish that network load low-valley interval, usual period, peak period new energy power plant are grid-connected is led to ancillary service cost floor area sharing, the grid-connected mode and step for being led to that ancillary service cost is shared of apparent power grid difference run the period new energy power plant will provide technical basis for the formulation of the grid-connected dynamic price of new energy power plant under Power Market.
Description
Technical field
The invention belongs to generation of electricity by new energy and its interconnection technology field, in particular to new energy under a kind of Power Market
The grid-connected ancillary service cost methodology of power plant.
Background technique
Though extensive development includes that have become reply current increasingly serious for the new energy power generation technologies such as wind-powered electricity generation and photovoltaic power generation
Fossil resource exhaustion and problem of environmental pollution main means, but the randomness of its grid-connected power output and fluctuation access it and are
The adverse effect of system safe and stable operation gradually shows.To realize that generation of electricity by new energy priority scheduling requires and guarantee new energy
The safe and stable operation of electricity generation grid-connecting system, the largely ancillary services such as peak regulation, frequency modulation, spinning reserve need to be configured urgently.When
Before, China's power grid ancillary service adheres to that " scheduling on demand is based on cost recovery, the reimbursement for expenses fired power generating unit in system in proportion
Between share ".Not only unapparent ancillary service is led to reason to the ancillary service management method that China's power grid is carried out at this stage, violates auxiliary
The principle of service " who is led to that who undertakes " is helped, but also is unfavorable for other generating sets of excitation system including fired power generating unit
Or power plant provides the enthusiasm of ancillary service.
Share mechanism with the ancillary service cost that focus of attention generation of electricity by new energy is led to although having part expert at this stage
Formulation, propose the ancillary service costs methodologies such as a series of related peak regulation, frequency modulation, spinning reserves, but mentioned method is equal
Not yet explicitly it is related to being led to the grid-connected concrete mode and step for being led to that ancillary service cost is shared of new energy power plant under the conditions of mechanism is apparent
Suddenly.For example, (Hu Junfeng wind power integration is led to power grid ancillary service cost sharing mechanism and the model research North China [D] to document [1]
Electric power university, 2014.) on the basis of analyzing wind power output fluctuation characteristic, using Cooperative Game Theory means discussion wind power plant
Be led to ancillary service cost methodology, but the unapparent wind-powered electricity generation of this method be led to ancillary service with its undertake ancillary service cost it
Between incidence relation；Document [2] (Wen Jingyu, Yang Jianhua, wait a kind of based on peak regulation ancillary service compensation wind-powered electricity generation Power tariff
Evaluation method: CN, CNIO6972532A [P] .2017.) based on hydroenergy storage station, fired power generating unit depth peak regulation and conventional machine
Group start and stop participate in wind power integration peak-load regulating mode, propose it is a kind of based on peak regulation ancillary service compensation wind-powered electricity generation Power tariff estimate
Calculation method, but this method is related to wind power plant and is led to sharing for peak regulation ancillary service reimbursement for expenses；Document [3] (He Yang, Hu Junfeng,
Yan Zhitao waits large-scale wind power networking ancillary service cost compensation mechanism to study [J] electric power network technique, 2013,37 (12):
3552-3557.) from electricity market angle, proposes several wind power integrations and be led to that ancillary service cost is shared and compensatory michanism, but
Also it is not directed to the specific methodology that wind power plant is led to peak regulation ancillary service reimbursement for expenses.
To sum up, the present invention proposes under a kind of Power Market that new energy power plant is grid-connected and is led to ancillary service cost contributing parties
Method, this method are led to the mechanism of peak regulation, frequency modulation and spinning reserve service for power system according to new energy power generation grid-connection, establish network load
Low-valley interval, usual period, peak period new energy power plant are grid-connected to be led to that ancillary service cost floor area sharing, apparent power grid are different
The grid-connected mode and step for being led to that ancillary service cost is shared of run the period new energy power plant will be new energy under Power Market
The formulation of the grid-connected dynamic price of source power plant provides technical basis.
Summary of the invention
At this stage China's power grid carry out " scheduling on demand is based on cost recovery, the reimbursement for expenses thermoelectricity in system in proportion
Share between unit " ancillary service management method not only unapparent ancillary service is led to reason, violating ancillary service, " whom who is led to
Undertake " principle, but also be unfavorable for other generating sets including fired power generating unit of excitation system or power plant provides auxiliary
The enthusiasm of service.For this purpose, the present invention is led to the machine of peak regulation, frequency modulation and spinning reserve service for power system according to new energy power generation grid-connection
Reason proposes under a kind of Power Market that new energy power plant is grid-connected and is led to ancillary service cost methodology, establishes network load
Low-valley interval, usual period, peak period new energy power plant are grid-connected is led to ancillary service cost floor area sharing, not only apparent power grid
The grid-connected mode and step for being led to that ancillary service cost is shared of different run the period new energy power plant will also be Power Market
The formulation of the grid-connected dynamic price of lower new energy power plant provides technical basis.Particular content is as follows:
(1) network load low-valley interval new energy power plant described in is grid-connected to be led to that ancillary service cost is shared (with grid-connected fortune
For i-th capable of new energy power plant) as follows:
fdg,i=fdg,pR,i+fdg,fR,i+fdg,sR,i
In formula, fdg,iIt is led to that auxiliary expenses shares result for the load low-valley interval new energy power plant is grid-connected；fdg,pR,i、
fdg,fR,iWith fdg,sR,iThe respectively grid-connected peak regulation being led to of the period new energy power plant, frequency modulation and spinning reserve service for power system expense
With sharing result.Wherein, the grid-connected peak regulation ancillary service cost being led to of the new energy power plant is shared are as follows:
In formula, IdgIt is load low-valley interval using Δ t as the time interval in period sum；fdg,pR,i(t) load valley is indicated
T-th of grid-connected peak regulation ancillary service cost being led to of the Δ t period new energy power plant of period, as follows:
In formula, pdg,i(t) for t-th the Δ t period the grid-connected power output of new energy power plant；Pdg,pR,1、Pdg,pR,2With Pdg,pR,3Point
Not for peak regulation ancillary service by energy-storage system, fired power generating unit depth peak regulation, conventional power unit start and stop provide when peak regulation ancillary service
Price combines formulation with government organs by grid company；pdg,i,1,rg(t) and pdg,i,2,rgIt (t) is respectively t-th of Δ t period
The new energy power plant is auxiliary by the peak regulation provided by energy-storage system and fired power generating unit depth peak regulation that installed capacity ought to use with compensation
Service capacity is helped, are as follows:
In formula, the new energy power plant being incorporated into the power networks in N expression system is total；chIndicate h-th of new energy being incorporated into the power networks
Power plant unit capacity；pdg,1,rg(t) and pdg,2,rgIt (t) is respectively that the peak regulation that energy-storage system provides in t-th of Δ t periodic system holds
The peak capacity that amount is provided with fired power generating unit depth peak regulation.
The grid-connected frequency modulation ancillary service cost being led to of the new energy power plant shares fdg,fR,iAre as follows:
In formula, fdg,fR,i(t) t-th of grid-connected frequency modulation being led to of the Δ t period new energy power plant of load valley period is indicated
Ancillary service cost, as follows:
In formula, pdg,i,Δt(t) and pdg,Δt(t) it is respectively i-th of grid-connected power output of new energy power plant in t-th of Δ t period
Undulate quantity and new energy power plant grid-connection comprehensive power output undulate quantity；Adj () is the grid-connected fluctuation out of i-th of new energy power plant
Direction and new energy power plant grid-connection comprehensive go out fluctuation orientation consistency decision function, and value is that both 0 expressions fluctuate direction not
Unanimously, otherwise indicate that the two fluctuation direction is consistent；GdgIt represents fluctuation direction and new energy power plant grid-connection comprehensive goes out fluctuation
Consistent new energy power plant set；Pdg,ΔtIndicate the frequency modulation ancillary service valence that load valley period new energy power generation grid-connection is led to
Lattice combine formulation with government department by grid company.
The grid-connected spinning reserve service for power system expense allocation f being led to of the new energy power plantdg,sR,iAre as follows:
In formula, fdg,sRIt indicates that load valley period new energy power plant is grid-connected and is led to spinning reserve service for power system total cost；
σdg,iWith kdg,iFor the standard deviation of the grid-connected power output prediction deviation of i-th of new energy power plant of load low-valley interval, and share the period
New energy power generation grid-connection is led to the coefficient of spinning reserve service for power system expense, as follows:
In formula, σdg,lFor the standard deviation of the load prediction deviation of load low-valley interval.
(2) the network load usual period, j-th of new energy power plant is grid-connected to be led to that ancillary service cost is shared are as follows:
fpc,j=fpc,fR,j+fpc,sR,j
In formula, fpc,jIt is led to that auxiliary expenses shares result for the load usual period new energy power plant is grid-connected；fpc,fR,jWith
fpc,sR,jThe respectively grid-connected frequency modulation being led to of the period new energy power plant and spinning reserve service for power system expense allocation result.Its
In, the grid-connected frequency modulation ancillary service cost f being led to of the new energy power plantpc,fR,jAre as follows:
In formula, IpcIt is the load usual period with the time interval number in Δ t period；fpc,fR,j(t) when indicating that load is usual
T-th of grid-connected frequency modulation ancillary service cost being led to of the Δ t period new energy power plant of section, as follows:
In formula, ppc,j,Δt(t) and ppc,ΔtIt (t) is respectively the grid-connected Reeb out of j-th of new energy power plant in t-th of Δ t period
Momentum and new energy power plant grid-connection comprehensive power output undulate quantity；Gpc(t) it indicates to go out fluctuation direction and new energy in t-th of Δ t period
Source power plant grid-connection comprehensive goes out the consistent new energy power plant set in fluctuation direction；Ppc,ΔtIndicate the usual period new energy hair of load
The grid-connected frequency modulation ancillary service price being led to of electricity, is formulated by grid company and government's part combination.
The grid-connected spinning reserve service for power system expense allocation f being led to of the new energy power plantpc,sR,j:
In formula, fpc,sRIndicate the spinning reserve service for power system total cost that the usual period new energy power generation grid-connection of load is led to；M
For the usual period new energy power generation grid-connection number of load；σpc,jWith kpc,jRespectively the load usual period j-th of new energy power plant simultaneously
It nets power output prediction deviation standard deviation and its shares the period spinning reserve service for power system cost coefficient, as follows:
In formula, σpc,lLoad prediction deviation standard for the load usual period is poor.
(3) the load peak period, k-th of new energy power plant is grid-connected to be led to that ancillary service cost is shared are as follows:
fgf,k=fgf,pR,k+fgf,fR,k+fgf,sR,k
In formula, fgf,kIt is led to that auxiliary expenses shares result for the load peak period new energy power plant is grid-connected；fgf,pR,k、
fgf,fR,kWith fgf,sR,kThe respectively grid-connected peak regulation being led to of the period new energy power plant, frequency modulation and spinning reserve service for power system expense
With sharing result.Wherein, the grid-connected peak regulation ancillary service cost being led to of k-th of new energy power plant shares fgf,pR,k:
In formula, IgfIt is load peak period using Δ t as the time interval number in period；fgf,pR,k(t) k-th of Δ t is indicated
The grid-connected peak regulation ancillary service cost being led to of the period new energy power plant, as follows:
In formula, pgf,k(t) for t-th the Δ t period the grid-connected power output of new energy power plant；Pgf,pR,1、Pgf,pR,2With Pgf,pR,3Point
Peak regulation ancillary service price when not provided for peak regulation ancillary service by energy-storage system, flexible load, conventional power unit start and stop, by electricity
Net company, government organs and user side negotiate to formulate；pgf,k,1,rg(t) and pgf,k,2,rg(t) being respectively t-th of Δ t period should
The peak regulation ancillary service capacity provided by energy-storage system and flexible load that new energy power plant ought to be used with compensation by installed capacity,
It is respectively as follows:
In formula, W indicates the new energy power plant total number being incorporated into the power networks in load peak period system；pgf,1,rg(t) with
pgf,2,rg(t) it is respectively peak capacity that t-th of Δ t period energy-storage system and flexible load provide.
The grid-connected frequency modulation ancillary service cost being led to of the new energy power plant shares fgf,fR,kAre as follows:
In formula, fgf,fR,k(t) t-th of grid-connected frequency modulation being led to of the Δ t period new energy power plant of load peak period is indicated
Ancillary service cost, as follows:
In formula, pgf,k,Δt(t) and pgf,ΔtIt (t) is respectively the grid-connected Reeb out of k-th of new energy power plant in t-th of Δ t period
Momentum and new energy power plant grid-connection comprehensive power output undulate quantity；GgfIt represents fluctuation direction and new energy power plant grid-connection comprehensive is contributed
Fluctuate consistent new energy power plant set；Pgf,ΔtIndicate the frequency modulation auxiliary clothes that load peak period new energy power generation grid-connection is led to
Business price, combines formulation with government department by grid company.
The grid-connected spinning reserve service for power system expense allocation f being led to of the new energy power plantgf,sR,kAre as follows:
In formula, fdg,sRIndicate the grid-connected spinning reserve service for power system total cost being led to of load peak period new energy power plant；
σgf,kWith kgf,kFor the grid-connected power output prediction deviation standard deviation of k-th of new energy power plant of load peak period and its to share the period new
Energy electricity generation grid-connecting is led to spinning reserve service for power system cost coefficient, as follows:
In formula, σgf,lIt is poor for the load prediction deviation standard of load peak period.
Detailed description of the invention
Fig. 1, which is that load valley period new energy power plant of the present invention is grid-connected, is led to that ancillary service cost shares process.
Fig. 2, which is that load of the present invention usual period new energy power plant is grid-connected, is led to that ancillary service cost shares process.
Fig. 3, which is that load peak period new energy power plant of the present invention is grid-connected, is led to that ancillary service cost shares process.
Specific embodiment
Illustrate specific implementation step of the invention with reference to the accompanying drawing.
The present invention is led to the mechanism of peak regulation, frequency modulation and spinning reserve service for power system according to new energy power generation grid-connection, proposes one
New energy power plant is grid-connected under kind of Power Market is led to ancillary service cost methodology, establish network load low-valley interval,
Usual period, peak period new energy power plant is grid-connected to be led to ancillary service cost floor area sharing (network load low-valley interval and height
Peak period new energy power plant is grid-connected be led to ancillary service cost share share including peak regulation ancillary service cost, frequency modulation ancillary service
Expense allocation and spinning reserve service for power system expense allocation, network load usual period new energy power plant is grid-connected to be led to auxiliary clothes
Business expense allocation includes that frequency modulation ancillary service cost is shared and spinning reserve service for power system expense allocation), apparent power grid difference fortune
The grid-connected mode and step for being led to that ancillary service cost is shared of row period new energy power plant will be also new energy under Power Market
The formulation of the grid-connected dynamic price of source power plant provides technical basis.
Network load low-valley interval new energy power plant is grid-connected to be led to that ancillary service cost is shared including peak regulation ancillary service expense
With share, frequency modulation ancillary service cost is shared and spinning reserve service for power system expense allocation, grid-connected with i-th of new energy power plant
For being led to that ancillary service cost is shared, are as follows:
fdg,i=fdg,pR,i+fdg,fR,i+fdg,sR,i
In formula, fdg,iIt is led to that auxiliary expenses shares result for the load low-valley interval new energy power plant is grid-connected；fdg,pR,i、
fdg,fR,iWith fdg,sR,iThe respectively grid-connected peak regulation being led to of the period new energy power plant, frequency modulation and spinning reserve service for power system expense
With sharing result.
The grid-connected peak regulation ancillary service cost being led to of the new energy power plant is shared are as follows:
In formula, IdgIt is load low-valley interval using Δ t as the time interval in period sum；fdg,pR,i(t) load valley is indicated
T-th of grid-connected peak regulation ancillary service cost being led to of the Δ t period new energy power plant of period, as follows:
In formula, pdg,i(t) for t-th the Δ t period the grid-connected power output of new energy power plant；Pdg,pR,1、Pdg,pR,2With Pdg,pR,3Point
Not for peak regulation ancillary service by energy-storage system, fired power generating unit depth peak regulation, conventional power unit start and stop provide when peak regulation ancillary service
Price combines formulation with government organs by grid company；pdg,i,1,rg(t) and pdg,i,2,rgIt (t) is respectively t-th of Δ t period
The new energy power plant is auxiliary by the peak regulation provided by energy-storage system and fired power generating unit depth peak regulation that installed capacity ought to use with compensation
Service capacity is helped, are as follows:
In formula, the new energy power plant being incorporated into the power networks in N expression system is total；chIndicate h-th of new energy being incorporated into the power networks
Power plant unit capacity；pdg,1,rg(t) and pdg,2,rgIt (t) is respectively that the peak regulation that energy-storage system provides in t-th of Δ t periodic system holds
The peak capacity that amount is provided with fired power generating unit depth peak regulation.
The grid-connected frequency modulation ancillary service cost being led to of the new energy power plant shares fdg,fR,iAre as follows:
In formula, fdg,fR,i(t) t-th of grid-connected frequency modulation being led to of the Δ t period new energy power plant of load valley period is indicated
Ancillary service cost, as follows:
In formula, pdg,i,Δt(t) and pdg,Δt(t) it is respectively i-th of grid-connected power output of new energy power plant in t-th of Δ t period
Undulate quantity and new energy power plant grid-connection comprehensive power output undulate quantity；Adj () is the grid-connected fluctuation out of i-th of new energy power plant
Direction and new energy power plant grid-connection comprehensive go out fluctuation orientation consistency decision function, and value is that both 0 expressions fluctuate direction not
Unanimously, otherwise indicate that the two fluctuation direction is consistent；GdgIt represents fluctuation direction and new energy power plant grid-connection comprehensive goes out fluctuation
Consistent new energy power plant set；Pdg,ΔtIndicate the frequency modulation ancillary service valence that load valley period new energy power generation grid-connection is led to
Lattice combine formulation with government department by grid company.
The grid-connected spinning reserve service for power system expense allocation f being led to of the new energy power plantdg,sR,iAre as follows:
In formula, fdg,sRIt indicates that load valley period new energy power plant is grid-connected and is led to spinning reserve service for power system total cost；
σdg,iWith kdg,iFor the standard deviation of the grid-connected power output prediction deviation of i-th of new energy power plant of load low-valley interval, and share the period
New energy power generation grid-connection is led to the coefficient of spinning reserve service for power system expense, as follows:
In formula, σdg,lFor the standard deviation of the load prediction deviation of load low-valley interval.
Network load usual period new energy power plant is grid-connected to be led to that ancillary service cost is shared only including frequency modulation ancillary service
Expense allocation and spinning reserve service for power system expense allocation, are led to that ancillary service cost is shared so that j-th of new energy power plant is grid-connected
For, are as follows:
fpc,j=fpc,fR,j+fpc,sR,j
In formula, fpc,jIt is led to that auxiliary expenses shares result for the load usual period new energy power plant is grid-connected；fpc,fR,jWith
fpc,sR,jThe respectively grid-connected frequency modulation being led to of the period new energy power plant and spinning reserve service for power system expense allocation result.Its
In, the grid-connected frequency modulation ancillary service cost f being led to of the new energy power plantpc,fR,jAre as follows:
In formula, IpcIt is the load usual period with the time interval number in Δ t period；fpc,fR,j(t) when indicating that load is usual
T-th of grid-connected frequency modulation ancillary service cost being led to of the Δ t period new energy power plant of section, as follows:
In formula, ppc,j,Δt(t) and ppc,ΔtIt (t) is respectively the grid-connected Reeb out of j-th of new energy power plant in t-th of Δ t period
Momentum and new energy power plant grid-connection comprehensive power output undulate quantity；Gpc(t) it indicates to go out fluctuation direction and new energy in t-th of Δ t period
Source power plant grid-connection comprehensive goes out the consistent new energy power plant set in fluctuation direction；Ppc,ΔtIndicate the usual period new energy hair of load
The grid-connected frequency modulation ancillary service price being led to of electricity, is formulated by grid company and government's part combination.
The grid-connected spinning reserve service for power system expense allocation f being led to of the new energy power plantpc,sR,j:
In formula, fpc,sRIndicate the spinning reserve service for power system total cost that the usual period new energy power generation grid-connection of load is led to；M
For the usual period new energy power generation grid-connection number of load；σpc,jWith kpc,jRespectively the load usual period j-th of new energy power plant simultaneously
It nets power output prediction deviation standard deviation and its shares the period spinning reserve service for power system cost coefficient, as follows:
In formula, σpc,lLoad prediction deviation standard for the load usual period is poor.
Network load peak period new energy power plant is grid-connected to be led to that ancillary service cost is shared including peak regulation ancillary service expense
With share, frequency modulation ancillary service cost is shared and spinning reserve service for power system expense allocation, grid-connected with i-th of new energy power plant
For being led to that ancillary service cost is shared, are as follows:
fgf,k=fgf,pR,k+fgf,fR,k+fgf,sR,k
In formula, fgf,kIt is led to that auxiliary expenses shares result for the load peak period new energy power plant is grid-connected；fgf,pR,k、
fgf,fR,kWith fgf,sR,kThe respectively grid-connected peak regulation being led to of the period new energy power plant, frequency modulation and spinning reserve service for power system expense
With sharing result.Wherein, the grid-connected peak regulation ancillary service cost being led to of k-th of new energy power plant shares fgf,pR,k:
In formula, IgfIt is load peak period using Δ t as the time interval number in period；fgf,pR,k(t) k-th of Δ t is indicated
The grid-connected peak regulation ancillary service cost being led to of the period new energy power plant, as follows:
In formula, pgf,k(t) for t-th the Δ t period the grid-connected power output of new energy power plant；Pgf,pR,1、Pgf,pR,2With Pgf,pR,3Point
Peak regulation ancillary service price when not provided for peak regulation ancillary service by energy-storage system, flexible load, conventional power unit start and stop, by electricity
Net company, government organs and user side negotiate to formulate；pgf,k,1,rg(t) and pgf,k,2,rg(t) being respectively t-th of Δ t period should
The peak regulation ancillary service capacity provided by energy-storage system and flexible load that new energy power plant ought to be used with compensation by installed capacity,
It is respectively as follows:
In formula, W indicates the new energy power plant total number being incorporated into the power networks in load peak period system；pgf,1,rg(t) with
pgf,2,rg(t) it is respectively peak capacity that t-th of Δ t period energy-storage system and flexible load provide.
The grid-connected frequency modulation ancillary service cost being led to of the new energy power plant shares fgf,fR,kAre as follows:
In formula, fgf,fR,k(t) t-th of grid-connected frequency modulation being led to of the Δ t period new energy power plant of load peak period is indicated
Ancillary service cost, as follows:
In formula, pgf,k,Δt(t) and pgf,ΔtIt (t) is respectively the grid-connected Reeb out of k-th of new energy power plant in t-th of Δ t period
Momentum and new energy power plant grid-connection comprehensive power output undulate quantity；GgfIt represents fluctuation direction and new energy power plant grid-connection comprehensive is contributed
Fluctuate consistent new energy power plant set；Pgf,ΔtIndicate the frequency modulation auxiliary clothes that load peak period new energy power generation grid-connection is led to
Business price, combines formulation with government department by grid company.
The grid-connected spinning reserve service for power system expense allocation f being led to of the new energy power plantgf,sR,kAre as follows:
In formula, fdg,sRIndicate the grid-connected spinning reserve service for power system total cost being led to of load peak period new energy power plant；
σgf,kWith kgf,kFor the grid-connected power output prediction deviation standard deviation of k-th of new energy power plant of load peak period and its to share the period new
Energy electricity generation grid-connecting is led to spinning reserve service for power system cost coefficient, as follows:
In formula, σgf,lIt is poor for the load prediction deviation standard of load peak period.
The foregoing is merely preferable implementation steps of the invention and processes, are not used in the limitation present invention.Moreover, all in this hair
The work such as any modification, synonymous replacement, the improvement made within bright spirit and principle, should be included in protection model of the invention
Within enclosing.
Claims (5)
1. a kind of new energy power plant is grid-connected to be led to ancillary service cost methodology, which is characterized in that this method is according to new energy
Electricity generation grid-connecting is led to the mechanism of peak regulation, frequency modulation and spinning reserve service for power system, establish network load low-valley interval, the usual period,
Peak period new energy power plant is grid-connected to be led to ancillary service cost floor area sharing, apparent power grid difference run the period new energy power plant
The grid-connected mode and step for being led to that ancillary service cost is shared will be the grid-connected dynamic price of new energy power plant under Power Market
Formulation provide technical basis.
2. new energy power plant according to claim 1 is grid-connected to be led to ancillary service cost methodology, which is characterized in that institute
The network load low-valley interval and peak period new energy power plant stated are grid-connected to be led to that ancillary service cost is shared including peak regulation auxiliary
Service fee is shared, frequency modulation ancillary service cost is shared and spinning reserve service for power system expense allocation, when network load is usual
Section new energy power plant is grid-connected to be led to that ancillary service cost is shared and shares including frequency modulation ancillary service cost and spinning reserve auxiliary takes
Business expense allocation, as follows:
(1) network load low-valley interval, i-th of new energy power plant is grid-connected to be led to that ancillary service cost is shared are as follows:
fdg,i=fdg,pR,i+fdg,fR,i+fdg,sR,i (1)
In formula, fdg,iIt is led to that auxiliary expenses shares result for the load low-valley interval new energy power plant is grid-connected；fdg,pR,i、fdg,fR,i
With fdg,sR,iThe respectively grid-connected peak regulation being led to of the period new energy power plant, frequency modulation and spinning reserve service for power system expense allocation
As a result；
(2) the network load usual period, j-th of new energy power plant is grid-connected to be led to that ancillary service cost is shared are as follows:
fpc,j=fpc,fR,j+fpc,sR,j (2)
In formula, fpc,jIt is led to that auxiliary expenses shares result for the load usual period new energy power plant is grid-connected；fpc,fR,jWith fpc,sR,j
The respectively grid-connected frequency modulation being led to of the period new energy power plant and spinning reserve service for power system expense allocation result；
(3) the load peak period, k-th of new energy power plant is grid-connected to be led to that ancillary service cost is shared are as follows:
fgf,k=fgf,pR,k+fgf,fR,k+fgf,sR,k (3)
In formula, fgf,kIt is led to that auxiliary expenses shares result for the load peak period new energy power plant is grid-connected；fgf,pR,k、fgf,fR,k
With fgf,sR,kThe respectively grid-connected peak regulation being led to of the period new energy power plant, frequency modulation and spinning reserve service for power system expense allocation
As a result.
3. a kind of new energy power plant according to claim 1 is grid-connected to be led to that ancillary service cost methodology, feature exist
In, the network load low-valley interval, usual period, peak period new energy power plant are grid-connected is led to that ancillary service cost is shared
Method, the grid-connected peak regulation being led to of i-th of new energy power plant of load valley period, frequency modulation and the spinning reserve service for power system expense
With methodology are as follows:
The grid-connected peak regulation ancillary service cost being led to of (1) i-th of new energy power plant is shared:
In formula, IdgIt is load low-valley interval using Δ t as the time interval in period sum；fdg,pR,i(t) the load valley period is indicated
T-th of grid-connected peak regulation ancillary service cost being led to of the Δ t period new energy power plant, as follows:
In formula, pdg,i(t) for t-th the Δ t period the grid-connected power output of new energy power plant；Pdg,pR,1、Pdg,pR,2With Pdg,pR,3Respectively
Peak regulation ancillary service price when peak regulation ancillary service is by energy-storage system, fired power generating unit depth peak regulation, conventional power unit start and stop offer,
Combine formulation with government organs by grid company；pdg,i,1,rg(t) and pdg,i,2,rg(t) be respectively t-th the Δ t period the new energy
The peak regulation ancillary service provided by energy-storage system and fired power generating unit depth peak regulation that source power plant ought to be used with compensation by installed capacity
Capacity, are as follows:
In formula, the new energy power plant being incorporated into the power networks in N expression system is total；chIndicate h-th of new energy power plant being incorporated into the power networks dress
Machine capacity；pdg,1,rg(t) and pdg,2,rg(t) be respectively in t-th of Δ t periodic system energy-storage system provide peak capacity and fire
The peak capacity that motor group depth peak regulation provides；
The grid-connected frequency modulation ancillary service cost being led to of (2) i-th of new energy power plant is shared:
In formula, fdg,fR,i(t) t-th of grid-connected frequency modulation auxiliary clothes being led to of the Δ t period new energy power plant of load valley period are indicated
Business expense is as follows:
In formula, pdg,i,Δt(t) and pdg,Δt(t) be respectively i-th of new energy power plant in t-th of Δ t period it is grid-connected go out fluctuation
Amount and new energy power plant grid-connection comprehensive power output undulate quantity；Adj () is the grid-connected fluctuation direction out of i-th of new energy power plant
Going out fluctuation orientation consistency decision function with new energy power plant grid-connection comprehensive, value is 0 both to indicate that fluctuation direction is inconsistent,
Otherwise indicate that the two fluctuation direction is consistent；GdgRepresenting fluctuation direction, with new energy power plant grid-connection comprehensive to go out fluctuation consistent
New energy power plant set；Pdg,ΔtThe frequency modulation ancillary service price that load valley period new energy power generation grid-connection is led to is indicated, by electricity
Net company combines formulation with government department；
The grid-connected spinning reserve service for power system expense allocation being led to of (3) i-th of new energy power plant:
In formula, fdg,sRIt indicates that load valley period new energy power plant is grid-connected and is led to spinning reserve service for power system total cost；σdg,iWith
kdg,iFor the standard deviation of the grid-connected power output prediction deviation of i-th of new energy power plant of load low-valley interval, and share the period new energy
Source electricity generation grid-connecting is led to the coefficient of spinning reserve service for power system expense, as follows:
In formula, σdg,lFor the standard deviation of the load prediction deviation of load low-valley interval.
4. a kind of new energy power plant according to claim 1 is grid-connected to be led to that ancillary service cost methodology, feature exist
In the grid-connected frequency modulation being led to of j-th of new energy power plant of the load usual period and spinning reserve service for power system expense allocation
Method are as follows:
The grid-connected frequency modulation ancillary service cost f being led to of (1) j-th of new energy power plantpc,fR,jAre as follows:
In formula, IpcIt is the load usual period with the time interval number in Δ t period；fpc,fR,j(t) the usual period t of load is indicated
The grid-connected frequency modulation ancillary service cost being led to of the new energy power plant of a Δ t period, as follows:
In formula, ppc,j,Δt(t) and ppc,ΔtIt (t) is respectively the grid-connected power output undulate quantity of j-th of new energy power plant in t-th of Δ t period
With new energy power plant grid-connection comprehensive power output undulate quantity；Gpc(t) it indicates to go out fluctuation direction and new energy electricity in t-th of Δ t period
Factory's grid-connection comprehensive goes out the consistent new energy power plant set in fluctuation direction；Ppc,ΔtIndicate the usual period generation of electricity by new energy of load simultaneously
The frequency modulation ancillary service price that net is led to is formulated by grid company and government's part combination；
The grid-connected spinning reserve service for power system expense allocation being led to of (2) j-th of new energy power plant:
In formula, fpc,sRIndicate the spinning reserve service for power system total cost that the usual period new energy power generation grid-connection of load is led to；M is negative
The usual period new energy power generation grid-connection number of lotus；σpc,jWith kpc,jRespectively j-th of new energy power plant of load usual period is grid-connected out
Power prediction deviation standard deviation and its share the period spinning reserve service for power system cost coefficient, as follows:
In formula, σpc,lLoad prediction deviation standard for the load usual period is poor.
5. a kind of new energy power plant according to claim 1 is grid-connected to be led to that ancillary service cost methodology, feature exist
In the grid-connected peak regulation being led to of k-th of new energy power plant of load peak period, frequency modulation and the spinning reserve service for power system expense
With methodology are as follows:
The grid-connected peak regulation ancillary service cost being led to of (1) k-th of new energy power plant is shared:
In formula, IgfIt is load peak period using Δ t as the time interval number in period；fgf,pR,k(t) k-th of Δ t period is indicated
The grid-connected peak regulation ancillary service cost being led to of the new energy power plant, as follows:
In formula, pgf,k(t) for t-th the Δ t period the grid-connected power output of new energy power plant；Pgf,pR,1、Pgf,pR,2With Pgf,pR,3Respectively
Peak regulation ancillary service price when peak regulation ancillary service is by energy-storage system, flexible load, conventional power unit start and stop offer, by power grid public affairs
Department, government organs and user side negotiate to formulate；pgf,k,1,rg(t) and pgf,k,2,rg(t) be respectively t-th the Δ t period the new energy
The peak regulation ancillary service capacity provided by energy-storage system and flexible load that source power plant ought to be used with compensation by installed capacity, respectively
Are as follows:
In formula, W indicates the new energy power plant total number being incorporated into the power networks in load peak period system；pgf,1,rg(t) and pgf,2,rg
(t) it is respectively peak capacity that t-th of Δ t period energy-storage system and flexible load provide；
The grid-connected frequency modulation ancillary service cost being led to of (2) k-th of new energy power plant is shared:
In formula, fgf,fR,k(t) t-th of grid-connected frequency modulation auxiliary clothes being led to of the Δ t period new energy power plant of load peak period are indicated
Business expense is as follows:
In formula, pgf,k,Δt(t) and pgf,ΔtIt (t) is respectively the grid-connected power output undulate quantity of k-th of new energy power plant in t-th of Δ t period
With new energy power plant grid-connection comprehensive power output undulate quantity；GgfIt represents fluctuation direction and new energy power plant grid-connection comprehensive goes out fluctuation
Consistent new energy power plant set；Pgf,ΔtIndicate the frequency modulation ancillary service valence that load peak period new energy power generation grid-connection is led to
Lattice combine formulation with government department by grid company；
The grid-connected spinning reserve service for power system expense allocation being led to of (3) k-th of new energy power plant:
In formula, fdg,sRIndicate the grid-connected spinning reserve service for power system total cost being led to of load peak period new energy power plant；σgf,k
With kgf,kFor the grid-connected power output prediction deviation standard deviation of k-th of new energy power plant of load peak period and its share the period new energy
Electricity generation grid-connecting is led to spinning reserve service for power system cost coefficient, as follows:
In formula, σgf,lIt is poor for the load prediction deviation standard of load peak period.
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| CN111882146B (en) * | 2020-06-10 | 2023-12-22 | 国家电网公司华北分部 | Cost allocation method and computing equipment for thermal power unit reconstruction |
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