CN108022021A - A kind of cascade hydropower participate in inside the province with transferring electricity from the west to the east marketing-mix trading strategies optimization method - Google Patents
A kind of cascade hydropower participate in inside the province with transferring electricity from the west to the east marketing-mix trading strategies optimization method Download PDFInfo
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Abstract
The invention belongs to Electric Power Network Planning and management and running field, be related to a kind of cascade hydropower participate in inside the province with transferring electricity from the west to the east marketing-mix trading strategies optimization method.The electricity price scene that the present invention is likely to occur based on market inside the province and transferring electricity from the west to the east two single market futures of market, combination obtain polynary market guidance scene；Build the gene-ration revenue maximum model that step participates in market inside the province and transferring electricity from the west to the east market；Solved using nonlinear programming approach, optimization obtains step participation, and the beneficial effects of the invention are as follows prediction power grid future development for the combination trading strategies in market and transferring electricity from the west to the east market inside the province, realize the step generation optimization scheduling under polynary Power Market, it can be provided for the power dispatch system operation and management of the extensive Hydropower Stations in Southwestern China area under new electric power environmental beneficial to support, there is the important meaning of setting an example that takes the lead in.
Description
Technical field
The invention belongs to Electric Power Network Planning and management and running field, more particularly to a kind of cascade hydropower participates in eastern with western electricity inside the province
Send marketing-mix trading strategies optimization method.
Background technology
Break up monopoly, introduction of competition, realize resource reasonably optimizing configuration in larger scope, be new round electric power city of China
The core objective of fieldization reform.The water power clean energy resource main as China and transferring electricity from the west to the east supply power supply, are Generation Side electric power
The important participant in market, as market-oriented reform deepens continuously, transaction size constantly expands and the gradual of trade variety is enriched,
Its management and running faces new change and challenge, such as uncertain price of market exchange, the market demand of diversification, and complicated
Waterpower, electric power, price coupled relation etc., the gene-ration revenue of Hydropower Enterprise ' will be directly affected.Therefore, the present invention proposes one kind
Cascade hydropower is participated in inside the province with transferring electricity from the west to the east marketing-mix trading strategies optimization method, can be that southwest Hydropower Stations are joined
Decision support is provided with electricity market, there is important theory significance and engineering practical value.
The Wujiang River is a tributary of Upper Yangtze River south bank maximum, and abundant water, waterpower resourses are richly endowed by nature, full basin waterpower
Resource theory reserves are one of 13 big Hydropower Bases of China up to 10,420,000 kW, and development of the West Regions " transferring electricity from the west to the east "
One of main power source point.Mainstream step includes seven Hong Jiadu, east wind, Suofengying, Wu Jiangdu, Goupitan, Silin and Sha Tuo electricity
Stand, exploitation and management are responsible for by Guizhou Wujiang River hydroelectric development Co., Ltd, all gone into operation at present.Market environment
Under, how Cascade Stations on Wujiang River, which adapts to state's household electrical appliances, changes policy, south electric network and Guizhou Province's power system reform pilot scheme, tackles market
Electricity price fluctuation situation, realize it is multi-period under polynary market maximum revenue, be the major issue that step Optimized Operation faces.Cause
This, a kind of cascade hydropower proposed by the present invention is participated in inside the province with transferring electricity from the west to the east marketing-mix trading strategies optimization method in Wujiang River ladder
The implementation of level has practical meaning in engineering.
It is relatively fewer that the research of electricity market is participated on cascade hydropower at present, and is focused mostly in single market trading strategies
Research, it is fresh to be related to polynary marketing-mix trading strategies less, and lack engineering real case applied analysis.Achievement of the present invention relies on state
Family's Natural Science Fund In The Light is entrusted great international cooperation (51210014), state natural sciences fund (51579029), with south electric network,
Guizhou Power Grid power market reform pilot scheme is background, and using Cascade Stations on Wujiang River GROUP OF HYDROPOWER STATIONS as research object, achievement can be China
Power dispatch system operation and management of the other Large Watershed steps in southwest under new environment provides support, has the important meaning of setting an example that takes the lead in.
The content of the invention
In view of the deficiencies of the prior art, the present invention is intended to provide a kind of cascade hydropower participate in inside the province with transferring electricity from the west to the east market group
Close trading strategies optimization method, based on future be likely to occur a variety of electricity price scenes combination, using step marketization Income Maximum as
Target, optimization obtain step and participate in the combination trading strategies with transferring electricity from the west to the east market inside the province, realize rational polynary market environment
Lower step GROUP OF HYDROPOWER STATIONS power generation dispatching.
The technical scheme is that：
A kind of cascade hydropower participates in specifically including following step with transferring electricity from the west to the east marketing-mix trading strategies optimization method inside the province
Suddenly：
(1) the electricity price scene being likely to occur based on market inside the province and transferring electricity from the west to the east two single market futures of market, combination
Obtain polynary market guidance scene；
(2) statistics step send electricity inside the province and step send the historical data of transferring electricity from the west to the east electricity, and combines relevant departments' political affairs
Plan requirement, determines to participate in the ratio of market electricity inside the province and transferring electricity from the west to the east market electricity, and scheduling in the whole schedule periods of step
Day part step participates in the minimum amount of power in market inside the province in phase；
(3) structure participates in the comprehensive electric generating Income Maximum in market inside the province and transferring electricity from the west to the east market as optimization aim using step
Power generation dispatching model, object function are as follows：
In formula, maxF is maximum generation income；K=1,2 ..., K are combination electricity price scene numbering, when there is L kinds market inside the province
When electricity price scene, G kinds transferring electricity from the west to the east market guidance scene, K=L × G；T=1,2 ..., segment number when T is；ρkFor kth kind group
Close the probability that electricity price scene occurs；E1,tAnd E2,tRespectively t periods step participates in the electricity in market inside the province and transferring electricity from the west to the east market,
Unit：kWh；WithRespectively under kth kind combination electricity price scene, t periods market and transferring electricity from the west to the east market guidance inside the province are single
Position：Member/kWh；
Day part step participates in market electricity inside the province and participates in the sum of transferring electricity from the west to the east market electricity consistently equal in schedule periods
Gross generation of the step in the period；
(4) the step participation built is solved using nonlinear programming approach, and market and the comprehensive of transferring electricity from the west to the east market send out inside the province
Electric Income Maximum is the power generation dispatching model of optimization aim, and optimization obtains the group that step participates in market inside the province and transferring electricity from the west to the east market
Close trading strategies.
Beneficial effects of the present invention：A kind of cascade hydropower of the present invention participate in inside the province with transferring electricity from the west to the east marketing-mix trading strategies
Optimization method, it is contemplated that step simultaneously participates in the situation of electricity market inside the province and transferring electricity from the west to the east electricity market, and introduces whole
Step participates in the ratio constraint of market electricity inside the province and transferring electricity from the west to the east market electricity, and day part ladder in schedule periods in schedule periods
Level participates in the minimum amount of power constraint in market inside the province, makes model more actual close to engineering；It will be likely to occur based on single market future
Electricity price scene, combination obtains polynary market guidance scene, and structure step participates in the gene-ration revenue maximum norm of polynary electricity market
Type, is solved using nonlinear programming approach, and optimization obtains the combination transaction plan that step participates in market inside the province and transferring electricity from the west to the east market
Slightly, the step generation optimization scheduling for adapting to market environment is realized.
Brief description of the drawings
Fig. 1 is the method for the present invention overview flow chart；
Fig. 2 is the scheduling water level process figure that power station is crossed by big vast family；
Fig. 3 is the scheduling water level process figure of Dongfeng Hydropower；
Fig. 4 is the scheduling water level process figure in Suofengying power station；
Fig. 5 is the scheduling water level process figure that power station is crossed in the Wujiang River；
Fig. 6 is the scheduling water level process figure of Goupitan Hydropower Station；
Fig. 7 is the scheduling water level process figure in Silin power station；
Fig. 8 is the scheduling water level process figure in Sha Tuo power stations；
Fig. 9 is that the step generated energy comparison diagram that the method for the present invention and actual schedule method optimize is respectively adopted；
Figure 10 is that the step power benefit comparison diagram that the method for the present invention and actual schedule method optimize is respectively adopted.
Embodiment
Below in conjunction with the accompanying drawings and technical solution, the embodiment of the present invention is further illustrated.
Different and Thermal Power Enterprises, Hydropower Stations, which participate in market, to be needed to consider water, step upstream and downstream hydraulic connection, electricity
Stand the factor such as storage capacity and dam safety evaluation performance, complicated waterpower, electric power constraint intercouple, it is difficult to handle.Close both at home and abroad at present
It is relatively fewer that the research of electricity market is participated in water power, and focuses primarily upon single power station and participates in market, shorter mention step
GROUP OF HYDROPOWER STATIONS participates in the power generation dispatching of market, especially Hydropower Stations under polynary Power Market, there is no phase at present
Close research.The main problem that Hydropower Stations face under polynary Power Market is：(1) market and transferring electricity from the west to the east inside the province
Market is simultaneously deposited, and how to be distributed the electricity that step participates in two markets, will be directly affected step marketization income；(2) under market environment,
Electricity price is no longer fixed constant, but with the changes such as the demand-supply relation, transaction size, Power Generation number dynamic electricity price because
Son, makes Hydropower Enterprise ' face the transaction risk of bigger；(3) between step upstream and downstream power station city is coupled there are close hydraulic connection
The electric power constraint of fieldization reform, forms the nonlinear programming problem of complexity, solves difficult.
Implementation process diagram of the present invention is as shown in Figure 1, specific implementation step is as follows：
(1) obtained based on the following electricity price scene being likely to occur of single market (market/transferring electricity from the west to the east market inside the province), combination
Polynary market guidance scene.The electricity price scene set that market is likely to occur inside the province is denoted as B1={ B1,1,B1,2,…,B1,l,…,
B1,L, L kind electricity price scenes are shared, l ∈ { 1,2 ..., L } number for scene, and the probability that l kinds scene occurs is ρ1,l, it is corresponding with
B1,l={ b1,1,b1,2,…,b1,t,…,b1,T, segment number when t ∈ { 1,2 ..., T } are, b1,tRepresent that the t periods are inside the province under the scene
The electricity price in market；The electricity price scene set that transferring electricity from the west to the east market is likely to occur is denoted as B2={ B2,1,B2,2,…,B2,g,…,B2,G},
Shared G kind electricity price scenes, g ∈ { 1,2 ..., G } number for scene, and the probability that g kind electricity prices scene occurs is ρ2,g, it is corresponding with
B2,g={ b2,1,b2,2,…,b2,t,…,b2,T, segment number when t ∈ { 1,2 ..., T } are, b2,tRepresent t periods west electricity under the situation
Send the electricity price in market in east.Combine electricity price scene set B*It is represented by：
The shared K kinds combination electricity price scene of note, then have k ∈ { 1,2 ..., K } for combination scene numbering, kth kind combination sceneThe probability ρ of appearancek=ρ1,l×ρ2,g。
(2) the gene-ration revenue maximum model that step participates in market inside the province and transferring electricity from the west to the east market is built.
Object function：
In formula, F is gene-ration revenue；ρkThe probability of electricity price scene appearance is combined for kth kind；E1,tAnd E2,tRespectively t period steps
Participate in the electricity in market inside the province and transferring electricity from the west to the east market, kWh；WithRespectively under kth kind combination electricity price scene, the t periods save
Interior market and transferring electricity from the west to the east market guidance, member/kWh.
The constraints of consideration：
1) water balance constrains：
In formula, Vm,t、Vm,t+1For m power stations at the beginning of the t+1 periods, the storage capacity at end；Qm,t、qm,t、dm,tWithRespectively m power stations
In the reservoir inflow of t periods, generating flow, abandon water flow and section reservoir inflow, m3/s。
2) last restriction of water level：
Zm,T=Z 'm,T (5)
In formula, Zm,TWith Z 'm,TThe respectively water level and its controlling value in the m power stations scheduling end of term.
3) generating flow constrains：
In formula,For the generating flow upper limit of m power stations t periods, m3/s。
4) output of power station constrains：
In formula, pm,t、Withp m,tThe respectively output and its upper and lower limit of m power stations t periods, MW.
5) reservoir level constrains：
In formula, Zm,t、WithZ m,tThe respectively water level and its upper and lower limit of m power stations t periods, m.
6) storage outflow constrains：
In formula, Sm,t、WithS m,tThe respectively storage outflow and its upper and lower limit of m power stations t periods, m3/s。
7) annual Constraint：
E1/E2=λ (10)
In formula, λ is the electricity ratio that Cascade Stations on Wujiang River participates in market inside the province and transferring electricity from the west to the east market, by flowing in company, saving and send out
Change the Multi Part Negotiations such as committee, provincial government to determine；Respectively Cascade Stations on Wujiang River participates in market and west inside the province
Send the annual electricity in market, kWh in electric east.
8) market minimum amount of power constrains inside the province：
E1,t≥E′1,t (11)
In formula, E '1,tMarket electricity inside the province, kWh should be at least participated in for the step t periods.
9) step generated energy constrains：
In formula, Am,tFor the power factor of m power stations t periods；Hm,tFor the productive head of m power stations t periods, m；Δ t is
Period interval length, h.
(3) solved using nonlinear programming approach.Optimal operation of cascade hydropower stations is generally acknowledged extensive, non-linear excellent
Change problem, Dynamic Programming is commonly used in Practical Project and its innovatory algorithm solves, but due to needing discrete water level, makes the easy face of problem
Face dimension calamity problem.Meanwhile constrained inside the province with transferring electricity from the west to the east market electricity ratio in whole schedule periods involved in this model, it is impossible to
Meet the markov property requirement of Dynamic Programming, therefore this problem directly can not be solved using Dynamic Programming and its innovatory algorithm.This
Literary grace is solved with nonlinear programming approach, and algorithm is by calling global solver (the Global integrated in LINGO softwares
Solver) realize.
Market inside the province and transferring electricity from the west to the east market are participated in as research background using Cascade Stations on Wujiang River GROUP OF HYDROPOWER STATIONS, using water in 2016
Data, it is assumed that it is 3 to participate in market electricity inside the province in step year and participate in transferring electricity from the west to the east market electricity ratio:1, calculate the step marketization
Income.Generated energy maximum model is still used in step actual schedule at this stage, and ginseng is distributed by a certain percentage in each period
With market inside the province and transferring electricity from the west to the east market electricity, it is 3 to also assume that each moon power energy allocation ratio:1, contrast shows, institute of the present invention
A kind of cascade hydropower carried participates in that whole schedule periods can be being kept with transferring electricity from the west to the east marketing-mix trading strategies optimization method inside the province
In the case that interior step participates in market inside the province and transferring electricity from the west to the east market electricity constant rate, step gene-ration revenue is improved, is had real
With value.Cascade Stations on Wujiang River mainstream shares seven power stations, and total installed capacity 8315MW, is respectively that power station, east wind electricity cross in big vast family from top to bottom
Stand, power station, Goupitan Hydropower Station, Silin power station and Sha Tuo power stations are crossed in Suofengying power station, the Wujiang River, wherein power station is crossed to adjust for many years by big vast family
Economize on electricity station, Dongfeng Hydropower, the Wujiang River cross power station and Goupitan Hydropower Station is endless full-time storage plant.Electricity market and Xi electricity Dong inside the province
The electricity price scene and probability of occurrence that power transmission is likely to occur in the power market dispatch phase are listed in table 1.
The method of the present invention is respectively adopted and each moon transaction combined strategy of actual schedule method is calculated at this stage step
It is listed in table 2.Contrast understands that in the case of identical water, the step whole year generated energy that institute's extracting method of the present invention optimizes is
2364916.47 ten thousand kWh, 2391166.99 ten thousand kWh used less than actual schedule, but power benefit adds 41808.43 ten thousand
Member.This explanation, institute's extracting method of the present invention can preferably respond market guidance change, make full use of the modulability that step is good
Can, the participation identical with actual schedule holdings inside the province market and participation transfer electricity from the west to the east market electricity ratio on the basis of, can have
Effect improves the comprehensive electric generating income of the polynary city of step off field.
Table 1
Note：Unit：Member/kWh
Table 2
Note：Electric quantity unit：Ten thousand kWh；Income unit：Wan Yuan
Fig. 2-Fig. 8 corresponds to the water level process in each power station from top to bottom, it is seen then that each power station water level is in maximum limitation Gao Shui
Between position and minimum require water level, and meet water changing rule in year, make full use of each power station regulation performance, such as have for many years
Power station is crossed by the big vast family of regulating power can effectively adjust storage capacity in annual scope, and for have the Goupitan of part regulating power,
The power stations such as east wind then only adjust storage capacity in partial period, meet power station dispatching principle.
Fig. 9 and Figure 10 gives the step generated energy and gene-ration revenue that the method for the present invention and operation schedule method is respectively adopted
Contrast, it is known that, the method for the present invention is respectively less than actual schedule in the generated energy of electricity market inside the province and transferring electricity from the west to the east electricity market, but
Power benefit adds 33479.89 ten thousand yuan and 8328.54 ten thousand yuan respectively, further demonstrates beneficial effects of the present invention.
Claims (1)
1. a kind of cascade hydropower participate in inside the province with transferring electricity from the west to the east marketing-mix trading strategies optimization method, it is characterised in that including
Following steps,
(1) the electricity price scene that two single market futures of transferring electricity from the west to the east market based on market inside the province are likely to occur, combination obtain
Polynary market guidance scene；
(2) statistics step send electricity inside the province and step send the historical data of transferring electricity from the west to the east electricity, and combines relevant departments' policy and want
Ask, determine to participate in the ratio of market electricity inside the province and transferring electricity from the west to the east market electricity in the whole schedule periods of step, and in schedule periods
Day part step participates in the minimum amount of power in market inside the province；
(3) structure is using step participation power generation of the comprehensive electric generating Income Maximum in market and transferring electricity from the west to the east market as optimization aim inside the province
Scheduling model, object function are as follows：
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<mi>&rho;</mi>
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<mo>&Sigma;</mo>
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</munderover>
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<mi>E</mi>
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In formula, maxF is maximum generation income；K=1,2 ..., K are combination electricity price scene numbering, when there is L kinds market guidance inside the province
When scene, G kinds transferring electricity from the west to the east market guidance scene, K=L × G；T=1,2 ..., segment number when T is；ρkElectricity is combined for kth kind
The probability that valency scene occurs；E1,tAnd E2,tRespectively t periods step participates in the electricity in market inside the province and transferring electricity from the west to the east market, single
Position：kWh；WithRespectively kth kind combination electricity price scene under, the t periods inside the province market and transferring electricity from the west to the east market guidance, unit：
Member/kWh；
Day part step participates in market electricity inside the province and participates in the sum of transferring electricity from the west to the east market electricity consistently equal to step in schedule periods
In the gross generation of the period；
(4) the step participation built is solved using nonlinear programming approach, and the comprehensive electric generating in market and transferring electricity from the west to the east market is received inside the province
Benefit is up to the power generation dispatching model of optimization aim, and optimization obtains the combination friendship that step participates in market inside the province and transferring electricity from the west to the east market
Easily strategy.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109902855A (en) * | 2019-01-14 | 2019-06-18 | 昆明电力交易中心有限责任公司 | The power station multiple-objection optimization of step key and power energy allocation method under a kind of market environment |
| JP7431368B2 (en) | 2022-06-06 | 2024-02-14 | 中国長江電力股▲ふん▼有限公司 | A method for solving the optimization scheduling model of a cascade hydropower plant based on a hybrid algorithm |
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2017
- 2017-12-19 CN CN201711376659.7A patent/CN108022021A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109902855A (en) * | 2019-01-14 | 2019-06-18 | 昆明电力交易中心有限责任公司 | The power station multiple-objection optimization of step key and power energy allocation method under a kind of market environment |
| CN109902855B (en) * | 2019-01-14 | 2023-02-14 | 昆明电力交易中心有限责任公司 | Multi-objective optimization and electric quantity distribution method for cascade key hydropower stations in market environment |
| JP7431368B2 (en) | 2022-06-06 | 2024-02-14 | 中国長江電力股▲ふん▼有限公司 | A method for solving the optimization scheduling model of a cascade hydropower plant based on a hybrid algorithm |
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