CN106160009A - A kind of interconnected electric power system based on risk node electricity price dispersion coordinated dispatching method - Google Patents
A kind of interconnected electric power system based on risk node electricity price dispersion coordinated dispatching method Download PDFInfo
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- H—ELECTRICITY
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- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
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- G06Q10/0631—Resource planning, allocation, distributing or scheduling for enterprises or organisations
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- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
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Abstract
The invention discloses the collaborative Risk Scheduling method of a kind of interconnected network based on risk node electricity price dispersion.Interconnected electric power system is first decomposed into multiple region control subsystem by the present invention；Between initialization area subsystem, tie-line power transmission is zero；Each region control subsystem control centre, according to up-to-date tie-line power transmission value, solves security constrained economic dispatch problem based on risk, obtains the risk node electricity price on each common link point；Whether relatively adjacent area subsystem has identical risk node electricity price on coupling common link point；If risk node electricity price is different on coupling common link point, then adjacent area control centre is by comparing risk node electricity price curve, adjusts interconnection with the risk node electricity price on balance coupling common link point；If all connected regions have identical risk node electricity price on coupling common link point, then iteration terminates, and obtains final operation plan.Present invention achieves three wins of interconnected electric power system economy, safety, risk.
Description
Technical field
The invention belongs to Electricity market risk scheduling research field, be specifically related to a kind of interconnection based on risk node electricity price
Power system dispersion coordinated dispatching method.
Background technology
" State Council of the Central Committee of the Communist Party of China is about the some suggestions deepening power system reform further " table of the up-to-date issue of China
Bright, building more open, fair electricity market will be the important development direction that changes of China's electricity.China has formed North China, China the most
In, East China, northeast, northwest, south interconnection electric power general layout.
Along with sustainable growth and the continuous infiltration of regenerative resource of electricity needs, traditional centralized scheduling method is by face
Face the problems such as modeling accuracy is low, solving speed is slow.In this context, distributed power scheduling strategy arises at the historic moment, and it passes through
Extensive scheduling problem is decomposed into several less subproblem and solves by Region Decomposition, effectively improves computational efficiency,
The scheduling real-time making interconnected electric power system is possibly realized.
At present, what national grid was used is all based on deterministic schedule principle, often have ignored Operation of Electric Systems mistake
Uncertain risk present in journey, it is impossible to provide the scheduling controlling strategy that economy, safety and risk are made overall plans and coordinate.Risk Scheduling
Consider the multiple uncertain factor including load random fluctuation, line fault stoppage in transit, severe hazard weather to electric power
The impact of system reliability, is the Advantageous developments of tradition deterministic schedule method.Unit Combination based on risk and based on wind
The economic load dispatching of danger is all by the Line Flow after control fault and system risk level, it is possible to obtain more preferably power system fortune
Line mode, including start-stop of generator set plan and the plan of exerting oneself.
Node electricity price theory effectively goes out clear means as the one under market mechanism, is widely used in the world, including
New York ISO, California ISO, New Zealand carry out market clearing the most according to this.Traditional concentrate tube is made under clear mode, regional electricity
Net is as the passive receiver of operation plan, it is impossible to exist as independent electric power prosumer, it is impossible to play between regional power grid
Electricity transaction ability.
Accordingly, it would be desirable to study the collaborative Risk Scheduling method of a kind of interconnected network based on risk node electricity price dispersion, with suitable
Answer the development of electricity market.While improving scheduling decision efficiency, it is ensured that the low-risk of system is run.
Summary of the invention
For the above-mentioned technical problem existing for prior art, it is an object of the invention to provide a kind of based on risk node
The collaborative Risk Scheduling method of interconnected network dispersion of electricity price.
The technical solution adopted for the present invention to solve the technical problems comprises the steps:
Step 1, interconnected electric power system is decomposed into multiple region control subsystem with electricity transaction ability；After decomposition many
The type of individual region control subsystem includes interconnecting type I, interconnection Type II and interconnection type III；Each circuit in the subsystem of setting area
Load risk indicator threshold value, and between initialization area subsystem, tie-line power transmission is zero；
Step 2, each region control subsystem control centre, according to up-to-date tie-line power transmission value, solve one's respective area subsystem
Security constrained economic dispatch problem based on risk, obtains the risk node electricity price on each common link point；
Step 3, compare adjacent area subsystem coupling common link point on whether have identical risk node electricity price；
If all region control subsystem being connected to same common link point have identical electricity price on this common link point, then enter step
Rapid 6；Otherwise, step 4 is entered；
Step 4, the control centre of region control subsystem recalculate the most local common link point risk node electricity price with
The change curve of dominant eigenvalues, and send it to adjacent area subsystem；
Step 5, each region control subsystem control centre by comparing the risk node self being adjacent region control subsystem
Electricity price curve, obtains tie-line power transmission value now；Adjust tie-line power transmission value with balance coupling common link point
On risk node electricity price；Enter step 2 and start iteration next time；
Described comparison risk node electricity price curve: be adjacent region control subsystem place by seeking each region control subsystem
On coupling common link point, the joining of risk node electricity price curve realizes；
Step 6, iteration terminate, and obtain final operation plan.
Described risk node electricity price is defined as the systematic running cost that on node, the increase of specific load demand causes and increases
Amount, risk node electricity price can be by asking local derviation to obtain the Lagrangian of security constrained economic dispatch model based on risk
Arriving, its computational methods are:
Described risk node electricity price includes four parts, is divided into energy cost λ1, network loss price
Congested priceAnd price of riskWherein, μ1l、μ2lDraw for security constraint
Ge Lang multiplier, the price of risk being newly introduced is by power Distributed Transmission factor Hl-j, circuit forced outage rate Prl, circuit risk refers to
The mark tiny increment a to load factorml, Risk Constraint Lagrange multiplier τlAnd line transmission capacity Fl maxPhase multiplication and division obtain.
Interconnection type I, interconnection Type II and interconnection type III described in step 1, respectively to having collaborative strategy, the most such as
Under:
Interconnection type I: for only existing the three star-like interconnected electric power systems in region of single common link point, in each iteration
In choose two region control subsystem randomly, make the public chain of these two region control subsystem by adjusting tie-line power transmission value
Risk node electricity price on contact is consistent, until all of three region control subsystem have identical node on common link point
Electricity price；
Interconnection Type II: for there are three region line style interconnected electric power systems of two common link points, first adjust A, B
Tie-line power transmission value between two region control subsystem is to balance the risk node electricity price of common link point；B region control subsystem to
Adjacent C region control subsystem provides the electricity price curve that another common link point II is up-to-date, and carries out common link point II windward
The balance of danger node electricity price；After the node electricity price of common link point II reaches balance, A, B region control subsystem enters next time
Tie-line power transmission value balances；And so on, until the risk node that adjacent area subsystem is on coupling common link point
Electricity price is identical, then loop ends；
Interconnection type III: for there is the three ring-like interconnected electric power systems in region of three common link points, equilibrium area successively
The tie-line power transmission value of territory subsystem A&B, B&C, A&C, circulation is carried out, until being connected to the difference of same common link point
Region control subsystem has identical risk node electricity price on this common link point；And adjust every time tie-line power transmission value it
Before, the control centre of each region control subsystem need to obtain node electricity price up-to-date common link point from adjacent region control subsystem
Curve, and after balance terminates every time, up-to-date dominant eigenvalues and node electricity price curve are returned to adjacent area subsystem
Control centre.
The present invention has the beneficial effect that:
One aspect of the present invention uses dispersion collaborative strategy, it is possible to using each district system as independent electric power prosumer couple
Treat, to meet the development trend of Future Power System decentration.On the other hand dispatching party based on risk node electricity price is used
Method, to realize interconnected electric power system economy, safety, " three win " of risk.
Accompanying drawing explanation
Fig. 1 is to interconnect type I, interconnection Type II and the schematic diagram of interconnection type III correspondence in the present invention.
Fig. 2 is flow chart of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described.
As illustrated in fig. 1 and 2, the collaborative Risk Scheduling method of a kind of interconnected network based on risk node electricity price dispersion, specifically
Realize step as follows:
Step 1, interconnected electric power system is decomposed into multiple region control subsystem with electricity transaction ability.After decomposition many
The type of individual region control subsystem includes interconnecting type I (star-like interconnection), interconnection Type II (line style interconnection) and interconnection type III (ring
Type interconnects), referring to Fig. 1；The load risk indicator threshold value of each circuit in the subsystem of setting area, and between initialization area subsystem
Tie-line power transmission is zero.
Step 2, each region control subsystem control centre, according to up-to-date tie-line power transmission value, solve one's respective area subsystem
Security constrained economic dispatch (RB-SCED) problem based on risk, obtains the risk node electricity price on each common link point.
Described risk node electricity price is defined as the systematic running cost that on node, the increase of specific load demand causes and increases
Amount, risk node electricity price can be by asking local derviation to obtain the Lagrangian of security constrained economic dispatch model based on risk
Arriving, its computational methods are:
Described risk node electricity price includes four parts, is divided into energy cost λ1, network loss price
Congested priceAnd price of riskWherein, μ1l、μ2lDraw for security constraint
Ge Lang multiplier, the price of risk being newly introduced is by power Distributed Transmission factor Hl-j, circuit forced outage rate Prl, circuit risk refers to
The mark tiny increment a to load factorml, Risk Constraint Lagrange multiplier τlAnd line transmission capacity Fl maxPhase multiplication and division obtain.
Step 3, compare adjacent area subsystem coupling common link point on whether have identical risk node electricity price.
If all region control subsystem being connected to same common link point have identical electricity price on this common link point, then enter step
Rapid 6.Otherwise, step 4 is entered.
Step 4, the control centre of region control subsystem recalculate the most local common link point risk node electricity price with
The change curve of dominant eigenvalues, and send it to adjacent area subsystem.
Step 5, each region control subsystem control centre by comparing the risk node self being adjacent region control subsystem
Electricity price curve, obtains tie-line power transmission value now.Adjust tie-line power transmission value with balance coupling common link point
On risk node electricity price.Enter step 2 and start iteration next time.
Described comparison risk node electricity price curve: be adjacent region control subsystem place by seeking each region control subsystem
On coupling common link point, the joining of risk node electricity price curve realizes.
Step 6, iteration terminate, and obtain final operation plan.
Referring to Fig. 1, the present invention is directed to the interconnection type I (star-like interconnection) described in step 1, interconnection Type II (line style interconnection)
With interconnection type III (ring-like interconnection), it is proposed that corresponding collaborative strategy, specific as follows:
Interconnection type I (star-like interconnection): for only existing the three star-like interconnected electric power systems in region of single common link point,
Choose two regional power grids the most randomly, make these two regional power grids by adjusting tie-line power transmission value
Risk node electricity price on common link point is consistent, until all of three region control subsystem have identical on common link point
Node electricity price.
Interconnection Type II (line style interconnection): for there is the line style interconnected electric power system of two common link points, first adjust
Whole A, the B two dominant eigenvalues between regional power grid is with the risk node electricity price of balance common link point 1 (PCC1).B region is to phase
Adjacent C region provides the electricity price curve that common link point 2 (PCC2) is up-to-date, and carries out risk node electricity price on common link point 2
Balance.After the node electricity price of common link point 2 reaches balance, A, B region enters power-balance next time.Such as this type of
Push away, until the risk node electricity price that adjacent area subsystem is on coupling common link point is identical, then loop ends.
Interconnection type III (ring-like interconnection): for there are the three ring-like interconnected electric power systems in region of three common link points,
The tie-line power transmission value of equilibrium region A&B, B&C, A&C successively, circulation is carried out until being connected to same common link point
Zones of different electrical network has identical risk node electricity price at that point.Before adjusting tie-line power transmission value, often every time
The control centre of individual region control subsystem need to obtain node electricity price curve up-to-date common link point from adjacent region control subsystem,
And after balance terminates every time, up-to-date dominant eigenvalues and node electricity price curve are returned to the scheduling of adjacent area subsystem
Center.
Claims (3)
1. the collaborative Risk Scheduling method of interconnected network based on risk node electricity price dispersion, it is characterised in that include walking as follows
Rapid:
Step 1, interconnected electric power system is decomposed into multiple region control subsystem with electricity transaction ability；Multiple districts after decomposition
The type of territory subsystem includes interconnecting type I, interconnection Type II and interconnection type III；In the subsystem of setting area, each circuit is negative
Carrying tie-line power transmission between risk indicator threshold value, and initialization area subsystem is zero；
Step 2, each region control subsystem control centre according to up-to-date tie-line power transmission value, solve one's respective area subsystem based on
The security constrained economic dispatch problem of risk, obtains the risk node electricity price on each common link point；
Step 3, compare adjacent area subsystem coupling common link point on whether have identical risk node electricity price；If institute
There is the region control subsystem being connected to same common link point to have identical electricity price on this common link point, then enter step 6；
Otherwise, step 4 is entered；
Step 4, the control centre of region control subsystem recalculate the most local common link point risk node electricity price with contact
The change curve of linear heat generation rate, and send it to adjacent area subsystem；
Step 5, each region control subsystem control centre by comparing the risk node electricity price self being adjacent region control subsystem
Curve, obtains tie-line power transmission value now；Adjust tie-line power transmission value with on balance coupling common link point
Risk node electricity price；Enter step 2 and start iteration next time；
Described comparison risk node electricity price curve: be adjacent the coupling of region control subsystem place by seeking each region control subsystem
On common link point, the joining of risk node electricity price curve realizes；
Step 6, iteration terminate, and obtain final operation plan.
The collaborative Risk Scheduling method of a kind of interconnected network based on risk node electricity price the most according to claim 1 dispersion,
It is characterized in that described risk node electricity price is defined as the systematic running cost that on node, the increase of specific load demand causes and uses
Increment, risk node electricity price can be by seeking local derviation to the Lagrangian of security constrained economic dispatch model based on risk
Obtaining, its computational methods are:
Described risk node electricity price includes four parts, is divided into energy cost λ1, network loss priceCongested
PriceAnd price of riskWherein, μ1l、μ2lBright for security constraint glug
Day multiplier, the price of risk being newly introduced is by power Distributed Transmission factor Hl-j, circuit forced outage rate Prl, circuit risk indicator pair
The tiny increment a of load factorml, Risk Constraint Lagrange multiplier τlAnd line transmission capacityPhase multiplication and division obtain.
The collaborative Risk Scheduling method of a kind of interconnected network based on risk node electricity price the most according to claim 1 dispersion,
It is characterized in that the interconnection type I described in step 1, interconnection Type II and interconnection type III, respectively to having collaborative strategy, specifically
As follows:
Interconnection type I: for only existing the three star-like interconnected electric power systems in region of single common link point, in each iteration with
Choose two region control subsystem machine, make the common link point of these two region control subsystem by adjusting tie-line power transmission value
On risk node electricity price consistent, until all of three region control subsystem have identical node electricity on common link point
Valency；
Interconnection Type II: for there are three region line style interconnected electric power systems of two common link points, first adjust A, B twoth district
Tie-line power transmission value between the subsystem of territory is to balance the risk node electricity price of common link point；B region control subsystem is to adjacent
C region control subsystem provide another common link point II up-to-date electricity price curve, and carry out risk joint on common link point II
The balance of some electricity price；After the node electricity price of common link point II reaches balance, A, B region control subsystem enters contact next time
Line transmission power value balances；And so on, until the risk node electricity price that adjacent area subsystem is on coupling common link point
Identical, then loop ends；
Interconnection type III: for there are the three ring-like interconnected electric power systems in region of three common link points, equilibrium region successively
System A&B, the tie-line power transmission value of B&C, A&C, circulation is carried out, until being connected to the zones of different of same common link point
Subsystem has identical risk node electricity price on this common link point；And before adjusting tie-line power transmission value, every time
It is bent that the control centre of each region control subsystem need to obtain node electricity price up-to-date common link point from adjacent region control subsystem
Line, and after balance terminates every time, up-to-date dominant eigenvalues and node electricity price curve are returned to the tune of adjacent area subsystem
Degree center.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106549381A (en) * | 2017-01-17 | 2017-03-29 | 南方电网科学研究院有限责任公司 | Match somebody with somebody electricity consumption interactive simulation optimization method containing the industrial parks for participating in main body more |
| CN110224399A (en) * | 2019-06-12 | 2019-09-10 | 广东电网有限责任公司 | Power spot market based on wind power plant goes out clearing method, device and storage medium |
| CN111009965A (en) * | 2019-11-20 | 2020-04-14 | 北京中电飞华通信股份有限公司 | Power grid cooperative dispatching module |
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| US20140277599A1 (en) * | 2013-03-13 | 2014-09-18 | Oracle International Corporation | Innovative Approach to Distributed Energy Resource Scheduling |
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| US20140277599A1 (en) * | 2013-03-13 | 2014-09-18 | Oracle International Corporation | Innovative Approach to Distributed Energy Resource Scheduling |
Non-Patent Citations (2)
| Title |
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| QIN WANG， ET AL: "Risk-Based Locational Marginal Pricing and Congestion Management", 《IEEE TRANSACTIONS ON POWER SYSTEMS》 * |
| 沈俭荣: "市场环境下配电系统自治运行研究", 《CMKI中国优秀硕士学位论文全文数据库》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106549381A (en) * | 2017-01-17 | 2017-03-29 | 南方电网科学研究院有限责任公司 | Match somebody with somebody electricity consumption interactive simulation optimization method containing the industrial parks for participating in main body more |
| CN110224399A (en) * | 2019-06-12 | 2019-09-10 | 广东电网有限责任公司 | Power spot market based on wind power plant goes out clearing method, device and storage medium |
| CN110224399B (en) * | 2019-06-12 | 2023-06-30 | 广东电网有限责任公司 | Electric power spot market clearing method and device based on wind power plant and storage medium |
| CN111009965A (en) * | 2019-11-20 | 2020-04-14 | 北京中电飞华通信股份有限公司 | Power grid cooperative dispatching module |
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