CN105514985A - Power grid aggregation model construction method - Google Patents

Power grid aggregation model construction method Download PDF

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Publication number
CN105514985A
CN105514985A CN201510891856.7A CN201510891856A CN105514985A CN 105514985 A CN105514985 A CN 105514985A CN 201510891856 A CN201510891856 A CN 201510891856A CN 105514985 A CN105514985 A CN 105514985A
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China
Prior art keywords
grid
polymerization
model
power
electrical network
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CN201510891856.7A
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CN105514985B (en
Inventor
黄越辉
礼晓飞
刘纯
范高锋
王跃峰
刘德伟
高云峰
许晓艳
马烁
张楠
许彦平
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/30—Circuit design
    • G06F30/36—Circuit design at the analogue level
    • G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation

Abstract

The invention provides a power grid aggregation model construction method, and the method comprises the following steps: a power grid is partitioned; and load model aggregation, tie-line model aggregation and power supply model aggregation are performed in every power grid area. According to the invention and the above steps, the simplify processing of the target power grid is realized; the complexity of the power grid is greatly reduced based on keeping operating characteristics of the power grid in prior art; and the calculating speed can be greatly improved in new energy accommodating capability calculation.

Description

A kind of construction method of electrical network polymerization model
Technical field
The invention belongs to technical field of new energy power generation, be specifically related to a kind of construction method of electrical network polymerization model.
Background technology
The mankind enter 21 century, and a new energy revolution is carried out silently.According to the needs of the sustainable development of socio-economy, people urgently call to set up and replace gradually based on the energy resource structure of the fossil energy of seriously polluted, resource-constrained based on energy resource structure that is clean, regenerative resource.Generation of electricity by new energy technology comprises solar photovoltaic technology, solar energy thermal-power-generating technology, wind generating technology, Generation Utilizing Biological Energy Sources, geothermal power generation technology, tidal power technology, fuel cell technology for power generation, wind generating technology etc., illustrates the technological progress achievement of generation of electricity by new energy in recent years comprehensively.
In recent years, the new forms of energy such as China's wind-powered electricity generation, photovoltaic are fast-developing, and the first half of the year in 2015, China's installed capacity of wind-driven power broke through 100,000,000 kilowatts, and photovoltaic installed capacity is also more than 35,000,000 kilowatts.While new forms of energy fast development, new forms of energy contradiction of dissolving is outstanding day by day, and the new forms of energy problem of rationing the power supply in indivedual area has become the main cause of restriction new forms of energy development.
New energy digestion capability calculating is the effective support to new forms of energy planning and management and running, but actual electric network runs the impact by multiple boundary condition, and every day, each moment operation of power networks all various change can occur.Therefore, need badly and propose a kind ofly both to have retained original operation of power networks characteristic and the method that can simplify that electrical network carries out calculating.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of construction method of electrical network polymerization model, greatly reducing the complexity of electrical network, effectively can improve the computational speed of new energy digestion capability.
In order to realize foregoing invention object, the present invention takes following technical scheme:
The invention provides a kind of construction method of electrical network polymerization model, said method comprising the steps of:
Step 1: subregion is carried out to electrical network;
Step 2: carry out load model polymerization, the polymerization of interconnection model and power source model polymerization in each Grid.
In described step 1, send according to new forms of energy the situation of being obstructed outside and subregion is carried out to electrical network, obtain different Grids.
In described step 1, first obtain new forms of energy according to power system operating mode and send the section that is obstructed outside, each new forms of energy send area of being obstructed outside as an independent Grid; After determining that all new forms of energy send area of being obstructed outside, residue electrical network is as a Grid.
Between different Grid, new forms of energy are sent the section that is obstructed outside and are polymerized to a section, and this section limit is the summation of the interregional original section limit of different electricity.
Described step 2 comprises the following steps:
Step 2-1: carry out the load model polymerization in Grid;
Step 2-2: carry out the interconnection model polymerization in Grid;
Step 2-3: carry out the power source model polymerization in Grid.
In described step 2-1, carry out the load model polymerization in Grid, comprising:
In Grid, all kinds of Load aggregation is a load curve, and this load curve is all load summations in Grid.
In described step 2-2, carry out the interconnection model polymerization in Grid, comprising:
Between Grid introspection, interconnection is polymerized to an interconnection, the upper limit of this interconnection transmission capacity is each bar interconnection transmission capacity upper limit aggregate-value, the lower limit of this interconnection transmission capacity is each bar interconnection transmission capacity lower limit aggregate-value, and this interconnection obtained after polymerization conveying electricity is the aggregate-value of each bar interconnection conveying electricity.
In described step 2-3, carry out the power source model polymerization in Grid, comprising:
Step 2-3-1: power supply in Grid is divided into thermoelectricity, water power, wind-powered electricity generation and photovoltaic;
Step 2-3-2: thermoelectricity and water power are polymerized respectively;
Step 2-3-3: wind-powered electricity generation and photovoltaic are polymerized respectively.
Described step 2-3-2 comprises:
(1) fired power generating unit identical with type for capacity is classified as a class, the installed capacity of similar fired power generating unit, maximum output, minimum load are identical with climbing rate, with the abbreviation of fired power generating unit type and fired power generating unit capacity sign fired power generating unit title;
(2) Hydropower Unit identical with type for capacity is classified as a class, the installed capacity of similar Hydropower Unit, maximum output, minimum load, climbing rate are identical with Constraint, with the abbreviation of Hydropower Unit type and Hydropower Unit capacity sign Hydropower Unit title.
Described step 2-3-3 comprises:
(1) according to wind-powered electricity generation theoretical power (horse-power) P in Grid twwith installed capacity of wind-driven power C in Grid wdetermine that in Grid, wind-powered electricity generation normalization is exerted oneself, and has:
P w = P t w C w - - - ( 1 )
Wherein, P wrepresent that in Grid, wind-powered electricity generation normalization is exerted oneself; P tw=P gw+ P cw, P gwrepresent wind-powered electricity generation generated output in Grid, P cwto represent in Grid that wind-powered electricity generation is rationed the power supply power;
In Grid, wind-powered electricity generation normalization is exerted oneself P wand installed capacity of wind-driven power C in Grid wfor the model parameter of wind-powered electricity generation polymerization model;
(2) according to photovoltaic theoretical power (horse-power) P in Grid tpwith photovoltaic installed capacity C in Grid pdetermine that in Grid, photovoltaic normalization is exerted oneself, and has:
P p = P t p C p - - - ( 2 )
Wherein, P prepresent that in Grid, photovoltaic normalization is exerted oneself; P tp=P gp+ P cp, P gprepresent photovoltaic generation power in Grid, P cpto represent in Grid that photovoltaic is rationed the power supply power;
In Grid, photovoltaic normalization is exerted oneself P pand photovoltaic installed capacity C in Grid pas the model parameter of photovoltaic polymerization model.
Compared with immediate prior art, technical scheme provided by the invention has following beneficial effect:
1) electrical network polymerization model construction method provided by the invention is by after being divided into multiple Grid by electrical network, carries out load model polymerization, the polymerization of interconnection model and power source model polymerization, realize the simplify processes to target grid in different Grid;
2) electrical network polymerization model construction method provided by the invention greatly reduces the complexity of electrical network on the basis retaining original operation of power networks characteristic;
3) electrical network polymerization model construction method provided by the invention can significantly improve computational speed in new energy digestion capability calculates.
Accompanying drawing explanation
Fig. 1 is the construction method flow chart of electrical network polymerization model in the embodiment of the present invention;
Fig. 2 is sub area division schematic diagram in the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
The invention provides a kind of construction method of electrical network polymerization model, calculate new forms of energy send the section that is obstructed outside according to power system operating mode, each new forms of energy are obstructed area as an independent sub area division, and each subregion other electrical networks outer are as electrical network main partition.On the basis of sub area division, be polymerized from interconnection and power supply three aspects between load, province respectively: in Load aggregation, each subregion internal loading is exerted oneself and always adds as Load aggregation model; Between province in interconnection polymerization, interconnection between the Duo Tiao province in subregion is exerted oneself and always adds interconnection polymerization model as between province.In power supply polymerization, the conventional power unit such as thermoelectricity, water power is polymerized according to capacity and machine set type, for the new forms of energy such as wind-powered electricity generation, photovoltaic, is polymerized according to the power producing characteristics of each subregion wind-powered electricity generation, photovoltaic and installed capacity; Structure electrical network polymerization model provided by the invention greatly reduces the complexity of electrical network on the basis retaining original operation of power networks characteristic, effectively can improve the computational speed of new energy digestion capability.
The invention provides a kind of construction method of electrical network polymerization model, as Fig. 1, said method comprising the steps of:
Step 1: subregion is carried out to electrical network;
Step 2: carry out load model polymerization, the polymerization of interconnection model and power source model polymerization in each Grid.
In described step 1, send according to new forms of energy the situation of being obstructed outside and subregion is carried out to electrical network, obtain different Grids.
In described step 1, (as Fig. 2) first obtains new forms of energy according to power system operating mode and sends the section that is obstructed outside, and each new forms of energy send area of being obstructed outside as an independent Grid; After determining that all new forms of energy send area of being obstructed outside, residue electrical network is as a Grid.
Between different Grid, new forms of energy are sent the section that is obstructed outside and are polymerized to a section, and this section limit is the summation of the interregional original section limit of different electricity.
Described step 2 comprises the following steps:
Step 2-1: carry out the load model polymerization in Grid;
Step 2-2: carry out the interconnection model polymerization in Grid;
Step 2-3: carry out the power source model polymerization in Grid.
In described step 2-1, carry out the load model polymerization in Grid, comprising:
In Grid, all kinds of Load aggregation is a load curve, and this load curve is all load summations in Grid.
In described step 2-2, carry out the interconnection model polymerization in Grid, comprising:
Between Grid introspection, interconnection is polymerized to an interconnection, the upper limit of this interconnection transmission capacity is each bar interconnection transmission capacity upper limit aggregate-value, the lower limit of this interconnection transmission capacity is each bar interconnection transmission capacity lower limit aggregate-value, and this interconnection obtained after polymerization conveying electricity is the aggregate-value of each bar interconnection conveying electricity.
In described step 2-3, carry out the power source model polymerization in Grid, comprising:
Step 2-3-1: power supply in Grid is divided into thermoelectricity, water power, wind-powered electricity generation and photovoltaic;
Step 2-3-2: thermoelectricity and water power are polymerized respectively;
Step 2-3-3: wind-powered electricity generation and photovoltaic are polymerized respectively.
Described step 2-3-2 comprises:
(1) fired power generating unit identical with type for capacity is classified as a class, the installed capacity of similar fired power generating unit, maximum output, minimum load are identical with climbing rate, with the abbreviation of fired power generating unit type and fired power generating unit capacity sign fired power generating unit title; The fired power generating unit Uniform Name being 100MW as type of bleeding, capacity is CQ100.
(2) Hydropower Unit identical with type for capacity is classified as a class, the installed capacity of similar Hydropower Unit, maximum output, minimum load, climbing rate are identical with Constraint, with the abbreviation of Hydropower Unit type and Hydropower Unit capacity sign Hydropower Unit title.The Hydropower Unit Uniform Name being 100MW if any regulating power (having reservoir), capacity is SK100.
Described step 2-3-3 comprises:
(1) according to wind-powered electricity generation theoretical power (horse-power) P in Grid twwith installed capacity of wind-driven power C in Grid wdetermine that in Grid, wind-powered electricity generation normalization is exerted oneself, and has:
P w = P t w C w - - - ( 1 )
Wherein, P wrepresent that in Grid, wind-powered electricity generation normalization is exerted oneself; P tw=P gw+ P cw, P gwrepresent wind-powered electricity generation generated output in Grid, P cwto represent in Grid that wind-powered electricity generation is rationed the power supply power;
In Grid, wind-powered electricity generation normalization is exerted oneself P wand installed capacity of wind-driven power C in Grid wfor the model parameter of wind-powered electricity generation polymerization model;
(2) according to photovoltaic theoretical power (horse-power) P in Grid tpwith photovoltaic installed capacity C in Grid pdetermine that in Grid, photovoltaic normalization is exerted oneself, and has:
P p = P t p C p - - - ( 2 )
Wherein, P prepresent that in Grid, photovoltaic normalization is exerted oneself; P tp=P gp+ P cp, P gprepresent photovoltaic generation power in Grid, P cpto represent in Grid that photovoltaic is rationed the power supply power;
In Grid, photovoltaic normalization is exerted oneself P pand photovoltaic installed capacity C in Grid pas the model parameter of photovoltaic polymerization model.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; those of ordinary skill in the field still can modify to the specific embodiment of the present invention with reference to above-described embodiment or equivalent replacement; these do not depart from any amendment of spirit and scope of the invention or equivalent replacement, are all applying within the claims of the present invention awaited the reply.

Claims (10)

1. a construction method for electrical network polymerization model, is characterized in that: said method comprising the steps of:
Step 1: subregion is carried out to electrical network;
Step 2: carry out load model polymerization, the polymerization of interconnection model and power source model polymerization in each Grid.
2. the construction method of electrical network polymerization model according to claim 1, is characterized in that: in described step 1, sends the situation of being obstructed outside and carries out subregion to electrical network, obtain different Grids according to new forms of energy.
3. the construction method of electrical network polymerization model according to claim 2, is characterized in that: in described step 1, and first obtaining new forms of energy according to power system operating mode sends the section that is obstructed outside, and each new forms of energy send area of being obstructed outside as an independent Grid; After determining that all new forms of energy send area of being obstructed outside, residue electrical network is as a Grid.
4. the construction method of electrical network polymerization model according to claim 3, is characterized in that: between different Grid, new forms of energy are sent the section that is obstructed outside and are polymerized to a section, and this section limit is the summation of the interregional original section limit of different electricity.
5. the construction method of electrical network polymerization model according to claim 1, is characterized in that: described step 2 comprises the following steps:
Step 2-1: carry out the load model polymerization in Grid;
Step 2-2: carry out the interconnection model polymerization in Grid;
Step 2-3: carry out the power source model polymerization in Grid.
6. the construction method of electrical network polymerization model according to claim 5, is characterized in that: in described step 2-1, carries out the load model polymerization in Grid, comprising:
In Grid, all kinds of Load aggregation is a load curve, and this load curve is all load summations in Grid.
7. the construction method of electrical network polymerization model according to claim 5, is characterized in that: in described step 2-2, carries out the interconnection model polymerization in Grid, comprising:
Between Grid introspection, interconnection is polymerized to an interconnection, the upper limit of this interconnection transmission capacity is each bar interconnection transmission capacity upper limit aggregate-value, the lower limit of this interconnection transmission capacity is each bar interconnection transmission capacity lower limit aggregate-value, and this interconnection obtained after polymerization conveying electricity is the aggregate-value of each bar interconnection conveying electricity.
8. the construction method of electrical network polymerization model according to claim 5, is characterized in that: in described step 2-3, carries out the power source model polymerization in Grid, comprising:
Step 2-3-1: power supply in Grid is divided into thermoelectricity, water power, wind-powered electricity generation and photovoltaic;
Step 2-3-2: thermoelectricity and water power are polymerized respectively;
Step 2-3-3: wind-powered electricity generation and photovoltaic are polymerized respectively.
9. the construction method of electrical network polymerization model according to claim 8, is characterized in that: described step 2-3-2 comprises:
(1) fired power generating unit identical with type for capacity is classified as a class, the installed capacity of similar fired power generating unit, maximum output, minimum load are identical with climbing rate, with the abbreviation of fired power generating unit type and fired power generating unit capacity sign fired power generating unit title;
(2) Hydropower Unit identical with type for capacity is classified as a class, the installed capacity of similar Hydropower Unit, maximum output, minimum load, climbing rate are identical with Constraint, with the abbreviation of Hydropower Unit type and Hydropower Unit capacity sign Hydropower Unit title.
10. the construction method of electrical network polymerization model according to claim 8, is characterized in that: described step 2-3-3 comprises:
(1) according to wind-powered electricity generation theoretical power (horse-power) P in Grid twwith installed capacity of wind-driven power C in Grid wdetermine that in Grid, wind-powered electricity generation normalization is exerted oneself, and has:
P w = P t w C w - - - ( 1 )
Wherein, P wrepresent that in Grid, wind-powered electricity generation normalization is exerted oneself; P tw=P gw+ P cw, P gwrepresent wind-powered electricity generation generated output in Grid, P cwto represent in Grid that wind-powered electricity generation is rationed the power supply power;
In Grid, wind-powered electricity generation normalization is exerted oneself P wand installed capacity of wind-driven power C in Grid wfor the model parameter of wind-powered electricity generation polymerization model;
(2) according to photovoltaic theoretical power (horse-power) P in Grid tpwith photovoltaic installed capacity C in Grid pdetermine that in Grid, photovoltaic normalization is exerted oneself, and has:
P p = P t p C p - - - ( 2 )
Wherein, P prepresent that in Grid, photovoltaic normalization is exerted oneself; P tp=P gp+ P cp, P gprepresent photovoltaic generation power in Grid, P cpto represent in Grid that photovoltaic is rationed the power supply power;
In Grid, photovoltaic normalization is exerted oneself P pand photovoltaic installed capacity C in Grid pas the model parameter of photovoltaic polymerization model.
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