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2022 electrician cup a question high proportion wind power system energy storage operation and configuration analysis ideas
2022-07-07 04:05:00 【Xiaolei mathematical modeling_】
*A topic Energy storage operation and configuration analysis of high proportion wind power system *
2022 Electrician Cup A Question: how to obtain ideas for energy storage operation and configuration analysis of high proportion wind power system : https://jq.qq.com/?_wv=1027&k=BZgDWH1Y
2022 Electrician Cup A Question: how to obtain ideas for energy storage operation and configuration analysis of high proportion wind power system : https://jq.qq.com/?_wv=1027&k=BZgDWH1Y
2022 Electrician Cup A Question: how to obtain ideas for energy storage operation and configuration analysis of high proportion wind power system : https://jq.qq.com/?_wv=1027&k=BZgDWH1Y
“ Carbon neutralization ” Driven by the goal, the future power system will be a high proportion of renewable energy power system , The strong random fluctuation of renewable energy output power leads to the difficulty of real-time power balance in system operation ; Energy storage is considered to be an effective means to ensure the real-time power balance of the system , Because the cost of energy storage is relatively expensive , Using energy storage to balance system power will increase system operation cost ; Take the high proportion wind power system as an example , To explore the “ Supply side ” The low-carbon transformation has great impact on the economy of power system operation 、 Reliability impact .
The system to be studied includes thermal power 、 Wind power 、 Energy storage and load , Thermal power unit 3 platform 、 The installed capacity 1050MW; Wind power one day 、 Load normalized power (1.0p.u. Wind power corresponds to its installed capacity ,1.0p.u. The load corresponds to the maximum load power ) See Annex for data 1, Wind power penetration rate ( The ratio of maximum wind power to maximum load power ) Increasing may cause the system to abandon wind 、 Loss of load , Affect the power balance of the system .
Definition : Unit power supply cost of the system = Total power generation cost of the system / Total load power of the system , Total cost of power generation = Thermal power costs + Wind power costs + Energy storage cost + Loss of abandoned wind + Loss of load , among :
Thermal power costs include operating costs 、 Carbon capture costs , The operation cost of thermal power consists of operation and maintenance cost and coal consumption cost of power generation , The relationship between coal consumption for power generation and its output :F = aP2 + bP + c ,F Is the coal consumption of the unit (kg/h),P Contribute to the unit /MW; The operation and maintenance cost is calculated according to 0.5 Times the coal consumption
Cost considerations , Carbon capture cost depends on carbon emissions and carbon capture unit price , Relevant parameters of thermal power units
The figures are shown in the attached table 1 Shown , The price of power coal is 700 element /t.
The wind power cost only considers the operation and maintenance cost , Relevant parameters are shown in the attached table 2.
The energy storage cost is determined by the investment cost 、 Composition of operation and maintenance costs , Relevant parameters are shown in the attached table 3. notes : When calculating the daily cost , The investment cost needs to be amortized to every day , The average daily investment cost = Total investment cost / Service life /365 God .
The loss of abandoned wind is calculated as 0.3 element /kWh Calculation , Loss of load shall be calculated as per 8 element /kWh Calculation .
Basic questions :
Assume the maximum daily load power of the system 900MW, The unit carbon capture costs are 0 element /t、60 element
/t、80 element /t、100 element /t, Perturbed wind power permeability , Analyze and calculate the following problems :
\1. No wind power is connected , Thermal power operates at minimum cost , Draw the unit daily generation plan curve , Calculate the unit power supply cost of the system , Fill in the results in the table 1 Corresponding column ( Keep three significant digits ).
\2. Wind power installation 300MW、 Substitute unit 3 when , What happens to the power balance of the system ? Abandon wind power
How much ? In this scenario , To reduce wind abandonment without loss of load , How much can the installed capacity of wind power access be reduced ?
\3. Wind power installation 600MW、 Substitute unit 2 when , What happens to the power balance of the system ? In this scenario , In order not to lose load , How much can the wind power access capacity be increased ?
\4. In view of the above 2-3 Wind power alternative scenario , Consider the above 4 The cost of carbon capture , The system supplies power at the lowest power generation cost , Calculate the unit power supply cost of the system , And fill the relevant calculation results in the table 2、3.
\5. Wind power installation 900MW、 Substitute unit 2、3 when , How much power is lost under load ? In order not to lose load , What is the minimum energy storage capacity that needs to be configured ( Charging and discharging efficiency of energy storage 90%)? Consider the cost of energy storage 、 Unit carbon capture cost ( take 60 element /t), How much is the unit power supply cost of the system ?
\6. When the load power is constant , Try to analyze what challenges the increasing replacement capacity of wind power brings to the reliable power supply of the system ? To ensure reliable power supply , What changes have taken place in the unit power supply cost of the system ? Combine the above calculation results for quantitative analysis .
Extended questions :
\7. For attachments 2 Fifteen day load power shown ( Maximum 1200MW)、 Wind power ( The installed capacity 1200MW), Wind power replaces thermal power units 2、3 scenario , What is the problem with the system power balance ? Please design possible power balance solutions , The feasibility and effectiveness of the scheme are discussed .
surface 1 The proportion of wind power is 0 Statistics of relevant indicators of the system
* Carbon capture costs **( element /t)* | * Thermal power operation cost **( Ten thousand yuan )* | * Carbon capture costs **( Ten thousand yuan )* | * Total generation cost **( Ten thousand yuan )* | * Unit power supply cost **( Ten thousand yuan )* |
---|---|---|---|---|
*0* | ||||
*60* | ||||
*80* | ||||
*100* |
surface 2 Wind power installation 300MW Substitute unit 3 Statistics of relevant indicators of the system
* The carbon capture unit is * | * Operation of thermal motor unit * | * Carbon capture costs * | * Wind power operation and maintenance costs * | * Loss of abandoned wind * | * Loss of load * | * Unit power supply cost * | ||
---|---|---|---|---|---|---|---|---|
* Ben ( element /t)* | * Line cost / Ten thousand yuan * | */ Ten thousand yuan * | */ Ten thousand yuan * | Abandoned wind power /MWh | Loss of abandoned wind / Ten thousand yuan | Loss of load capacity /MWh | Loss of load / Ten thousand yuan | *( element /kWh)* |
*0* | ||||||||
*60* | ||||||||
*80* | ||||||||
*100* |
surface 3 Wind power installation 600MW Substitute unit 2 Statistics of relevant indicators of the system
* The carbon capture unit is * | * Operation of thermal motor unit * | * Carbon capture costs * | * Wind power operation and maintenance costs * | * Loss of abandoned wind * | * Loss of load * | * Unit power supply cost * | ||
---|---|---|---|---|---|---|---|---|
* Ben ( element /t)* | * Line cost / Ten thousand yuan * | */ Ten thousand yuan * | */ Ten thousand yuan * | Abandoned wind power /MWh | Loss of abandoned wind / Ten thousand yuan | Loss of load capacity /MWh | Loss of load / Ten thousand yuan | *( element /kWh)* |
*0* | ||||||||
*60* | ||||||||
*80* | ||||||||
*100* |
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