CN106779207B - New energy consumption economical evaluation method considering power generation and start-up costs - Google Patents

New energy consumption economical evaluation method considering power generation and start-up costs Download PDF

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CN106779207B
CN106779207B CN201611123916.1A CN201611123916A CN106779207B CN 106779207 B CN106779207 B CN 106779207B CN 201611123916 A CN201611123916 A CN 201611123916A CN 106779207 B CN106779207 B CN 106779207B
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thermal power
new energy
calculating
power generation
coal consumption
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CN106779207A (en
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张楠
王伟胜
刘纯
黄越辉
王跃峰
礼晓飞
高云峰
许晓艳
马烁
许彦平
李湃
孙力勇
金鹏
王晶
潘霄峰
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
State Grid Liaoning Electric Power Co Ltd
Shenyang Power Supply Co of State Grid Liaoning Electric Power Co Ltd
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
State Grid Liaoning Electric Power Co Ltd
Shenyang Power Supply Co of State Grid Liaoning Electric Power Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/04—Forecasting or optimisation specially adapted for administrative or management purposes, e.g. linear programming or "cutting stock problem"
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/06—Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
    • G06Q10/063—Operations research, analysis or management
    • G06Q10/0637—Strategic management or analysis, e.g. setting a goal or target of an organisation; Planning actions based on goals; Analysis or evaluation of effectiveness of goals
    • G06Q10/06375—Prediction of business process outcome or impact based on a proposed change
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • G06Q50/06—Electricity, gas or water supply
    • 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
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/80—Management or planning
    • Y02P90/82—Energy audits or management systems therefor
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • 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

Abstract

The invention provides a new energy consumption economical evaluation method considering power generation and startup cost, which comprises the following steps: calculating new energy under installed condition, actual output sequence of thermal power and start-stop condition of thermal power by taking maximum consumption of new energy as optimization target, and calculating coal consumption c generated by thermal power generation 1 Calculating the starting coal consumption c of thermal power generating unit 2 Calculating the comprehensive coal consumption rate eta s Calculating the power generation cost pr of each degree of thermal power e And calculating the power generation cost increased by the new energy. The technical scheme provided by the invention can objectively evaluate the influence of the new energy consumption on the operation economy, provides a technical basis for decision making of new energy consumption, can meet the maximum consumption of the new energy, and also gives consideration to the coal consumption rate and the operation cost of the thermal power generating unit to the greatest extent.

Description

New energy consumption economical evaluation method considering power generation and start-up costs
Technical Field
The invention belongs to the field of new energy, and particularly relates to a new energy consumption economical evaluation method considering power generation and startup cost.
Background
Energy and environmental problems have been the focus of attention worldwide. Increasing importance is placed on environmental protection, and people focus on the new energy field. The new energy sources such as wind power, photovoltaic and the like have increasingly prominent effects on the aspects of reducing environmental pollution, adjusting energy structures and the like. With the continuous access of new energy to the power system, the random and fluctuation characteristics of the new energy bring new challenges to the dynamic economic dispatch of the traditional power system, the new energy is generally equivalent to a generator which only generates electricity without generating cost in the past analysis and calculation, and the additional requirements of the random and fluctuation characteristics of the new energy on the flexibility of the conventional power supply are not considered, so that the objectivity of the analysis result of the dynamic economic dispatch is influenced.
The 'new energy production simulation software' of the common tool for calculating the new energy consumption capability takes the system load and the new energy power generation output as time sequences which change along with time, considers the time sequence change characteristics of the power grid operation mode, and sequentially simulates various conditions of power supply operation and power generation balance under the given operation boundary condition of the power system to finally obtain the new energy power quantity which can be consumed by the power grid under a certain installed capacity.
The optimization goal of the new energy production simulation is the maximum consumption of the new energy, but the operation economy is not realized, the obtained optimization result is that the thermal power unit is started and stopped frequently, the coal consumption rate is increased, the cost is increased, and no accurate calculation method for the increased cost exists at present.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a new energy consumption economical evaluation method considering the power generation and start-up costs, which quantitatively calculates the power generation cost under different new energy installation conditions and provides a reference basis for preferentially consuming new energy.
The new energy consumption economical evaluation method considering the electricity generation and start-up costs is characterized by comprising the following steps:
I. calculating new energy, an actual output sequence of thermal power and a thermal power starting and stopping condition under the installed condition by taking the maximum consumption of the new energy as an optimization target;
II. Calculating the coal consumption c of thermal power generation 1 ；
III, calculating the starting coal consumption c of the thermal power generating unit 2 ；
IV, calculating the comprehensive coal consumption rate eta s ；
V, calculating thermal power generation cost pr e ；
VI, determining the power generation cost increased by the new energy.
Further, the step II includes: calculating the coal consumption c of the thermal power generation according to the following formula 1 ：
Wherein P is i,j The output of the thermal power unit j in the period i is eta i,j The coal consumption rate of the thermal power generating unit j in the period i is obtained.
Further, the step III includes: calculating the starting coal consumption c of the thermal power generating unit according to the following formula 2 ：
Wherein m is j The number of times of starting the thermal power unit j in the whole year is c qiji The cost for starting the machine is reduced to the coal consumption.
Further, the step IV includes: calculating the comprehensive coal consumption rate eta according to the following method s ：
Wherein c 1 Coal consumption for thermal power generation c 2 For the coal consumption of starting the thermal power unit, P i,j The output of the thermal power generating unit j in the period i is obtained.
Further, the step V includes: calculating the thermal power generation cost pr according to the following formula e ：
pr e ＝η s *pr c
Wherein eta s For the comprehensive coal consumption rate, pr c Is the unit price of the standard coal.
Further, the step VI includes: calculating the power generation cost delta pr for absorbing new energy e ：
Δpr e ＝pr e -pr e(0)
Wherein, the liquid crystal display device comprises a liquid crystal display device,pr e for the power generation cost per degree of thermal power, pr e(0) And the thermal power generation cost is 0 when the new energy installation is realized.
An apparatus for use in the method, the apparatus comprising:
the optimizing target module calculates new energy, actual output sequence of thermal power and starting and stopping conditions of thermal power under the installed condition by taking the maximum consumption of the new energy as an optimizing target;
the first calculation module calculates the coal consumption c of thermal power generation 1 And coal consumption c of starting up of thermal power generating unit 2 ；
The second calculation module calculates the comprehensive coal consumption rate eta s ；
A third calculation module for calculating the thermal power generation cost pr e ；
And the fourth calculation module is used for calculating the power generation cost increased by the new energy.
Compared with the closest prior art, the technical scheme provided by the invention has the following beneficial effects:
the technical scheme provided by the invention can objectively evaluate the influence of the new energy consumption on the operation economy, provides a technical basis for decision making of new energy consumption, can meet the maximum consumption of the new energy, and also gives consideration to the coal consumption rate and the operation cost of the thermal power generating unit to the greatest extent.
Drawings
FIG. 1 is a flow chart of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
The invention relates to a new energy consumption economical evaluation method considering coal consumption and starting cost. The specific implementation steps are as follows:
(1) Calculating the actual output sequence of various power supplies
Firstly, based on actual data of a certain province, the new energy installation is increased to a certain planning value from 0 to a certain step length to form a plurality of calculation cases, and new energy and thermal power actual output sequences under different new energy installation conditions and thermal power start-up and shutdown conditions are calculated by adopting 'new energy production simulation software' with maximum new energy consumption as an optimization target.
(2) Calculating the coal consumption c generated by thermal power generation 1
Knowing the coal consumption rate eta corresponding to different thermal power output, the calculation formula of the coal consumption generated by thermal power generation is as follows:
p in the formula i,j Represents the output, eta of the j-th thermal power unit in the i period i,j Representing the coal consumption rate of the j-th thermal power generating unit in the period i, c 1 Representing the coal consumption of all thermal power generating units all the year round.
(3) Calculating the starting coal consumption c of thermal power generating unit 2
M is in j Represents the annual startup times of the j-th thermal power generating unit, c qiji Representing the coal consumption with reduced one-time startup cost.
(4) Calculating the comprehensive coal consumption rate eta s
(5) Calculating the power generation cost of each degree of thermal power
pr e ＝η s *pr c
In the formula pr e Represents the power generation cost per degree of thermal power, pr c Indicating the unit price of the standard coal.
(6) Calculating the power generation cost increased by the new energy
Δpr e ＝pr e -pr e(0)
In the formula pr e(0) Represents the thermal power generation when the new energy installation is 0And (5) electric cost.
Therefore, the influence of the new energy consumption on the running economy of the thermal power can be quantitatively described.
The device used in the method comprises:
the optimizing target module calculates new energy, actual output sequence of thermal power and starting and stopping conditions of thermal power under the installed condition by taking the maximum consumption of the new energy as an optimizing target;
the first calculation module calculates the coal consumption c of thermal power generation 1 And coal consumption c of starting up of thermal power generating unit 2 ；
The second calculation module calculates the comprehensive coal consumption rate eta s ；
A third calculation module for calculating the thermal power generation cost pr e ；
And the fourth calculation module is used for calculating the power generation cost increased by the new energy.
The specific calculation method of each module may be referred to the description of the embodiment of the method, and will not be repeated here.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the scope of the claims.

Claims (2)

1. The new energy consumption economical evaluation method considering the electricity generation and start-up costs is characterized by comprising the following steps:
I. calculating new energy, an actual output sequence of thermal power and a thermal power starting and stopping condition under the installed condition by taking the maximum consumption of the new energy as an optimization target;
II. Calculating the coal consumption c of thermal power generation 1 ；
III, calculating the starting coal consumption c of the thermal power generating unit 2 ；
IV, calculating the comprehensive coal consumption rate eta s ；
V, calculating thermal power generation cost pr e ；
VI, determining the power generation cost increased by the new energy consumption;
the step II comprises the following steps: calculating the coal consumption c of the thermal power generation according to the following formula 1 ：
Wherein P is i,j The output of the thermal power unit j in the period i is eta i,j The coal consumption rate of the thermal power unit j in the period i is the coal consumption rate of the thermal power unit j in the period i;
the step III comprises the following steps: calculating the starting coal consumption c of the thermal power generating unit according to the following formula 2 ：
Wherein m is j The number of times of starting the thermal power unit j in the whole year is c qiji The coal consumption is reduced for one-time cost of starting;
the step IV comprises the following steps: calculating the comprehensive coal consumption rate eta according to the following method s ：
Wherein c 1 Coal consumption for thermal power generation c 2 For the coal consumption of starting the thermal power unit, P i,j The output of the thermal power unit j in the period i is obtained;
the step V comprises the following steps: calculating the thermal power generation cost pr according to the following formula e ：
pr e ＝η s *pr c
Wherein eta s For the comprehensive coal consumption rate, pr c The unit price of the standard coal;
the step VI comprises the following steps: calculating the power generation cost delta pr for absorbing new energy e ：
Δpr e ＝pr e -pr e(0)
Wherein pr (pr) e For the power generation cost per degree of thermal power, pr e(0) And the thermal power generation cost is 0 when the new energy installation is realized.
2. The apparatus for use in the method of claim 1, wherein the apparatus comprises:
the optimizing target module calculates new energy, actual output sequence of thermal power and starting and stopping conditions of thermal power under the installed condition by taking the maximum consumption of the new energy as an optimizing target;
the first calculation module calculates the coal consumption c of thermal power generation 1 And coal consumption c of starting up of thermal power generating unit 2 ；
The second calculation module calculates the comprehensive coal consumption rate eta s ；
A third calculation module for calculating the thermal power generation cost pr e ；
And the fourth calculation module is used for calculating the power generation cost increased by the new energy.
CN201611123916.1A 2016-12-08 2016-12-08 New energy consumption economical evaluation method considering power generation and start-up costs Active CN106779207B (en)

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CN107634544A (en) * 2017-09-19 2018-01-26 广东省粤电集团有限公司 The dynamic power control method and system of fired power generating unit
CN108108995A (en) * 2017-11-15 2018-06-01 中国电力科学研究院有限公司 A kind of fired power generating unit price quoting method and device based on new energy power prediction
CN114285089B (en) * 2021-11-29 2023-08-29 中国华能集团清洁能源技术研究院有限公司 Method and system for optimizing start-stop of thermal power generating unit in wind, light and fire storage system

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