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Transmitting-end power system stochastic production simulation method in consideration of energy discarding constraint and application

A technology of power system and simulation method, applied in wind power generation, information technology support system, communication network with energy trade/energy transmission authority, etc., can solve the problems of non-fossil energy sustainable development, non-fossil energy waste, etc. Achieve the effect of ensuring safe and stable operation, improving peak shaving capability, and stabilizing fluctuations

Active Publication Date: 2019-04-05
国家电网公司西南分部 +2
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Problems solved by technology

Energy abandonment not only causes a lot of waste of non-fossil energy, but also brings many blows to the sustainable development of non-fossil energy

Method used

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  • Transmitting-end power system stochastic production simulation method in consideration of energy discarding constraint and application
  • Transmitting-end power system stochastic production simulation method in consideration of energy discarding constraint and application
  • Transmitting-end power system stochastic production simulation method in consideration of energy discarding constraint and application

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Embodiment

[0115] In this embodiment, the stochastic production simulation method of the power system considering multi-type power sources participating in peak regulation is applied to an actual H regional power grid in my country in a certain level year, and the reliability indexes and production costs of nuclear power units and various types of hydropower units participating in peak regulation are calculated. index. In this year, the total installed capacity of regional H power grid was 372,598MW, among which the installed capacity of coal-fired power plants was 227,751MW, accounting for 61.3%, the installed capacity of hydropower was 8,062MW, accounting for 2.16%; the installed capacity of nuclear power was 35,724MW, accounting for 9.5%, and the maximum load was 284,800MW. Part of the calculation data is set as follows: the coal price is 560 yuan / t, the gas price is 4000 yuan / t, the environmental cost of coal-fired units is 101.246 yuan / MWh, the environmental cost of gas-fired units is...

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Abstract

The invention relates to a transmitting-end power system stochastic production simulation method in consideration of energy discarding constraint and application. The stochastic production simulationmethod comprises the following steps: 1) acquiring an annual load curve, removing a nuclear power annual output curve from the annual load curve, obtaining a continuous load curve, and dividing the continuous load curve into three stages including a base load, a waist load and a peak load according to an annual load level; 2) establishing an equivalent electric quantity function according to the continuous load curve; 3) according to the equivalent electric quantity, achieving the output control of a thermal power unit and a hydropower unit at different stages; and 4) in consideration of the quotation and the energy discarding constraint of clean energy, dynamically adjusting the output states of the clean energy and the thermal power unit, and obtaining the stochastic production simulation data of a power system. Compared with the prior art, the method uses the disposable power generation capacity of the clean energy, such as solar power and wind power, as conventional power to participate in the peak regulation of the power system, and ensures the minimum environmental pollution of the system.

Description

technical field [0001] The invention relates to the technical field of power system planning and operation control, in particular to a random production simulation method and application of a power system at a sending end considering energy abandonment constraints. Background technique [0002] Power system stochastic production simulation is one of the basic analysis tools for power system planning and operation. It calculates the power generation, system production cost and reliability index. Traditionally, nuclear power units do not participate in grid peak regulation, not because of unit design, but because nuclear fuel costs are high and the proportion of nuclear power is relatively small. With the development and construction of nuclear power, wind power and photovoltaic power generation, it will be difficult to meet the needs of power grid load changes only by thermal power and pumped storage units for peak regulation. It is necessary for nuclear power units to parti...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/24H02J3/46
CPCH02J3/008H02J3/24H02J3/46H02J2203/20Y04S10/50
Inventor 魏明奎路亮周全程浩忠柳璐蔡绍荣江栗袁杨陈佩华张程铭
Owner 国家电网公司西南分部
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