Control method of new energy power system in emergency control domain operation mode

A technology of power system and operation mode, which is applied to the control field of new energy power system under the operation mode of emergency control domain, can solve the problems such as the substitution effect of wind power generation on primary energy without considering the peak-shaving cost of the unit, and achieve a good economic control strategy , the effect of reducing damage

Active Publication Date: 2022-07-22
STATE GRID LIAONING ELECTRIC POWER RES INST +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Existing technology 2 comprehensively considers many operating constraints of the unit under the date scheduling time scale, and the unit response capability constraints in the extreme case of wind power uncertainty affecting peak shaving. Actual control constraints, but did not consider the unit peaking cost and the substitution effect of wind power on primary energy, and how to quantify the cost of wind power for the system

Method used

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  • Control method of new energy power system in emergency control domain operation mode
  • Control method of new energy power system in emergency control domain operation mode
  • Control method of new energy power system in emergency control domain operation mode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] When a new energy power system runs to the emergency control domain, the timing starts from the time the system enters the emergency domain, t=0s, 1s, ... 378s, until the system state exits the emergency domain.

[0044] Step 1: Data Acquisition

[0045] Step 1.1: Quantitative collection, temperature collection for the nuclear power area, wind power area, and photovoltaic area, collecting the area of ​​the nuclear power unit Sy=13m2, the area of ​​the wind power unit Ry=504m2, the area of ​​the photovoltaic unit Zy=2.56×104m2, Unit cost of power generation M S =0.235, the unit cost of wind power generation M H =0.45, the unit cost of photovoltaic power generation M P=2.5. When entering the emergency zone, the total power generation of nuclear power units S=65×104kw, the total power generation of wind turbines H=45×103kw, the total power generation of photovoltaic units Z=9×103kw, the rated power of the unit PW=654×103kw, And parameters such as the load power Pj=8×103...

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Abstract

The present invention provides a control method for an emergency control domain of a power system. In the operating range of the system emergency control domain, the combined output of the system units is in an unadjustable emergency neighborhood state. According to the dispatch plan, the gradual source abandonment command is corrected during the operation process, and the control strategy is determined according to the influence factors such as the energy price. The control technology can be made more reasonable. When the system load is reduced to a certain extent, the strategy of abandoning core, wind and light is optimized to achieve reasonable control.

Description

technical field [0001] The invention belongs to the technical field of renewable energy power generation and new energy power grid, and particularly relates to a control method of a new energy power system in an emergency control domain operation mode. Background technique [0002] The current control strategy used in the power system is still less than the sum of the minimum output of hydropower and thermal power, the output of wind power, photovoltaic power, and nuclear power in the system after the total system load plus the power storage and heat storage capacity in the system. The form of the hop function limits the output of wind, light and nuclear. Although this simple control method can achieve the total active power balance of the power grid at a specific time node, it is easy to cause system power and frequency oscillations, and even large-scale voltage stability problems when the new energy output fluctuates uncertainly. [0003] The invention aims at the limit o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00H02J3/46G06Q10/06G06Q50/06
CPCH02J3/382H02J3/383H02J3/386H02J3/00H02J3/46G06Q10/06312G06Q50/06H02J3/001H02J2203/20Y04S10/50
Inventor 葛维春张明悦李家珏王顺江高凯葛延峰滕云苏安龙李铁罗桓桓
Owner STATE GRID LIAONING ELECTRIC POWER RES INST
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