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New energy active emergency control method, readable storage medium and equipment

An emergency control, new energy technology, applied in the direction of reducing/preventing power oscillation, power generation prediction in AC network, single-grid parallel feeding arrangement, etc. The effect of orderly consumption and ensuring safe and stable operation

Pending Publication Date: 2022-01-14
NARI NANJING CONTROL SYST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Judging from the current active power control of grid-connected new energy, although many new energy stations have the ability to accept remote control, due to the lack of experience in active power control of new energy and the maximum utilization of wind and power resources, the active power control of new energy is still limited. In the peak shaving control stage, the participation of new energy in emergency control of the power grid has not yet been involved

Method used

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  • New energy active emergency control method, readable storage medium and equipment
  • New energy active emergency control method, readable storage medium and equipment
  • New energy active emergency control method, readable storage medium and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0083] Such as figure 1 As shown, a new energy active emergency control method comprises the following steps:

[0084] 1) Obtaining the output reduction control instruction, the output reduction control instruction is an instruction issued when the frequency deviation of the power grid in the control area where the new energy equivalent unit is located is greater than the preset value determined according to the grid monitoring data;

[0085] 2) According to the power drop control command, the down-regulation capacity of each new energy station of the new energy equivalent unit is counted, and the emergency power drop distribution is carried out according to the statistical results, and the distribution result is sent to each new energy station for power control .

[0086] In step 1), such as figure 2 as shown,

[0087] 11) In the AGC application of the provincial dispatching center (hereinafter referred to as provincial dispatching), first establish the conventional load ...

Embodiment 2

[0119] Embodiment 2 is different from Step 2 of Embodiment 1 in that,

[0120] 3) According to the obtained grid monitoring data, it is determined that the grid is operating normally but the new energy transmission line fails and the delivery capacity of the transmission section decreases, the new energy active power automatic control system independently completes the automatic control of the new energy station active power.

[0121] 31) When the transmission line fails, the online security and stability calculation module of the smart grid dispatching control system will give the new limit value of each section under the new power grid state and whether the limit is exceeded in real time. The smart grid dispatching control system includes the normal load frequency Control model and new energy automatic control system. The new energy active power automatic control system scans the real-time active value and section limit value of the new energy transmission section in real ti...

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Abstract

The invention discloses a new energy active emergency control method, a readable storage medium and equipment. The method comprises the steps that: the statistics of the downward adjustment capability of new energy stations with different power generation priorities is carried out when the frequency of a power grid is abnormal and the power of the power grid needs to be reduced emergently, and the new energy stations are controlled according to the power generation priorities from low to high; and when the new energy transmission section of the power grid is abnormal, and consequently, the transmission section is out of limit, a new energy active power automatic control system implements active power emergency control on the new energy stations according to the section out-of-limit degree and the downward adjustment capability of the new energy stations with different power generation priorities. With the method adopted, differential control over active power of the new energy stations is achieved, and safe and orderly consumption of new energy is promoted while safe and stable operation of the power grid is guaranteed.

Description

technical field [0001] The invention relates to a new energy active power emergency control method, a readable storage medium and equipment, and belongs to the technical field of power system active power control. Background technique [0002] New energy power generation is currently the renewable energy power generation method with the most mature technology and the best economic benefits except hydropower. After large-scale new energy is connected to the grid, the randomness, volatility and intermittent characteristics of new energy will gradually affect the safe and stable operation of the power grid. With the start of construction of several 10-million-kilowatt wind power bases in China, it is gradually becoming more difficult for the power grid to fully absorb new energy under the premise of ensuring safe and stable operation and active power control performance. higher requirement. [0003] According to the requirements of the national new energy policy, after the ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/48H02J3/24
CPCH02J3/004H02J3/381H02J3/48H02J3/24H02J2203/20H02J2300/24H02J2300/28H02J2300/40Y02E10/56
Inventor 吴继平孙荣富涂孟夫王靖然于昌海吴林林昌力阎博曹荣章孙雅旻徐瑞刘爱梅滕贤亮郭斌琪张小白
Owner NARI NANJING CONTROL SYST
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