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Extra-high voltage DC receiving end grid spinning reserve computing and data interaction method

A spinning reserve capacity, UHV DC technology, applied in AC network circuits, circuit devices, single-grid parallel feeding arrangements, etc. and other problems to achieve the effect of ensuring safe and stable operation

Inactive Publication Date: 2018-09-28
STATE GRID CORP OF CHINA +2
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the continuous growth of power demand and the improvement of power quality requirements, the traditional calculation method of power grid spinning reserve capacity is no longer applicable and cannot meet the constraints of power grid sections
The traditional reserve capacity calculation method only considers the balance of power generation and load, and ignores the section constraints and regional tie line constraints on the transmission network. The calculation of rotating reserve capacity is not accurate enough. The transfer of spinning reserve capacity, that is, the actual reserve capacity is usually lower than the reserve capacity calculated by the traditional calculation method, which has a significant impact on the arrangement of the spinning reserve capacity of the power grid
[0004] In addition, the existing patents on reserve capacity are mainly aimed at the research on the configuration method of reserve capacity or the optimization of reserve capacity considering the influence of new energy power generation, such as CN 104362617 B, CN 104821581 A, CN 104701890A, CN 106058920 A and CN 102055187 A, but in actual project implementation, the calculation method and related data exchange method of power grid spinning reserve capacity are rarely mentioned

Method used

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  • Extra-high voltage DC receiving end grid spinning reserve computing and data interaction method
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  • Extra-high voltage DC receiving end grid spinning reserve computing and data interaction method

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Embodiment Construction

[0079] 1. Calculation principles

[0080] 1. The standby capacity of the UHVDC receiving-end power grid shall include but not limited to the following categories of standby capacity:

[0081] 1) According to the time dimension: the reserve capacity that can be called out in m minutes, usually refers to the reserve capacity that can be called out in 10 minutes or 30 minutes;

[0082] 2) By unit type: the corresponding standby capacity of different types of units;

[0083] 3) By grid partition: the corresponding reserve capacity of different grid partitions.

[0084] In addition, calculation of reserve capacity by dispatch jurisdiction, by geographic area, and other categories can also be considered.

[0085] 2. The unit status is divided into grid-connected operation and shutdown status, and only the standby capacity of the grid-connected operating unit is considered.

[0086] 3. The principle of reserve capacity calculation is "units first, then constraints, and local areas...

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Abstract

The invention relates to power system scheduling automation, is suitable for province-level and the above control mechanisms of the State Grid Corporation of China system, and specifically relates toan extra-high voltage DC receiving end grid spinning reserve computing and data interaction method. The method specifically comprises the following steps: (1) unit forward spinning reserve margin computation; (2) fossil power generation unit spinning reserve capacity computation; (3) hydroelectric pumped storage unit spinning reserve capacity computation; (4) spinning reserve capacity computationin consideration of local grid section constraint; (4) spinning reserve capacity computation in inter-province tie line constraint; (6) spinning reserve capacity computation of each grid partition; (7) spinning reserve capacity computation in inter-partition section constraint; (8) section constraint checking; and (9) total spinning reserve computation in consideration of grid section constraint.

Description

technical field [0001] The invention relates to the dispatching automation of the power system, which is suitable for the provincial-level and above-level control agencies of the State Grid Corporation of China, and specifically relates to a method for calculating the rotating reserve capacity of an UHV DC receiving-end power grid and for data interaction. Background technique [0002] A certain amount of spinning reserve capacity reserved by the power grid is the basis for safe and stable operation of the power grid, ensuring that the power system can smoothly transition to a new stable operating state when it is disturbed within a certain range. [0003] With the continuous growth of power demand and the improvement of power quality requirements, the traditional calculation method of power grid spinning reserve capacity is no longer applicable and cannot meet the constraints of power grid sections. The traditional reserve capacity calculation method only considers the bala...

Claims

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Application Information

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IPC IPC(8): H02J3/46
CPCH02J3/46H02J2203/20
Inventor 王轶禹鄢发齐窦建中徐玮武力王珅李增辉汪旸江保锋尚学伟张波余建明翟勇刘姗
Owner STATE GRID CORP OF CHINA
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