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Ultra-high-voltage direct-current fault scheduling method based on aggregated constant-temperature control load

An ultra-high voltage DC, constant temperature control technology, applied in the direction of AC network voltage adjustment, AC network circuit, power transmission AC network, etc., to achieve the effect of increasing the total dispatching capacity, reducing the total dispatching cost, and improving the operation reliability.

Active Publication Date: 2019-02-19
STATE GRID ZHEJIANG ELECTRIC POWER +2
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  • Claims
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Problems solved by technology

However, in the face of the power market reform, in the case of system emergency, how to use the constant temperature control load combined with the traditional unit for optimal scheduling still needs further research

Method used

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  • Ultra-high-voltage direct-current fault scheduling method based on aggregated constant-temperature control load
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  • Ultra-high-voltage direct-current fault scheduling method based on aggregated constant-temperature control load

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Embodiment Construction

[0048] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0049] Such as figure 1 Shown, the present invention comprises the following steps:

[0050] S01: Based on the failure probability of UHV components, establish a UHV transmission power reliability model;

[0051] SO2: Based on the electrothermal characteristics, the individual dispatching capacity modeling of the constant temperature control load is carried out;

[0052]S03) Based on the individual dispatching capacity modeling of the constant temperature control load, aggregate and model different constant temperature control loads in the same area to form an aggregated constant temperature control load dispatching model to determine the overall dispatching capacity of the constant temperature control load;

[0053] S04) Based on the optimal power flow model, the aggregate constant temperature control load dispatching model is com...

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Abstract

The invention discloses an ultra-high-voltage direct-current fault scheduling method based on an aggregated constant-temperature control load, and belongs to the field of electric power system emergency circumstance scheduling. The method includes the steps: building an ultra-high-voltage transmission power reliability model based on ultra-high-voltage element fault probability; performing constant-temperature control load individual scheduling capacity modeling based on electric thermal characteristics; performing aggregation modeling on different constant-temperature control loads in the same area based on constant-temperature control load individual scheduling capacity modeling to determine total constant-temperature control load scheduling capacity; combining an aggregated constant-temperature control load scheduling model and a conventional unit scheduling model based on an optimal power flow module, acquiring an optimal scheduling scheme under the ultra-high-voltage direct-current fault scheduling condition, and assessing the scheduling participation degree of the constant-temperature control load. According to the method, the scheduling participation degree of the constant-temperature control load is assessed, total scheduling capability of a system is improved, the running reliability of a receiving end network of an ultra-high-voltage direct-current system is effectively improved, and the total scheduling cost of the system can be reduced.

Description

technical field [0001] The invention belongs to the field of power system emergency dispatching, in particular to an UHV DC fault dispatching method based on aggregated constant temperature control load. Background technique [0002] In the traditional power system, the scheduling plan of the unit is formulated by the power grid company. When the system is running in real time, when the system fails, such as a transmission line failure, the power grid company will conduct emergency real-time dispatch to ensure the reliable operation of the system. The current emergency real-time dispatch mainly focuses on the adjustment of the output of the motor unit, while the adjustment of the power consumption on the demand side is relatively rare. At present, my country is actively promoting the reform of the electricity market. In the market environment, users can flexibly change their electricity consumption according to real-time electricity prices or other market information, and ...

Claims

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Application Information

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IPC IPC(8): H02J3/36H02J3/14G06Q10/06G06Q50/06
CPCH02J3/14H02J3/36G06Q10/0631G06Q50/06H02J2310/64H02J2203/20Y04S10/50Y04S50/16Y02E60/60
Inventor 周华朱炳铨项中明徐奇锋徐立中徐丹露丁一高志远曹阳
Owner STATE GRID ZHEJIANG ELECTRIC POWER
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