Method for acquiring indexes of control capacity of regional dispatching side in real time in provincial-regional coordinated voltage control
A control capability and voltage control technology, applied in the direction of AC network voltage adjustment, reactive power compensation, etc., can solve problems such as unreasonable, not considering the action constraints of reactive power equipment, and inaccurate reactive power adjustment capabilities.
A control capability and voltage control technology, applied in the direction of AC network voltage adjustment, reactive power compensation, etc., can solve problems such as unreasonable, not considering the action constraints of reactive power equipment, and inaccurate reactive power adjustment capabilities.
CN101800429AInactive Publication Date: 2010-08-11JIANGSU ELECTRIC POWER CO +1
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[0043]The method for obtaining the control capability index of the land regulation side in real time in the land-saving coordinated voltage control proposed by the present invention is described in detail in conjunction with the embodiments as follows:
[0044] In the method proposed by the present invention, firstly, each transformer of a substation whose provincial coordination boundary is 220kV is defined as a gateway, the high voltage side of the transformer is the provincial power grid, and the medium voltage side of the transformer is connected to the radial regional power grid.
[0045] According to the present invention, the control ability of the ground regulation side is determined by Q NI , Q ND , Q NI st , Q ND st Composed of four indicators, among them, Q NI Indicates the reactive power capacity that can be increased by the current ground regulation radiation grid, Q ND Indicates the reactive capacity that can be reduced by the current ground regulation radi...
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The invention relates to a method for detecting the control capacity of a regional dispatching side in the provincial-regional coordinated voltage control, and belongs to the technical field of power system automatic voltage control. In the method, indexes QNI, QND, QNIst and QNDst for describing reactive control capacity of the regional dispatching side are designed, wherein the QNI refers to reactive capacity capable of being increased by the current regional dispatching radiation power grid; the QND refers to reactive capacity capable of being decreased by the current regional dispatching radiation power grid; the QNIst refers to reactive capacity capable of being increased in a transformer substation where the current regional dispatching gate is positioned; and the QNDst refers to reactive capacity capable of being decreased in a transformer substation where the current regional dispatching gate is positioned. On the basis that whether the weighting coefficient of reactive power equipment i1 is 0, online calculation of the indexes of the reactive voltage control capacity of the regional dispatching side is realized. The method can timely provide basis for calculating a provincial-regional coordinated voltage control strategy so as to ensure normal operation of the provincial-regional coordinated voltage control.
Description
technical field [0001] The invention belongs to the technical field of automatic voltage control of electric power systems, and in particular relates to a method for considering the control capability of the land regulation side in the voltage control of provincial coordination. Background technique [0002] Automatic Voltage Control (AVC, Automatic Voltage Control) system is one of the most important automatic control systems in power systems. my country's interconnected power grid has a large scale, and its operation is managed by a multi-level dispatching organization that is hierarchical and partitioned. Network dispatching, provincial dispatching, and local dispatching are the three representative dispatching levels. The voltage control of the provincial power grid and the regional power grid needs to be coordinated with each other to achieve coordinated reactive power and voltage optimization control, and achieve the purpose of reasonable reactive power exchange betwee...
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Patent Timeline
11 Aug 2010
Publication
CN101800429A
- IPC
- H02J3/16
- CPC
- Y02E40/34; Y02E40/30
- Inventors
- 鲁庭瑞; 孙宏斌