Source network load cooperative control system and method
A collaborative control, source-network-load technology, applied in power network operating system integration, information technology support systems, AC network voltage adjustment, etc., can solve the problems of extensive control measures, large-scale power outages, equipment outages, etc. Quantity, the effect of reducing the amount of load shedding, reducing the amount of power and load shedding
Active Publication Date: 2021-03-16
NR ELECTRIC CO LTD +1
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Problems solved by technology
The traditional power grid stability control technology directly chooses to cut off the grid-connected line of the unit and the feeder line of the substation after a fault. Neglected economic loss and negative social impact
Method used
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[0022] The technical solutions and beneficial effects of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0023] Such as figure 1 As shown, the source-network-load cooperative control system includes a coordination control central station, a power source control master station, a load control master station, a power source control sub-station, a load control sub-station, various types of control terminals and communication interface devices, among which:
[0024] (1) The coordination control master station is connected to the power control master station and the load control master station to detect grid faults in real time, calculate the control amount according to the operation mode and fault type, and decide whether the control measure is to cut power or load:
[0025] When cutting the power supply, it is assumed that the amount of power to be cut is P Gyq , then directly put P Gyq Forward to the power control master...
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The invention discloses a source network load cooperative control system and method. A cooperative control master station detects a power grid fault, and a to-be-up-regulated power supply quantity, ato-be-cut load quantity or a to-be-cut power supply quantity are decided according to an operation mode and a fault type; a power supply control main station distributes the to-be-up-regulated power supply quantity and the to-be-cut power supply quantity to each power supply control substation; a load control main station distributes the load capacity to be cut to each load control substation; thepower supply control substations distribute the power supply quantity needing to be adjusted and the power supply quantity needing to be cut to each subordinate power supply control terminal; the load control substations distribute the load capacity to be cut to each subordinate load control terminal; and the power supply / load control terminals complete information acquisition, adjustment and removal functions of control objects according to the received data. According to the technical scheme, the adjusting capacity of the power supply is fully utilized, the power switching-off amount and the load switching-off amount after a fault occurs are reduced, meanwhile, a water pumping and storage pump, an energy storage power station and 10kV and 380V interruptible loads of a user are preferentially cut off during load switching-off, and the power supply reliability of a power system is improved.
Description
technical field [0001] The invention belongs to the field of power system automation, and in particular relates to a source-network-load coordinated control system and method in the power system. Background technique [0002] With the rapid development of UHV AC and DC power grids in my country, a large number of new energy sources such as wind power and photovoltaics are connected to the grid, and the scale of long-distance cross-regional power transmission continues to grow. Blocking or jumping of the connection line between large-capacity areas may cause serious safety and stability problems in both the sending and receiving end power grids. The traditional power grid stability control technology directly chooses to cut off the grid-connected line of the unit and the feeder line of the substation after a fault. Neglected economic loss and negative social impact. Therefore, in order to meet the development needs of a harmonious society, the traditional security and stabil...
Claims
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IPC IPC(8): H02J3/46H02J3/14
CPCH02J3/46H02J3/14Y04S20/222
Inventor 李龙龙任祖怡王鹏翔李响周强杨贵王良祝万
Owner NR ELECTRIC CO LTD