A 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: 2022-07-22
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 with reference to the accompanying drawings.
[0023] like figure 1 As shown in the figure, the source-network-load cooperative control system includes a coordinated control master 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, wherein:
[0024] (1) The coordinated control terminal is connected to the main power supply control station and the main load control station, detects the power grid fault in real time, calculates the control quantity according to the operation mode and fault type, and decides whether the control measure is to cut off the power supply or the load:
[0025] When cutting off the power, it is assumed that the amount of power to be cut is P Gyq , then directly convert P Gyq Forw...
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The invention discloses a source-grid-load coordinated control system and method, which coordinately controls the main station to detect power grid faults, and decides that the amount of power supply needs to be increased, the amount of load to be cut or the amount of power to be cut according to the operation mode and the type of fault; The amount of power to be increased and the amount of power to be cut are distributed to each power control substation; the main load control station allocates the amount of load to be cut to each of the load control substations; the power control substation distributes the amount of power to be adjusted and the amount of power to be cut to Each subordinate power control terminal; the load control sub-station distributes the amount of load to be cut to each subordinate load control terminal; the power / load control terminal completes the information collection, adjustment and cutting functions of the control object according to the received data. This technical solution makes full use of the adjustment capability of the power supply to reduce the amount of power supply and load shedding after a fault. At the same time, during load shedding, the pumping-storage water pump, energy storage power station and user 10kV and 380V interruptible loads are preferentially removed to improve the power system. power supply reliability.
Description
technical field [0001] The invention belongs to the field of power system automation, in particular to a source-grid-load coordinated control system and method in a power system. Background technique [0002] With the rapid development of my country's UHV AC and DC power grids, 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, especially during the transition period of "strong DC and weak AC" power grids, once the UHV DC bipolar If the tie line between large-capacity areas is blocked or disconnected, serious security and stability problems may occur in both the sending and receiving power grids. The traditional power grid stability control technology directly chooses to cut off the grid-connected line of the unit and the feeder of the substation after a fault. The control measures are relatively extensive and easily lead to large overcuts, res...
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