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A network-constrained power grid reserve capacity deduction calculation method and related devices
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Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A reserve capacity and network constraint technology, applied in the direction of circuit devices, AC network circuits, electrical components, etc., can solve the problems of not being able to apply power grid reserve adjustment optimization, reserve capacity reduction quantification, and inability to form descriptions, etc.
Active Publication Date: 2021-06-25
GUANGDONG POWER GRID CO LTD +1
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[0003] This application provides a network-constrained power grid reserve capacity deduction calculation method and related devices, which are used to solve the problem of quantifying the system's reserve capacity deduction in the existing research on reserve capacity under network constraints, and cannot form a more scientific However, the accurate description leads to technical problems that cannot be well applied to the actual power grid backup regulation optimization process
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Embodiment 1
[0042] For ease of understanding, see figure 1 , Embodiment 1 of a network-constrained power grid reserve capacity deduction calculation method provided by the present application, including:
[0043] Step 101, arrange all the units in ascending order according to the sensitivity.
[0044] It should be noted that all units in the plant have sensitivity coefficients, so all units can be arranged in ascending order of sensitivity, so that the unit selected first and involved in the calculation is the unit with the least sensitivity.
[0045] Step 102, calculating the power flow value of the network section of each unit under the first maximum adjustable output.
[0046] Step 103, sequentially comparing the power flow value of the network section with the threshold value, and if the power flow value is smaller than the threshold value, sequentially accumulating the power flow value.
[0047] Step 104 , when the accumulated total power flow value is greater than the threshold va...
Embodiment 2
[0053] For ease of understanding, see figure 2 , the embodiment of the present application provides a second embodiment of the network-constrained power grid reserve capacity deduction calculation method, including:
[0054] Step 201. Calculate the first maximum adjustable output of each unit in the plant.
[0055] It should be noted that the adjustable output refers to the remaining power generation output value of the unit, that is, the power generation margin, which is an important indicator to measure the remaining power generation capacity of the grid-connected unit. It is convenient to calculate and calculate the maximum adjustable output of all units in the plant. Subsequent calculations.
[0056] Step 202 , correcting the first maximum adjustable output of each unit according to unit failure, heat supply limitation of cogeneration unit and water head limitation of hydropower unit.
[0057] It should be noted that the maximum adjustable output is generally obtained b...
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Abstract
This application discloses a network-constrained power grid reserve capacity deduction calculation method and related devices. The method includes: sorting all units in ascending order according to sensitivity; calculating the power flow value of each unit's network section under the first maximum adjustable output ;Compare the power flow value of the network section with the threshold value in turn, if the power flow value is less than the threshold value, then accumulate the power flow value in turn; when the accumulated total power flow value is greater than the threshold value, stop the power flow value accumulation, and record the last unit participating in the power flow value accumulation The position of the restricted unit is obtained; the second maximum adjustable output of each restricted unit is compared with the original output of the restricted unit, and the sum is added to obtain the restricted capacity of the network section. This application solves the problem that it is difficult to quantify the reserve capacity reduction of the system in the existing research on reserve capacity under network constraints, and it is impossible to form a more scientific and accurate description, which leads to the fact that it cannot be well applied to the actual power grid reserve regulation optimization process technical issues in .
Description
technical field [0001] The present application relates to the technical field of power grid reserve capacity, and in particular to a network-constrained power grid reserve capacity deduction calculation method and a related device. Background technique [0002] With the gradual improvement of power grid construction, there are more and more control principles for the power system, and the control requirements are getting higher and higher, which leads to more and more restrictions on the power system, and the operation and backup requirements of the power system are limited by various The contradiction between the deduction of reserve capacity caused by various factors is more and more obvious. Among them, the impact of network constraints on the reserve capacity of the power system is particularly prominent. The reserve adjustment ability is extremely important, but it is difficult to quantify the reserve capacity reduction of the system in the existing research on reserve ...
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