Distributed economic dispatching method for power system under aperiodic Dos attack
A power system and economic dispatching technology, applied in the direction of single-network parallel feeding arrangement, etc., can solve the problems of high dependence on distributed economic dispatching execution, increased information network attacks, and lack of monitoring centers for distributed control strategies, achieving high efficiency, The effect of low communication cost and high flexibility
Pending Publication Date: 2022-04-12
NANJING UNIV OF POSTS & TELECOMM
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[0003]
However, the distributed control strategy also has certain disadvantages, and the execution of distributed economic dispatch is highly dependent on the information network connecting each generating unit
Due to the openness and fragility of the information network, and the lack of a monitoring center in the distributed control strategy to monitor the activities of all generating units in the network, the possibility of the information network being attacked will increase significantly
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[0039] Embodiments of the present invention will be disclosed in the following diagrams. For the sake of clarity, many practical details will be described together in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the invention, these practical details are not necessary.
[0040] The present invention takes a system composed of 6 generator sets as an example, and its communication network topology relationship is as follows figure 1 As shown, the specific implementation steps are as follows Figure 6 Shown:
[0041] (1) Given system parameters, given the number of generator sets in the power system n=6, the total power demand P D =1800MW, normal constant ε=0.0008, coefficient η=0.5, period T=10, power deviation tolerance value θ=10MW, coupling strength c=2, m=4.
[0042] (2) Suppose the cost function of the i-th generating set is:
[0043]
[0044] Amon...
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The invention relates to a distributed economic dispatching method for a power system under an aperiodic Dos attack. The method comprises the following steps: giving system parameters; setting a communication connection coefficient; assigning a value to the increment cost of the leader generator set and calculating the increment cost of the following generator set; updating the incremental cost of each following generator set by using an incremental cost safety consistency algorithm; calculating the output power of the leading generator set and the following generator set; calculating the power of supply-demand deviation; judging whether the power of the supply and demand deviation meets a given power deviation tolerance value or not; and calculating the optimal output power of the leading generator set and the following generator set. According to the method, the influence of the Dos network attack is considered, when the power system is subjected to the network attack, the attacked generator set does not need to be isolated, the effectiveness of economic dispatching under the information network attack can be ensured only by adopting the incremental cost security consistency algorithm, and the economic and stable operation of the power system under the information network attack is realized.
Description
technical field [0001] The invention relates to the field of economic dispatching of electric power systems, in particular to a method for distributed economic dispatching of electric power systems under non-periodic Dos attacks. Background technique [0002] Economic dispatch is a basic problem in the power system, and its core is to minimize the total cost of power generation on the basis of satisfying the balance between supply and demand. With the rapid development of society, the topological structure of the power system is becoming larger and more complex. The main reason for the defects of the centralized control strategy is that when the control center fails, the entire power system will be paralyzed. In contrast, the distributed control strategy does not require a centralized control center, but only requires communication between adjacent generating units, so a distributed economic dispatch scheme emerges as the times require. [0003] However, the distributed co...
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Inventor 翁盛煊孙振峰岳东吴凯
Owner NANJING UNIV OF POSTS & TELECOMM