Automatic low-frequency low-voltage load-reducing centralization optimization control system

A low-frequency, low-voltage, optimized control technology, applied in information technology support systems, power network operating system integration, AC network voltage adjustment, etc., can solve problems such as system crashes, increased frequency recovery time, single action parameters, etc., to reduce Effects of over-cut or under-cut, improved stability, and improved economy

Inactive Publication Date: 2009-05-27
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

The time for frequency recovery is increased, which is not conducive to the rapid recovery of frequency
[0008] 3. The action parameter is single, and only the frequency f is considered. According to the actual operating experience, when the frequency deviation is the same, when the frequency change rate, node voltage value, and online load characteristics are different, the dynamic frequency of the syst

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  • Automatic low-frequency low-voltage load-reducing centralization optimization control system
  • Automatic low-frequency low-voltage load-reducing centralization optimization control system

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Embodiment Construction

[0022] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0023] Refer to attached figure 1 , the power system automatic low-frequency low-voltage low-voltage load shedding centralized optimization control system involved in this embodiment includes: a data acquisition module, an offline calculation module, and an online control module, wherein:

[0024] The data acquisition module collects EMS data through the data server, and collects the current, voltage, frequency, load and other operating information of the system through the data acquisition device installed at the PMU, UFLS device, and important components, as well as...

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Abstract

The invention relates to an automatic low-frequency low-voltage load-reduction centralized optimization control system for power systems in the technical field of industrial control. The control system comprises a data acquisition module, an off-line computation module and an on-line control module, wherein the data acquisition module acquires EMS data through a data server, and acquires the operation information of a system through data acquisition devices arranged on a PMU, a UFLS device and an important element, as well as the operation condition of every element; the off-line computation module computes voltage stability boundary of nodes, as well as load frequency response functions; and the on-line control module computes load shedding amount, determines the order of UFLS movements, transmits control instructions to the UFLS device, and determines a next control instruction according to the information fed back by the UFLS. The control system is based on the parameters of the real-time changes of the power systems, and determines the movement order and load shedding amount of the UFLS device of a whole network, thereby speeding up the frequency recovery of the systems and improving the operation stability of the systems.

Description

technical field [0001] The invention relates to a power system optimization control system in the technical field of industrial control, in particular to an automatic low-frequency and low-voltage load reduction centralized optimization control system. Background technique [0002] When there is a lack of active power in the power system, the system frequency will drop due to the imbalance between supply and demand. If the backup cannot restore the system frequency quickly, the system may collapse. The frequency automatic load shedding device is the third line of defense for the safe operation of the power grid. Its main function is to cut off a part of the load quickly according to the predetermined control strategy before the system frequency collapses when a serious abnormal accident occurs and a serious active power shortage occurs. , in order to "sacrifice local security overall" to ensure the safe operation of the system and uninterrupted power supply to important user...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02J3/14
CPCY02B70/3225Y04S20/222
Inventor 贾燕冰严正李禹鹏朱清清李红梅
Owner SHANGHAI JIAO TONG UNIV
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