An auxiliary frequency regulation method for cluster temperature-controlled loads to participate in grid AGC
A temperature-controlled load and auxiliary frequency modulation technology, applied in AC network voltage adjustment, circuit devices, AC network circuits, etc., can solve problems such as loss of load diversity, lack of frequency modulation resource control strategy, system power oscillation, etc.
Inactive Publication Date: 2020-12-08
NORTH CHINA ELECTRIC POWER UNIV (BAODING) +2
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Problems solved by technology
The existing auxiliary frequency regulation strategy, on the one hand, is prone to the problem of losing the diversity of loads because only a single type of temperature-controlled load is considered, resulting in system power oscillation; on the other hand, there are few studies on the participation of temperature-controlled loads in secondary frequency regulation of interconnected grids , there is no reasonable and effective control strategy for coordinating traditional frequency regulation units and load side frequency regulation resources
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[0070] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0071] The present invention proposes an auxiliary frequency regulation method for cluster temperature-controlled loads to participate in grid AGC, including the following steps:
[0072] Step 1: Considering the grid frequency regulation demand and user-side comfort factors, evaluate t k The time-to-time cluster temperature control load can participate in the frequency regulation capacity interval;
[0073] Step 2: Formulate the coordinated control principle for dynamically allocating traditional frequency modulation units and cluster temperature control load frequency modulation commitments according to the ARR signal division;
[0074] Step 3: Design the power response control model of cluster temperature-controlled loads, use direct control to orderly control the switching status of equipment, and respond to the freq...
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The invention provides an auxiliary frequency modulation method for cluster temperature control loads to participate in power network AGC. The dynamic characteristics of temperature control loads anduser comfort are analyzed to evaluate the adjustable capacity range of cluster temperature control loads; according to the different intervals of Area Regulation Requirement (ARR) signals, the coordinated control principle of dynamically distributing the AGC secondary frequency modulation demand to the conventional generating unit and the temperature control load is formulated, the operation timeof auxiliary frequency modulation of the temperature control loads, the operation depth and specific operation mode are determined so as to make full use of the performance advantage of temperature control load without affecting the comfort of users, reduce the frequency modulation pressure of conventional units, speed up the frequency regulation speed, restrain the power fluctuation of tie line of interconnected power network, and effectively improve the frequency modulation effect of power network.
Description
technical field [0001] The invention belongs to the technical field of automatic power generation control of electric power systems, and in particular relates to an auxiliary frequency regulation method for cluster temperature-controlled loads participating in AGC of a power grid. Background technique [0002] As an important indicator of the safe and stable operation of the power grid, the frequency reflects the active power balance between the system's power generation and load demand. The automatic generation control method is a frequency control method commonly used in power systems at present. With the access of a large number of random and fluctuating renewable energy sources such as wind power and photovoltaics, the traditional frequency modulation method, which only relies on the output of frequency modulation units on the power supply side to balance the active power changes of the system, has great limitations in terms of frequency modulation capacity and response ...
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IPC IPC(8): H02J3/14H02J3/24
CPCH02J3/14H02J3/24H02J2310/14Y02B70/30Y02B70/3225Y04S20/222Y04S20/242
Inventor 许慧赵冬梅殷加玞汪志成
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)