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Air conditioner aggregation control method and system and regulation and control device

A control method and air-conditioning technology, applied in heating and ventilation control systems, circuit devices, space heating and ventilation, etc., can solve the problem of reducing the reliability and accuracy, uncertainty and randomness of load aggregation control method demand-side resources Difficulties and other problems, to achieve the effect of reducing the number of users, improving reliability and reducing costs

Inactive Publication Date: 2021-04-09
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In a demand response contract, contracted users often have the right to opt out of a response event or terminate the contract at any time due to personal or environmental factors, and their behavior is easily affected by many factors. In this way, in each demand response event , the user’s response behavior to the adjustment command issued by the load aggregator can be regarded as a random variable, and its uncertainty and randomness make it difficult for demand-side resources to be used as a reliable aggregation resource to provide auxiliary services such as frequency regulation and peak regulation for the power grid.
[0004] The current research on load aggregation for auxiliary services either focuses on achieving faster response to adjustment instructions, or focuses on achieving higher economic benefits, but because the uncertainty of user response behavior itself is not taken into consideration, load aggregation is reduced. Reliability and precision of control methods

Method used

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  • Air conditioner aggregation control method and system and regulation and control device
  • Air conditioner aggregation control method and system and regulation and control device
  • Air conditioner aggregation control method and system and regulation and control device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] An air-conditioning polymerization control method, comprising the following steps:

[0037] S1. Establish a heat transfer model for a single air conditioner, and estimate the actual available adjustment reserve P after the load aggregation of N air conditioners in real time AC ;

[0038] Specifically, the heat transfer model of a single air conditioner is:

[0039]

[0040] The discrete form of this formula is:

[0041]

[0042] Among them, C and R are thermal capacitance and thermal resistance respectively, T in (t) and T out are the indoor and outdoor temperatures, Q is the thermal power of the air conditioner, and s(t) represents the on and off state of the air conditioner. Taking the air conditioner in the cooling mode as an example, the basis for its determination is:

[0043]

[0044] Among them, T max and T min represent the upper and lower bounds of the room temperature, respectively.

[0045] Real-time actual available adjustment reserve P after...

Embodiment 2

[0088] An air-conditioning aggregation control system, including: a load operation monitoring module, a system frequency sensing module, a power grid dispatching center, a load control center module, an air-conditioning local control module, a communication module, etc.

[0089] The load operation monitoring module is used for real-time estimation of the actual available adjustment reserve after the load aggregation of N air conditioners.

[0090] Specifically, the heat transfer model of a single air conditioner is:

[0091]

[0092] The discrete form of this formula is:

[0093]

[0094] Among them, C and R are thermal capacitance and thermal resistance respectively, T in (t) and T out are the indoor and outdoor temperatures, Q is the thermal power of the air conditioner, and s(t) represents the on and off state of the air conditioner. Taking the air conditioner in the cooling mode as an example, the basis for its determination is:

[0095]

[0096] Among them, T ...

Embodiment 3

[0142] A control device includes a processor, and the processor is used to execute a program to implement the method of Embodiment 1 or the system flow of Embodiment 2, thereby improving the reliability of load aggregation, achieving a more ideal frequency modulation effect, and avoiding the blindness of the aggregator Send adjustment instructions to users in a timely manner, reduce the number of users who send instructions and the number of users who choose to quit the response, thereby reducing the cost of load aggregators and the fatigue of users due to frequent acceptance of adjustment instructions.

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Abstract

The invention discloses an air conditioner aggregation control method and system and a regulation and control device, and belongs to the field of power system demand response load aggregation control. According to a load aggregation control target and based on the historical feedback of a user in response to a regulation instruction, the high probability estimation of receiving a regulation instruction, the small response behavior variance and the small number of historical times nt,i of sent instruction in historical feedback are adopted as reference, the sorting index values vt,i of users are set, and m users are sequentially selected to send adjusting instructions from large to small according to the sorting index values vt,i until satisfying the formula shown as the specification, and if a formula shown as the specification is satisfied, m is equal to n, P1,..., Pn represent the air conditioner power of the users respectively, and n is the total number of the users. According to the invention, a more ideal secondary frequency modulation effect is realized, the blind sending of adjustment instructions to users is avoided, and the number of users sending instructions and the number of users selecting to quit the response are reduced, so that the cost of a load aggregator and the fatigue of the users due to frequent receiving of the adjustment instructions are reduced.

Description

technical field [0001] The invention belongs to the field of demand response load aggregation control of electric power system, and more specifically relates to an air conditioning aggregation control method, system and control device. Background technique [0002] With the large-scale access of renewable energy such as photovoltaics and wind power, its intermittency and volatility have brought great challenges to the stable operation of the power grid, increasing the demand for flexible resources in the power system. At the same time, due to the gradual replacement of a large number of traditional generator sets by new energy sources, it has become very difficult to maintain real-time power balance and frequency stability of the system by only relying on power supply side resources to track load changes in the traditional mode. With the rapid development of advanced measurement infrastructure and information and communication technology, demand-side resources have great adv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/14H02J13/00F24F11/46F24F11/64F24F11/88
CPCH02J3/14H02J13/00001H02J13/00036F24F11/46F24F11/64F24F11/88H02J2310/14H02J2310/60Y04S20/244Y04S20/242
Inventor 胡秦然陈心怡赵原张玮椿汤景然全相军窦晓波吴在军
Owner SOUTHEAST UNIV
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