Network load dispatching instruction response method and network load dispatching instruction response system

Abstract

The embodiment of the invention discloses a network load dispatching instruction response method and a network load dispatching instruction response system. The network load dispatching instruction response method is applied to adjustable load of a load side of a power system, wherein the adjustable load is connected with an energy storage system in parallel. The method comprises the following steps: receiving a first network load dispatching instruction sent by a network dispatching system, wherein the first network load dispatching instruction carries a first expected power value; obtaining a first operation state of the adjustable load; determining the adjustable load dispatching instruction of required response of the adjustable load according to the first expected power value and the first operation state, thereby determining an energy storage system dispatching instruction of required response of the energy storage module; controlling the adjustable load dispatching instruction of the self-response of the adjustable load; sending the energy storage system dispatching instruction to the energy storage system. According to the scheme adopted by the invention, stable operation of the power system can be effectively guaranteed by regulating the power of the load side.

Description

technical field [0001] The invention relates to the field of power system stability and control, in particular to a method and system for responding to a power grid load scheduling command. Background technique [0002] In order to ensure the stable operation of the power system, theoretically, the output power of the power generation side of the power system or the load power of the adjustable load on the load side can be properly adjusted according to the actual situation. However, since the adjustable load on the load side is rigidly constrained by the demand for electricity, the adjustable load cannot quickly and accurately respond to the grid load dispatching instructions for adjusting the load power. Therefore, it is usually guaranteed by adjusting the output power of the generator side. stable operation of the power system. [0003] Although in theory there are concepts such as three-time frequency regulation or load response, the load side responds to grid load disp...

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Problems solved by technology

However, since the adjustable load on the load side is rigidly constrained by the demand for electricity, the adjustable load cannot quickly and accurately respond to the grid load dispatching command for adjusting the load power. Therefore, it is usually guaranteed by adjusting the output power of the generator side Stable operation of power system

[0003] Although in theory there are concepts such as three-time frequency regulation or load response, the load side responds to the grid load dispatching command, but, on the one hand, due to the adjustable range, adjustable rate and adjustable accuracy of the load power of the adjustable load, it is limited by the load worker. Due to the constraints of the environment, it is unable to meet the requirements of the power grid load dispatching instructions on the regulation performance; on the other hand, the regulation of the load power will directly affect the normal production and daily electricity demand, resulting in fluctuations in the production process, affecting product quality and production capacity

For example, the response of most adjustable loads to grid load dispatching instructions is stepwise and discontinuous; at the same time, the adjustable range and adjustable rate of adjustable loads are limited by the production process and production load, and different production conditions The adjustable range and adjustable rate fluctuate greatly, therefore, cannot provide fast round-trip adjustment capability

For another example, when adjusting the load power of an adjustable load, it is necessary to ensure that the production process parameters are within the allowable range to avoid the impact of adjusting the load power on the normal production process. Therefore, the actual load power adjustment amount is different from the set value. There is a large deviation in the adjustment amount of load power, and it fluctuates with the actual working conditions and environmental factors in the production process. The adjustment accuracy of load power often cannot meet the needs of power grid dispatching

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