A control method and control device for electric energy management
A control method and electric energy technology, which are applied to harmonic reduction devices and AC networks to reduce harmonics/ripples, etc., can solve problems such as unreasonable distribution, reduce the amount of calculation and control of communication data, and reduce the complexity of the algorithm. , the effect of improving efficiency
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Embodiment 1
[0056] Please see figure 1 , figure 1 A flow chart of a power management control method provided in the embodiment of the present application, the method is applied to a system composed of APF (Active Power Filter, active power filter) and SVG (Static Var Generator, static var generator) A master in a master-slave control system, the master-slave control system includes a master, a plurality of slaves (including APF and SVG) connected in parallel to the master, and a current transformer connected in series to the master. Based on the master-slave control system, through the calculation of the digital signal processor (DSP) in the master, it is transmitted to the slave in the form of digital communication, so as to realize the control of the slave and avoid the complicated wiring operation caused by the series connection of current transformers , which eliminates calculation errors and circulation problems between multiple devices in the current sharing compensation method. I...
Embodiment 2
[0100] The embodiment of the present application also provides a power management control method, which is applied to the DSP of the active filtering device, and mainly includes the following steps:
[0101] On the host side of the master-slave control system:
[0102] Step S10: The DSP of the host computer receives the sampling current, calculates the harmonic content and reactive power content in the sampling current, and determines the command current of the target compensation amount;
[0103] Step S11: call the state allocation flow function again to determine the current working state of the slave device, the current working state includes running state, stop state and fault state;
[0104] Step S12: call the data allocation function in the DSP, allocate the number, capacity and output mode of the slave machine operation, the output mode includes harmonics and reactive power;
[0105] Step S13: Send the target command data packet to the slave.
[0106] On the slave sid...
Embodiment 3
[0111] Such as Figure 8 As shown, it is a structural block diagram of a power management control device provided in the embodiment of the present application. The device includes a master-slave control system, and the master-slave control system includes: a master, multiple slaves connected in parallel with the master, and The host is connected in series with the current transformers. The device also includes: a CPLD hardware logic circuit and a data command channel and a control command channel connected to it through a parallel data interface.
[0112] The DSP of the device host includes:
[0113] The sampling current receiving module 100 is configured to receive the sampling current obtained by sampling the current transformer;
[0114] A compensation requirement calculation module 200, configured to calculate the compensation requirement according to the sampling current;
[0115] A target instruction acquisition module 300, configured to acquire a target instruction a...
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