Abstract: Embodiments of this application relate to the field of electronic devices, and disclose a display method and an electronic device. A specific solution is as follows: An electronic device displays a first interface on a display, where the first interface is an interface of a first application in the electronic device; when a second application in the electronic device meets a preset condition, the electronic device displays a first control on the first interface, where the first control includes an identifier of the first application and an identifier of the second application; the electronic device receives a first operation performed by a user on the first control; and in response to the first operation, the electronic device displays a second interface on the display, where the second interface includes the interface of the first application and an interface of the second application.

Abstract: Embodiments of this application relate to the field of electronic devices, and disclose a display method and an electronic device. A specific solution is as follows: An electronic device displays a first interface on a display, where the first interface is an interface of a first application in the electronic device; when a second application in the electronic device meets a preset condition, the electronic device displays a first control on the first interface, where the first control includes an identifier of the first application and an identifier of the second application; the electronic device receives a first operation performed by a user on the first control; and in response to the first operation, the electronic device displays a second interface on the display, where the second interface includes the interface of the first application and an interface of the second application.

Abstract: The invention relates to a grounding fault protection method for a high-voltage capacitor of a direct-current filter. The method comprises the following steps of acquiring a head end voltage u and an unbalanced current iT2 of a direct-current filter, and acquiring a discrete head end voltage and unbalanced current sequence; calculating a virtual capacitance Czd; determining a protection setting value Cset according to the bridge arm capacitance of the high-voltage capacitor, and when the virtual capacitance Czd is larger than the protection setting value Cset, protecting and judging to be an internal fault; otherwise, protecting and judging to be an external fault.

Abstract: The invention relates to a grounding fault protection method for a high-voltage capacitor of a direct-current filter. The method comprises the following steps of acquiring a head end voltage u and an unbalanced current iT2 of a direct-current filter, and acquiring a discrete head end voltage and unbalanced current sequence; calculating a virtual capacitance Czd; determining a protection setting value Cset according to the bridge arm capacitance of the high-voltage capacitor, and when the virtual capacitance Czd is larger than the protection setting value Cset, protecting and judging to be an internal fault; otherwise, protecting and judging to be an external fault.