Second, strictly implement the technical measures of power failure, electricity inspection, grounding wire installation, sign hanging and fence installation. It is strictly prohibited to work on power-off equipment without experience and reliable grounding; It is forbidden to stop sending electricity at an appointment; It is strictly forbidden to change safety protection measures and expand the scope of work without authorization. ?
Three, strictly implement the "four measures" and the requirements of hazard identification and risk assessment. It is strictly prohibited to carry out work without work plan, work instruction or standard procedure work card. ?
Four, strictly implement the relevant provisions of the fall safety protection and personal safety protection articles. It is forbidden to lose protection when working high above the ground; It is forbidden to enter the production and operation area without dressing and wearing safety protection articles according to the regulations. ?
Five, strictly implement the provisions of the live working. It is forbidden to carry out live work without a work plan or using an unapproved work plan; It is forbidden to use unqualified instruments for live working; It is forbidden to make an appointment to stop or resume reclosing. ?
Six, strictly implement the induced voltage protection regulations. It is forbidden to work on equipment with induced electricity without reliable grounding. ?
Seven, strictly implement the live cross (wear) stringing construction operation procedures. It is forbidden to cross (cross) live working without crossing frame and safety and reliability measures. ?
Eight, strictly implement the provisions of SF6 electrical equipment work. It is strictly forbidden to enter the SF6 distribution room without ventilation in advance, and carry out emergency repair and routine maintenance on SF6 equipment without anti-virus measures. ?
Nine, strictly implement the fire and explosion safety regulations. It is strictly prohibited to carry out work that violates the management requirements of fire fighting, blasting and high-pressure gas cylinders. Ten, strictly implement the safety regulations. It is forbidden to enter the production and operation area after drinking; Drunk driving and driving without a license are strictly prohibited.
The first line of defense for expanding data: high-speed and accurate removal of relay protection of faulty components and abnormal operation protection of protective equipment, without loss of load and rapid isolation of faults;
The second line of defense: the safety automatic device to ensure the safe operation of the power grid allows a small amount of load to be lost to avoid overload of components and instability of the power grid;
The third line of defense: out-of-step disconnection and frequency and voltage control, and take all necessary measures to avoid power grid collapse.
Simply put, the three lines of defense are: relay protection, overload and load shedding stability control device, and low-frequency and low-voltage out-of-step disconnection device.
N- 1 criterion is adopted for power supply safety of urban distribution network, namely:
(1) When any incoming line or a group of step-down transformers in the high-voltage substation loses power, the power supply to the lower-level distribution network must be guaranteed;
(2) When the overhead lines, cables or a group of step-down transformers in the high-voltage distribution network fail to stop;
A. Under normal circumstances, there will be no power outage except the fault section, and there will be no low voltage and overload that the equipment does not allow;
B. In the case of planned power outage and fault power outage, partial power outage is allowed, but power supply should be restored within the specified time;
(3) When the transformer or power grid fails in the low-voltage power grid, partial power outage is allowed, and the intact section is switched to the adjacent power grid as soon as possible within the specified time to restore power supply.
Baidu Encyclopedia-Central Enterprise Safety Production Ban